Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
22
datasets available to search
ShareScore release 0.9.0
Dataset results
22 results for “Western Interior Seaway”
Figure 7 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 7. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Length in mm. A. Apateodus crenellatus? Schwarzhans and Stringer (2020b), DMNH 2021-09-17, 1.78 mm. B. Palaeogadus? belli sp. nov., DMNH 2021-09-18, 1.25 mm (paratype). C. Palaeogadus? belli sp. nov., DMNH 2021-09-19, 1.78 mm (paratype). D. Palaeogadus? belli sp. nov., 2021-09-20, 2.21 mm (paratype). E. Palaeogadus? belli sp. nov., DMNH 2021-09-21, 2.34 mm (paratype). F. Palaeogadus? belli sp. nov., DMNH 2021-09-22, 3.13 mm (holotype). G. Palaeogadus? belli sp. nov., DMNH 2021-09-22, 3.13 mm (holotype, outer view). H Palaeogadus? belli sp. nov., DMNH 2021-09-22, 3.13 mm (holotype, dorsal view).
Figure 5 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 5. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Length in mm. A. Elops sp., DMNH 2021-09-01, 1.89 mm. B. Albuliformes indeterminate, DMNH 2021-09-02, 1.42 mm. C. Elopothrissus sp. DMNH 2021-09-03, 1.83 mm. D. Genartina sp. DMNH 2021-09-04, 0.85 mm. E. Osmeroides sp. DMNH 2021-09-05, 3.85 mm. F. Anguilla? chickasawae Schwarzhans and Stringer (2020b), DMNH 2021-09-6, 1.90 mm. G. Echiophis aff. E. semisphaeroides Schwarzhans (2003), DMNH 2021-09-07, 3.25 mm. H. Muraenanguilla? sp. DMNH 2021-09-08, 2.18 mm.
Figure 8 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 8. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Lapilli are macular views. Length in mm. A. Palaeogadus cf. P. weltoni Schwarzhans and Stringer (2020a), DMNH 2021-09- 23, 1.46 mm. B. Gadiformes indeterminate, DMNH 2021-09-24, 1.56 mm. C. Tippaha mythica Schwarzhans and Stringer (2020a), DMNH 2021-09-25, 3.85 mm. D. Eutawichthys maastrichtiensis Nolf and Stringer (1996), DMNH 2021-09-26, 3.93 mm. E. Eutawichthys zideki Nolf and Stringer (1996), DMNH 2021-09-27, 1.42 mm. F. Eutawichthys cf. E. stringeri Schwarzhans, Huddleston, and Takeuchi (2018b), DMNH 2021-09-28, 1.85 mm. G. Ampheristus cf. A. americanus Schwarzhans and Stringer (2020a), DMNH 2021-09-29, 1.58 mm. H. Protobythities brzobohatyi Schwarzhans (2010), DMNH 2021-09-30, 1.68 mm. I. Lapillus type 1, DMNH 2021-09-31, 2.98 mm.
Figure 2 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 2. Regional map of otolith-bearing Cretaceous sites mentioned in the text. Dashed line shows approximate shoreline during the late Maastrichtian (Roberts and Kirschaum 1995, Dastas et al. 2014, Stringer and Sloan 2018).
Figure 4 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 4. Geologic section of borings B-5, B-6, B-8, B-9, and B-10 at the Cabot site, Lonoke County, Arkansas, USA. Black shapes designate the approximate level at which otoliths were recovered (bgl m=below ground level in meters). The shape is indicative of the number of otoliths recovered at that level: circle=less than 10 specimens; triangle=11–100 specimens; rectangle=101–500 specimens; and star=greater than 500 specimens.
Figure 1 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 1. Stratigraphy of the Arkadelphia Formation and other formations discussed in the text based primarily on McFarland (2004). The gray-shaded area represents an unconformity.
Figure 9 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 9. Maastrichtian otolith localities in North America and otolith-based faunal communities (bioprovinces) based on Schwarzhans and Stringer (2020a). The Western Interior Seaway community is outlined in green, and the localities are shown in green circles. The Appalachian community is outlined in red, and the localities are shown in red circles. The number in the circle is the number of species known from the localities. The white star is the Arkadelphia Formation site at Cabot, Arkansas, and the focus of this study. The base paleogeographic map was modified from Blakey (2014) and Scotese (2014).
Figure 6 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 6. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Length in mm. A. Kokenichthys navis Schwarzhans and Stringer (2020b), DMNH 2021-09-9, 4.10 mm. B. Clupeiform? indeterminate DMNH 2021-09-10, 1.42 mm. C. Arius subtilis Schwarzhans and Bratishko (2011), DMNH 2021-09-11, 4.61 mm. D. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-13, 2.49 mm. E. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-14, 3.06 mm. F. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-15, 3.99 mm. G. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-16, 7.98 mm. H. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-12, 19.36 mm.
Table 1 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
<p><b>Table 1.</b> Taxa from the Arkadelphia Formation (Cabot locality, Arkansas, USA) with number of specimens, percentage of total, and occurrences in the Cretaceous and Paleocene of North America. Letters in third and fourth columns refer to the following references: <b>A</b> =Stringer et al. (2020); <b>B</b> = Schwarzhans and Stringer (2020a); <b>C</b> = Schwarzhans et al. (2018b); <b>D</b> = Hoganson et al. (2019); <b>E</b> =Stringer et al. (2018); <b>F</b> = Schwarzhans (1985); <b>G</b> = Frizzell (1965a). References are not inclusive but provide evidence of the range of the species in North America. <b>Order=FORMES, Family=idae</b></p><table><tbody><tr><th><b>Taxa</b></th><th><b>No. of specimens</b></th><th><b>% of total</b></th><th><b>Known N. Am Cretaceous</b></th><th><b>Known N. Am Paleocene</b></th></tr><tr><th><b>ELOPIFORMES Elopidae</b></th></tr></tbody><tbody><tr><th><i>Elops</i> sp.</th><td>1</td><td>0.05</td><td>C</td><td>F</td></tr><tr><th><b>ALBULIFORMES</b></th></tr><tr><th><b>Albulidae</b></th></tr><tr><th>Albuliformes indeterminate</th><td>4</td><td>0.19</td><td>E</td><td>B</td></tr><tr><th><i>Elopothrissus</i> sp.</th><td>1</td><td>0.05</td><td>A</td><td>B</td></tr><tr><th><b>ORDER INDETERMINATE Family indeterminate</b></th></tr><tr><th><i>Genartina</i> sp.</th><td>1</td><td>0.05</td><td>B</td><td>B</td></tr><tr><th><b>Osmeroididae</b></th></tr><tr><th><i>Osmeroides</i> sp.</th><td>3</td><td>0.14</td><td>A</td><td>G</td></tr><tr><th><b>ANGUILLIFORMES</b></th></tr><tr><th><b>Anguillidae</b></th></tr><tr><th><i>Anguilla</i>? <i>chickasawae</i></th><td>6</td><td>0.28</td><td>A</td><td>B</td></tr><tr><th><b>Ophichthidae</b></th></tr><tr><th><i>Echiophis</i> aff. <i>E. semisphaeroides</i></th><td>11</td><td>0.52</td><td>B</td><td>B</td></tr><tr><th><b>Family Indeterminate</b></th></tr><tr><th><i>Muraenanguilla</i>? sp.</th><td>2</td><td>0.09</td><td>A</td><td>B</td></tr><tr><th><b>OSTEOGLOSSIFORMES</b></th></tr><tr><th><b>Family indeterminate</b></th></tr><tr><th><i>Kokenichthys navis</i></th><td>2</td><td>0.09</td><td>A</td><td>No</td></tr><tr><th><b>CLUPEIFORMES</b></th></tr><tr><th><b>Family indeterminate</b></th></tr><tr><th>Clupeiform? indeterminate</th><td>1</td><td>0.05</td><td>—</td><td>—</td></tr><tr><th><b>SILURIFORMES</b></th></tr><tr><th><b>Ariidae</b></th></tr><tr><th><i>Arius</i>? <i>subtilis</i></th><td>1</td><td>0.05</td><td>A</td><td>B</td></tr><tr><th><b>Family indeterminate</b></th></tr><tr><th><i>Vorhisia vulpes</i></th><td>1,537</td><td>72.88</td><td>A</td><td>No</td></tr><tr><th><b>AULOPIFORMES</b></th></tr><tr><th><b>Ichthyotringidae</b></th></tr><tr><th><i>Apateodus crenellatus</i>?</th><td>3</td><td>0.14</td><td>A</td><td>No</td></tr><tr><th><b>GADIFORMES</b></th></tr><tr><th><b>Merlucciidae</b></th></tr><tr><th><i>Palaeogadus</i>? <i>belli</i> sp. nov.</th><td>148</td><td>7.02</td><td>No</td><td>No</td></tr><tr><th><i>Palaeogadus</i> cf. <i>P. weltoni</i></th><td>1</td><td>0.05</td><td>B</td><td>No</td></tr><tr><th><b>GADIFORMES</b></th></tr><tr><th><b>Family indeterminate</b></th></tr><tr><th>Gadiformes indeterminate</th><td>11</td><td>0.52</td><td>—</td><td>—</td></tr><tr><th><b>HOLOCENTRIFORMES</b></th></tr><tr><th><b>Family indeterminate</b></th></tr><tr><th><i>Tippaha mythica</i></th><td>8</td><td>0.38</td><td>A</td><td>No</td></tr><tr><th><b>BERYCIFORMES</b></th></tr><tr><th><b>Family indeterminate</b></th></tr><tr><th><i>Eutawichthys maastrichtiensis</i></th><td>21</td><td>1.00</td><td>A</td><td>No</td></tr><tr><th><i>Eutawichthys zideki</i></th><td>287</td><td>13.61</td><td>A</td><td>No</td></tr><tr><th><i>Eutawichthys</i> cf. <i>E. stringeri</i></th><td>48</td><td>2.28</td><td>C</td><td>No</td></tr><tr><th><b>OPHIDIIFORMES</b></th></tr><tr><th><b>Ophidiidae</b></th></tr><tr><th><i>Ampheristus</i> cf. <i>A. americanus</i></th><td>6</td><td>0.28</td><td>B</td><td>B</td></tr><tr><th><b>Bythitidae</b></th></tr><tr><th><i>Protobythites brzobohatyi</i></th><td>4</td><td>0.19</td><td>B</td><td>No</td></tr><tr><th><b>ORDER UNKNOWN</b></th></tr><tr><th><b>Family unknown</b></th></tr><tr><th>Lapillus type 1</th><td>1</td><td>0.05</td><td>A</td><td>No</td></tr><tr><th><b>Family unknown</b></th></tr><tr><th>Unknown sagitta</th><td>1</td><td>0.05</td><td>n/a</td><td>n/a</td></tr><tr><th><b>Total</b></th><td>2,109</td><td>~100</td><td></td><td></td></tr></tbody></table>
Table 3 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
<p><b>Table 3.</b> Percentage similarity measurements for the otolith assemblages from the Arkadelphia Formation (Cabot locality, Arkansas, USA), Fox Hills Formation (NDGS 5597, North Dakota, USA), Kemp Clay (South Sulphur River locality, Texas, USA), Ripley Formation (Blue Springs locality, Mississippi, USA, and Severn Formation (five sites, Maryland, USA). Data for calculations were obtained from this study (Table 1) for the Arkadelphia Formation (Cabot locality), from Hoganson et al. (2019) for the Fox Hills Formation (NDGS 5597 locality), from Schwarzhans and Stringer (2020a) for the Kemp Clay (South Sulphur River locality), from Stringer et al. (2020, table 2) for the Ripley Formation (Blue Springs locality; bulk samples only), and from Stringer and Schwarzhans (2021; table 3) for the Severn Formation (four sites).</p><table><tbody><tr><th><b>Localities compared</b></th><th><b>Percent</b> <b>similarity</b></th></tr></tbody><tbody><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Fox Hills Formation (NDGS 5597, North Dakota)</th><td>30.32%</td></tr><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Kemp Clay (South Sulphur River locality Texas)</th><td>35.73 %</td></tr><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Ripley Formation (Blue Springs locality, Mississippi)</th><td>5.46%</td></tr><tr><th>Arkadelphia Formation (Cabot locality, Arkansas) and Severn Formation (four sites in Maryland)</th><td>57.68%</td></tr><tr><th>Kemp Clay (South Sulphur River locality, Texas) and Ripley Formation (Blue Springs locality, Mississippi)</th><td>3.33%</td></tr></tbody></table>
Analytical and supplemental data from: Ammonites as paleothermometers: Isotopically reconstructed temperatures of the Western Interior Seaway track global records
Open the record for dataset details and reuse information.
Evolutionary stasis, ecophenotypy, and environmental controls on ammonite morphology in the Late Cretaceous (Maastrichtian) Western Interior Seaway, USA
<p class="Abstract">We test for the presence of evolutionary stasis in a species of Late Cretaceous ammonoid cephalopod, <i>Hoploscaphites nicolletii</i>, from the North American Western Interior Seaway. A comprehensive dataset of morphological traits was compiled across the entire spatial and temporal range of this species. These were analyzed in conjunction with sedimentologically and geochemically derived palaeoenvironmental conditions hypothesized to apply selective pressures. All changes in shell shape were observed to be ephemeral and reversable, that is, no unidirectional trend could be observed in any of the morphological traits analyzed. Correlations between palaeoenvironmental conditions and morphological traits suggests ecophenotypic processes were at play, however, either environmental changes were too minor and/or provided no isolating mechanism to drive speciation. These data support mechanisms of stasis such as homogenizing gene flow or stabilising selection under a fluctuating optimum (likely reflecting spatiotemporally heterogeneous palaeoenvironmental conditions). Finally, changes in shell size were not significantly associated with changes in shell-specific δ<sup>18</sup>O, despite a correlation between shell size and δ<sup>18</sup>O averaged across horizons. This suggests a mismatch in scales of geochemical sampling that supports caution when making broad interpretations based on averaged geochemical data.</p>
Figure 3 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 3. Location of the study area near Cabot, Lonoke County, Arkansas, USA.
Table 2 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
<p><b>Table 2.</b> Comparison of the otoliths (taxa and percentage of total) of the Fox Hills Formation (NDGS 5597 locality, near Burnstad, North Dakota, USA), Kemp Clay (South Sulphur River, near Commerce, Texas, USA), and Ripley Formation (near Blue Springs, Mississippi, USA) based on bulk samples. <b>1</b> includes specimens identified as <i>Pterothrissus</i> cf. <i>P. conchaeformis,</i> <b>2</b> includes specimens identified as <i>Ampheristus</i> cf. <i>A. americanus</i>. Order=FORMES, Family=idae</p><table><tbody><tr><th><b>Taxa in Fox Hill., Kemp Clay, and</b></th><th><b>Fox Hills Fm., North Dakota</b></th><th><b>Kemp Clay, Texas</b></th><th><b>Ripley Fm., Mississippi</b></th></tr></tbody><tbody><tr><th><b>Ripley formation sites</b></th><td><b>No. of otoliths</b></td><td><b>% of total</b></td><td><b>No. of otoliths</b></td><td><b>% of total</b></td><td><b>No. of otoliths</b></td><td><b>% of total</b></td></tr><tr><th><b>Megalopidae</b></th></tr><tr><th><i>Megalops</i>? <i>nolfi</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>3</td><td>0.40</td></tr><tr><th><b>Albulidae</b></th></tr><tr><th><i>Albula</i> cf. <i>A. bashiana</i></th><td>0</td><td>0</td><td>7</td><td>0.58</td><td>0</td><td>0</td></tr><tr><th><i>Pollerspoeckia</i> sp.</th><td>4</td><td>1.50</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><i>Pterothrissus conchaeformis</i> <b>1</b></th><td>0</td><td>0</td><td>113</td><td>9.33</td><td>6</td><td>0.81</td></tr><tr><th><i>Pterothrissus</i> cf. <i>P. foreyi</i></th><td>0</td><td>0</td><td>2</td><td>0.17</td><td>0</td><td>0</td></tr><tr><th><i>Albula</i> sp.</th><td>0</td><td>0</td><td>0</td><td>0</td><td>7</td><td>0.94</td></tr><tr><th><i>Elopothrissus</i> sp.</th><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>ORDER INDETERMINATE</b></th></tr><tr><th><i>Genartina</i> sp.</th><td>0</td><td>0</td><td>3</td><td>0.25</td><td>0</td><td>0</td></tr><tr><th><b>Osmeroididae</b></th></tr><tr><th><i>Osmeroides mississippiensis</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>14</td><td>1.89</td></tr><tr><th><i>Osmeroides</i> sp.</th><td>0</td><td>0</td><td>0</td><td>0</td><td>4</td><td>0.53</td></tr><tr><th><b>Anguillidae</b></th></tr><tr><th><i>Anguilla chickasawae</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>2</td><td>0.27</td></tr><tr><th><b>Ophichthidae</b></th></tr><tr><th><i>Echiophis</i> aff. <i>E.semispaeroides</i></th><td>0</td><td>0</td><td>2</td><td>0.17</td><td>0</td><td>0</td></tr><tr><th><b>Family Ind. (ANGUILLIFORMES)</b></th></tr><tr><th><i>Muraenanguilla</i> cf. <i>M. unionensis</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>19</td><td>2.56</td></tr><tr><th><b>Heterenchelyidae</b></th></tr><tr><th><i>Pythonichthys arkansasensis</i></th><td>0</td><td>0</td><td>3</td><td>0.25</td><td>0</td><td>0</td></tr><tr><th><b>Congridae</b></th></tr><tr><th><i>Rhynchoconger</i>? <i>piger</i></th><td>0</td><td>0</td><td>38</td><td>3.14</td><td>0</td><td>0</td></tr><tr><th><i>Rhynchoconger brettwoodwardi</i></th><td>0</td><td>0</td><td>25</td><td>2.06</td><td>0</td><td>0</td></tr><tr><th><i>Congrophichthys transterminus</i></th><td>0</td><td>0</td><td>3</td><td>0.25</td><td>0</td><td>0</td></tr><tr><th><b>Family ind. (OSTEOGLOSSIFORMES)</b></th></tr><tr><th><i>Kokenichthys navis</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>7</td><td>0.94</td></tr><tr><th><i>Kokenichthys ripleyensis</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0.13</td></tr><tr><th><b>Family Ind. (CLUPEIFORMES)</b></th></tr><tr><th>Clupeiform indeterminate</th><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>Ariidae</b></th></tr><tr><th><i>Arius</i>? <i>danicus</i></th><td>0</td><td>0</td><td>67</td><td>5.53</td><td>0</td><td>0</td></tr><tr><th><i>Arius</i>? <i>subtilis</i></th><td>0</td><td>0</td><td>195</td><td>16.10</td><td>13</td><td>1.75</td></tr><tr><td><b>No. of otoliths</b></td><td><b>% of total</b></td><td><b>No. of otoliths</b></td><td><b>% of total</b></td><td><b>No. of otoliths</b></td><td><b>% of total</b></td></tr><tr><th><b>Family Ind. (SILURIFORMES)</b></th></tr><tr><th><i>Vorhisia vulpes</i></th><td>78</td><td>29.32</td><td>423</td><td>34.93</td><td>2</td><td>0.27</td></tr><tr><th><b>Ichthyotringidae</b></th></tr><tr><th><i>Apateodus crennelatus</i>?</th><td>0</td><td>0</td><td>0</td><td>0</td><td>42</td><td>5.66</td></tr><tr><th><i>Thrax acutus</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0.13</td></tr><tr><th><i>Ichthyotringa</i>? <i>tavernei</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>4</td><td>0.53</td></tr><tr><th><b>Paraulopidae</b></th></tr><tr><th><i>Paraulopus pseudoperca</i></th><td>0</td><td>0</td><td>4</td><td>0.33</td><td>190</td><td>25.61</td></tr><tr><th><b>Family Ind. (ORDER UNKNOWN)</b></th></tr><tr><th><i>Choctawichthys ceploides</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>2</td><td>0.27</td></tr><tr><th><b>Polymixiidae</b></th></tr><tr><th><i>Cowetaichtys carnevalei</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>3</td><td>0.40</td></tr><tr><th><i>Cowetaichthys alabamae</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>9</td><td>1.21</td></tr><tr><th><b>Merlucciidae</b></th></tr><tr><th><i>Paleogadus weltoni</i></th><td>0</td><td>0</td><td>2</td><td>0.17</td><td>0</td><td>0</td></tr><tr><th><i>Palaeogadus belli</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>Gadidae?</b></th></tr><tr><th><i>Dakotaichthys hogansoni</i></th><td>177</td><td>66.29</td><td>16</td><td>1.32</td><td>0</td><td>0</td></tr><tr><th><b>Family Ind. (GADIFORMES)</b></th></tr><tr><th><i>Archaemacruroides bratishkoi</i></th><td>0</td><td>0</td><td>11</td><td>0.91</td><td>0</td><td>0</td></tr><tr><th><b>GADIFORMES Ind</b>.</th><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>Family Ind. (HOLOCENTRIFORMES)</b></th></tr><tr><th><i>Tippaha mythica</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0.13</td></tr><tr><th><i>Tippaha cavata</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0.13</td></tr><tr><th><b>Trachichthyidae</b></th></tr><tr><th><i>Hoplopteryx oscitans</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>278</td><td>37.47</td></tr><tr><th><i>Hoplopteryx langfordi</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>11</td><td>1.48</td></tr><tr><th><i>Hoplostethus stringeri</i></th><td>0</td><td>0</td><td>52</td><td>4.29</td><td>0</td><td>0</td></tr><tr><th><b>Berycidae</b></th></tr><tr><th><i>Centroberyx apogoniformis</i></th><td>0</td><td>0</td><td>42</td><td>3.47</td><td>0</td><td>0</td></tr><tr><th><b>Family Ind. (BERYCIFORMES)</b></th></tr><tr><th><i>Argyroberyx</i>? <i>dentatus</i></th><td>0</td><td>0</td><td>1</td><td>0.08</td><td>0</td><td>0</td></tr><tr><th><i>Argyroberyx</i>? <i>dockeryi</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>2</td><td>0.27</td></tr><tr><th><b>Ripley formation sites</b></th><td><b>No. of otoliths</b></td><td><b>% of total</b></td><td><b>No. of otoliths</b></td><td><b>% of total</b></td><td><b>No. of otoliths</b></td><td><b>% of total</b></td></tr><tr><th><b>Family Ind. (BERYCIFORMES)</b></th></tr><tr><th><i>Eutawichthys</i> cf. <i>E. choctawae</i></th><td>0</td><td>0</td><td>7</td><td>0.58</td><td>0</td><td>0</td></tr><tr><th><i>Eutawichthys maastrichtiensis</i></th><td>8</td><td>3.00</td><td>2</td><td>0.17</td><td>15</td><td>2.02</td></tr><tr><th><i>Eutawichthys zideki</i> <b>2</b></th><td>0</td><td>0</td><td>0</td><td>0</td><td>24</td><td>3.23</td></tr><tr><th><i>Eutawichthys stringeri</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>Family Ind. (BERYCIFORMES)</b></th></tr><tr><th><i>Ossulcus labiatus</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>3</td><td>0.40</td></tr><tr><th><b>Ophidiidae</b></th></tr><tr><th><i>Ampheristus americanus</i> 2</th><td>0</td><td>0</td><td>130</td><td>10.73</td><td>0</td><td>0</td></tr><tr><th><b>Bythitidae</b></th></tr><tr><th><i>Bidenichthys? crepidatus</i></th><td>0</td><td>0</td><td>2</td><td>0.17</td><td>0</td><td>0</td></tr><tr><th><i>Protobythites brzobohatyi</i></th><td>0</td><td>0</td><td>1</td><td>0.08</td><td>0</td><td>0</td></tr><tr><th><b>Pempheridae</b></th></tr><tr><th><i>Pempheris</i>? <i>huddlestoni</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>29</td><td>3.91</td></tr><tr><th><b>Serranidae</b></th></tr><tr><th><i>Serranus</i>? <i>caribbaeus</i></th><td>0</td><td>0</td><td>12</td><td>0.99</td><td>0</td><td>0</td></tr><tr><th><i>Serranus</i>? <i>severnensis</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0</td></tr><tr><th><b>Incertae sedis</b></th></tr><tr><th><i>Otolithopsis cumatilis</i></th><td>0</td><td>0</td><td>0</td><td>0</td><td>4</td><td>0.54</td></tr><tr><th>Percoid sp.</th><td>0</td><td>0</td><td>0</td><td>0</td><td>3</td><td>0.40</td></tr><tr><th><b>ORDER/Family unknown</b></th></tr><tr><th>Lapillus type 1</th><td>0</td><td>0</td><td>0</td><td>0</td><td>7</td><td>0.94</td></tr></tbody></table>
Evolutionary stasis, ecophenotypy, and environmental controls on ammonite morphology in the Late Cretaceous (Maastrichtian) Western Interior Seaway, USA
Open the record for dataset details and reuse information.
Data from: Aragonite bias exhibits systematic spatial variation in the late Cretaceous Western Interior Seaway, North America
Preferential dissolution of the biogenic carbonate polymorph aragonite promotes preservational bias in shelly marine faunas. Whilst field studies have documented the impact of preferential aragonite dissolution on fossil molluscan diversity, its impact on regional and global biodiversity metrics is debated. Epicontinental seas are especially prone to conditions which both promote and inhibit preferential dissolution, which may result in spatially extensive zones with variable preservation. Here we present a multi-faceted evaluation of aragonite dissolution within the late Cretaceous Western Interior Seaway of North America. Occurrence data of molluscs from two time intervals (Cenomanian-Turonian boundary, early Campanian) are plotted on new high-resolution paleogeographies to assess aragonite preservation within the seaway. Fossil occurrences, diversity estimates and sampling probabilities for calcitic and aragonitic fauna were compared in zones defined by depth and distance from the seaway margins. Apparent range sizes, which could be influenced by differential preservation potential of aragonite between separate localities, were also compared. Our results are consistent with exacerbated aragonite dissolution within specific depth zones for both time slices, with aragonitic bivalves additionally showing a statistically significant decrease in range size compared to calcitic fauna within carbonate-dominated Cenomanian-Turonian strata. However, we are unable to conclusively show that aragonite dissolution impacted diversity estimates. Therefore, whilst aragonite dissolution is likely to have affected the preservation of fauna in specific localities, time averaging and instantaneous preservation events preserve regional biodiversity. Our results suggest that the spatial expression of taphonomic biases should be an important consideration for paleontologists working on paleobiogeographic problems.
Phylogeny and biogeography of some Cretaceous spatangoid echinoids with special emphasis on taxa from the Western Interior Seaway
<p>Members of the echinoid order Spatangoida, a highly diverse and abundant marine invertebrate clade, were important denizens of the Cretaceous Western Interior Seaway (WIS), an epicontinental seaway that divided North America in two during an interval of greenhouse conditions between roughly 100 and 65 million years ago. A phylogenetic analysis of spatangoids was conducted using a character matrix of 32 characters from 21 species. Species that occur in the WIS were considered comprehensively, and species from other regions such as South America, Europe, and North Africa were also incorporated into the analysis. Phylogenetic patterns retrieved are largely congruent with pre-existing family-level classifications; however, species within several genera, especially <i>Hemiaster</i> and <i>Heteraster</i>, need to be re-assigned so that classification better reflects phylogeny. The genera <i>Washitaster</i> and <i>Heteraster</i> are closely related, as are <i>Mecaster</i>, <i>Palhemiaster</i>, and <i>Proraster</i>; <i>Pliotoxaster</i>, <i>Macraster</i>, and <i>Hemiaster</i>; and <i>Micraster</i> and <i>Diplodetus</i>. Biogeographic patterns were also considered using the phylogeny, and several episodes of vicariance and range expansion were identified. These were possibly related to some of the various major episodes of sea-level rise and fall during the Cretaceous. In particular, Valangian – mid-Aptian regressions may have caused vicariance within <i>Heteraster</i> and <i>Washitaster</i> while other early spatangoid vicariance may be related to regressions during the late Aptian – early Cenomanian. Further, vicariance caused by regressions during the mid-Cenomanian – Maastrichtian may have driven diversification within <i>Micraster</i> and <i>Diplodetus</i>. Lastly, transgressions during the late Aptian – early Cenomanian seem to have spurred prominent range expansions in <i>Mecaster</i> and <i>Hemiaster</i>.</p>
Phylogeny and biogeography of some Cretaceous spatangoid echinoids with special emphasis on taxa from the Western Interior Seaway
Open the record for dataset details and reuse information.
Data from: Aragonite bias exhibits systematic spatial variation in the late Cretaceous Western Interior Seaway, North America
Open the record for dataset details and reuse information.
Data from: Faunal response to sea-level and climate change in a short-lived seaway: Jurassic of the Western Interior, USA
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.