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441 results for “Maastrichtian”
Figure 18 in Diversity of late Maastrichtian Tyrannosauridae (Dinosauria: Theropoda) from western North America
Figure 18. Right dentary of LACM 23845 in lateral (A) and medial (B) views.
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.
Figure 3 in First dinosaur record from the Marília Formation (Maastrichtian) in the Gurinhatã municipality, Minas Gerais state, Brazil
Figure 3. An indeterminate lithostrotian sauropod partial right ulna, Paleo-UFG/V-0039, in (A) Anterior View; (B) Medial View; (C) Posterior View; (D) Lateral View; (E) Proximal View; (F) Distal view.
Figure 2 in First dinosaur record from the Marília Formation (Maastrichtian) in the Gurinhatã municipality, Minas Gerais state, Brazil
Figure 2. Geological map of the Gurinhatã, Detached formations that outcrops in the municipality.Geographic coordinate system: SIRGAS 2000. Source:IBGE/April 2019.
Figure 1 in First dinosaur record from the Marília Formation (Maastrichtian) in the Gurinhatã municipality, Minas Gerais state, Brazil
Figure 1. Location map of the municipality of Gurinhatã, Minas Gerais state. Geographic coordinate system: SIRGAS 2000. Source: IBGE/April 2019.
Figure 4 in First dinosaur record from the Marília Formation (Maastrichtian) in the Gurinhatã municipality, Minas Gerais state, Brazil
Figure 4. Proximal view of different titanosauriforms for comparison. (A) Sonorosaurus (from D'Emic et al., 2016); (B) Wintonotitan (from Poropat et al., 2014); (C) Haestasaurus (from Upchurch et al., 2015); (D) Yongjinglong (from Li et al., 2014); (E) Angolatitan (from Mateus et al., 2011); (F) Atsinganosaurus (from Díez Díaz et al., 2018); (G) Dreadnoughtus (from Ullmann & Lacovara, 2014); (H) Rapetosaurus (from Curry Rogers, 2009); (I) Neuquensaurus (from Otero, 2010); (J) Elaltitan (from Mannion & Otero, 2012); (K) Diamantinasaurus (from Poropat et al., 2015); (L) Malawisaurus (from Gomani, 2005); (M) Lohuecotitan (from Díez Díaz et al., 2016); (N) Mendozasaurus (from González-Riga et al., 2018); (O) Lirainosaurus (from Díez Díaz et al., 2013); and (P) Paleo-UFG/V-0039. Not in scale.
Figure 5 in First dinosaur record from the Marília Formation (Maastrichtian) in the Gurinhatã municipality, Minas Gerais state, Brazil
Figure 5. An indeterminate lithostrotian sauropod partial right ulna, paleo-ufg/v-0039, in (A) anterior view; (B) proximal view; (C) explanatory drawning of the right ulna in anterior view.
Fig. 2 in Broeckinella Hensoni N. Sp., A New Larger Benthic Foraminifera From The Upper Maastrichtian Of Iran And A Revision Of The Genus Broeckinella Henson, 1948
Fig. 2 Location of the Naghan and Mandegan sections in the Zagros Zone, SW Iran.
Fig. 1 in Suraqalatia Brasieri Görmuş, Lawa & Nuaimy, 2017 (Larger Benthic Foraminifera; Suraqalatiidae N. Fam.) From The Late Maastrichtian Of The Tarbur Formation (Zagros Fold-Thrust-Belt) And Remarks On Dicyclina Munier-Chalmas, 1887
Fig. 1 Location map of the Naghan and Mandegan sections (B: from google maps).
Fig. 1 in Zagrosella Rigaudii N. Gen., N. Sp., A New Biokovinoidean Foraminifer From The Maastrichtian Of Iran
Fig. 1 Location of the studied area and Naghan sections.
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>
Tabl. 1 in The Jordan theropod (Maastrichtian, Montana, U. S. A.) referred to the genus Aublysodon
<p>Tabl. 1 - Length and width measurements for Aublysotlon mirandus teeth. Mesures des longueur et largeur des dents de Aublysotlon mirandus.</p><table><tbody><tr><th>Specimen Number</th><th>anterioposterior length</th><th>width</th></tr></tbody><tbody><tr><th>KU 12919</th><td>11.5min</td><td>11.5mm</td></tr><tr><th>UCM 43447</th><td>30</td><td>25</td></tr><tr><th>UCM 38OÓO</th><td>80</td><td>45</td></tr><tr><th>UCMP 64143</th><td>60</td><td>45</td></tr><tr><th>UCMP 7309I</th><td>65</td><td>4o</td></tr><tr><th>UCMP 73l0l</th><td>50</td><td>25</td></tr><tr><th>UCMP 85141</th><td>35</td><td>25</td></tr><tr><th>UCMP 124367</th><td>25</td><td>20</td></tr><tr><th>UCMP 124398</th><td>45</td><td>25</td></tr><tr><th>UCMP 124971</th><td>40</td><td>25</td></tr><tr><th>UCMP 124980</th><td>35</td><td>30</td></tr><tr><th>UCMP 129981</th><td>35</td><td>25</td></tr><tr><th>UCMP 124982</th><td>25</td><td>20</td></tr><tr><th>UCMP 124993</th><td>30</td><td>20</td></tr><tr><th>UCMP 124999</th><td>45</td><td>30</td></tr><tr><th>UCMP 124995</th><td>75</td><td>45</td></tr><tr><th>UCMP 124996</th><td>55</td><td>10</td></tr><tr><th>USNM 8355</th><td>60</td><td>10</td></tr></tbody></table>
Size-driven preservational and macroecological biases in the latest Maastrichtian terrestrial vertebrate assemblages of North America
<p>The end-Cretaceous (K/Pg) mass-extinction event is the most recent and well-understood of the "Big Five" and triggered establishment of modern terrestrial ecosystem structure. Despite the depth of research into this event, our knowledge of upper Maastrichtian terrestrial deposits globally relies primarily on assemblage-level data limited to a few well-sampled formations in North America, the Hell Creek and Lance formations. These assemblages disproportionally affect our interpretations of this important interval. Multiple investigations have quantified diversity patterns within these assemblages, but the potential effect of formation-level size-dependent taphonomic biases and their implications on extinction dynamics remains unexplored. Here, the relationship between taphonomy and body size of the Hell Creek and Lance formation dinosaurs and mammals are quantitatively analyzed. Small-bodied dinosaur taxa (< 70 kg) are consistently less complete, unlikely to be articulated, and delayed in their description relative to their large-bodied counterparts. Family-level abundance (particularly skeletons) is strongly tied to body mass, and the relative abundance of juveniles of large-bodied taxa similarly is underrepresented. Mammals show similar but non significant trends. The results are remarkably similar to those from the Campanian-aged Dinosaur Park Formation, suggesting a widespread strong taphonomic bias against the preservation of small taxa, which will result in their seemingly depauperate diversity within the assemblage. This taphonomically skewed view of diversity and abundance of small-bodied taxa amidst our best late Maastrichtian samples has significant implications for understanding speciation and extinction dynamics (e.g., size-dependent extinction selectivity) across the K/Pg Boundary.</p>
Fig. 7 in The lambeosaurine dinosaur Amurosaurus riabinini, from the Maastrichtian of Far Eastern Russia
Fig. 7. Braincase of Amurosaurus riabinini (AEHM 1/232) in ventral (A, B) and caudal (C, D) views.
Fig. 4 in The lambeosaurine dinosaur Amurosaurus riabinini, from the Maastrichtian of Far Eastern Russia
Fig. 4. Reconstruction of the skull of Amurosaurus riabinini in left lateral view.
Fig. 6 in The lambeosaurine dinosaur Amurosaurus riabinini, from the Maastrichtian of Far Eastern Russia
Fig. 6. Braincase of Amurosaurus riabinini (AEHM 1/232) in rostral (A, B) and dorsal (C, D) views.
Evolutionary stasis, ecophenotypy, and environmental controls on ammonite morphology in the Late Cretaceous (Maastrichtian) Western Interior Seaway, USA
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Size-driven preservational and macroecological biases in the latest Maastrichtian terrestrial vertebrate assemblages of North America
Open the record for dataset details and reuse information.
Data from: Type Maastrichtian gastropod faunas evidencing rapid ecosystem recovery following the Cretaceous-Palaeogene boundary
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Figure 3 in Dinosaur Census Reveals Abundant Tyrannosaurus and Rare Ontogenetic Stages in the Upper Cretaceous Hell Creek Formation (Maastrichtian), Montana, USA
Figure 3. Tyrannosaurus (MOR 1125, ''B-rex'') teeth from the lower jaw of this medium-sized skeleton illustrate the extreme range in overall tooth size within one individual. A. A smaller posterior tooth from position #14 from the front of the jaw. B. A larger tooth from position #4 in the same jaw. This demonstrates why shed dinosaur teeth are not a reliable indicator of relative skeletal size and ontogenetic age. doi:10.1371/journal.pone.0016574.g003
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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