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Figure 3 in Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei)
Figure 3. Drawings of Eocene otoliths from Seymour Island. A—C, Argentina antarctica sp. nov., holotype, NRM-PZ P.15964, mirror imaged; A, outer face; B, ventral view; C, inner face. D—I, Diaphus? marambionis sp. nov.; D—F, holotype, NRM-PZ P.15966; D, anterior view, E, inner face, F, ventral view; G—I, (mirror imaged) paratypes, NRM-PZ P.15967; G, inner face; H, ventral view; I, inner face. J, K, Paraulopus sp., NRM-PZ P.15965, mirror imaged; J, inner face; K, ventral view.
Figure 2. Location photographs. A in Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei)
Figure 2. Location photographs. A, aerial view of IAA 1/90, 'Ungulate site', 64Ǫ14,04.67ĮĮS,56Ǫ 39,56.38ĮĮ W, marked by asterisk; B, panoramic view of site IAA 1/90 with 'Natica horizon' marked by asterisks; C, Argentine-Swedish field party collecting fossils at IAA 2/95, 'Marsupial site', 64Ǫ13,58ĮĮS,56Ǫ39,06ĮĮ W); D, panoramic view of site IAA 2/95 with Cockburn Island in background; E, 'Natica horizon' near site IAA 2/95 showing lens-like character of the beds. Photographs by F. Degrange (A, D), T. Mors (B) and J. Hagstrom (C, E).
Figure 1. Location and stratigraphy. A in Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei)
Figure 1. Location and stratigraphy. A, map of Antarctica showing the position of the Antarctic Peninsula; B, map of the Antarctic Peninsula showing Seymour Island; C, geological map of Seymour Island showing the outcrop of Telm 4-5 and localities IAA 1/90 and 2/ 95; D, composite measured section through the La Meseta Formation showing the stratigraphical position of the sampled 'Natica horizon' (IAA 1/90 and 2/95). Modified from Reguero et al. (2013). Strontium date values from Dutton et al. (2002), Ivany et al. (2008), Dingle & Lavelle (1998) and Reguero et al. (2002).
Figure 14 in A silicified Early Triassic marine assemblage from Svalbard
Figure 14. Ranges of benthic invertebrate families identified from the base of the Vikinghøgda Formation. Grey bars = range extensions based on this study; black bars = previously known unequivocal ranges of families; dashed lines = ghost ranges. Chang. = Changhsingian. G = Griesbachian, D = Dienerian, Sm = Smithian. Radiometric ages (bottom) after Lehrmann et al. (2006), Galfetti et al. (2007) and Shen et al. (2011). Late Permian mass extinction event is indicated by a vertical dark grey bar.
Figure 1 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 1. Locality map and section log from the 'Kottwitz' quarry (southern Burgenland, Austria), where the Caudicriodus woschmidti conodont cluster was found.
Figure 13 in A silicified Early Triassic marine assemblage from Svalbard
Figure 13. Sinuarbullina yangouensis (Pan et al., 2003). A, B, lateral views; C, D, views of the protoconch. Scale bars = 1 mm, except D. Note: specimen lost by WJF after photography.
Figure 11 in A silicified Early Triassic marine assemblage from Svalbard
Figure 11. Glabrocingulum parvum sp. nov. A, B, apertural view; A, holotype, NHMUK PI MG 1531; B, paratype, NHMUK PI MG 1518; C–E, NHMUK PI MG 1531; C, lateral view; D, side view of initial whorls; E, apical view; F, apertural view of a larval shell, NHMUK PI MG 1520. Scale bars = 1 mm, except F.
Figure 10. Warthia zakharovi Kaim, 2009. A in A silicified Early Triassic marine assemblage from Svalbard
Figure 10. Warthia zakharovi Kaim, 2009. A, NHMUK PI MG 1502, apertural view; B, C, NHMUK PI MG 1505; B, apertural view; C, lateral view; D, E, NHMUK PI MG 1509; D, lateral view; E, apertural view; F, NHMUK PI MG 1508, apical view; G, H, NHMUK PI MG 1504; G, apical view; H, protoconch. Scale bars = 500 µm, except H.
Figure 8 in A silicified Early Triassic marine assemblage from Svalbard
Figure 8. Unionites aff. subrectus (Bittner, 1901). A, NHMUK PI MB 1246, external view, right valve; B, NHMUK PI MB 1245, external view, left valve; C, NHMUK PI MB 1246, internal view, right valve; D, NHMUK PI MB 1245, internal view, left valve; E, NHMUK PI MB 1195, external view, right valve; F, hinge margin, NHMUK PI MB 1245, left valve; G, hinge margin, NHMUK PI MB 1246, right valve. Scale bars = 1 mm.
Figure 9 in A silicified Early Triassic marine assemblage from Svalbard
Figure 9. Neoschizodus laevigatus (Goldfuss, 1837). A, NHMUK PI MB 1251, external view, left valve; B–G, J, larval shells; B, NHMUK PI MB 1256, external view, right valve; C, NHMUK PI MB 1259, external view, left valve; D, NHMUK PI MB 1257, external view, right valve; E, NHMUK PI MB 1260, internal view, left valve; F, NHMUK PI MB 1258, internal view, left valve; G, NHMUK PI MB 1255, internal view, right valve; H, I, beak of adult specimen, NHMUK PI MB 1251; J, hinge plate of a larval shell, NHMUK PI MB 1260. Scale bars: A = 2 mm; B–G, I = 200 µm; H = 1 mm; J = 50 µm.
Figure 8 in Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei)
Figure 8. Eocene palaeogeography in south polar projection and the distributions of selected taxa of Protacanthopterygii, Paracanthopterygii and Berycoidei. Regions studied for fossil otoliths are marked by an asterisk (each region may contain multiple locations). Otolith data are compiled from Schwarzhans (1980, 1985); the palaeogeographical reconstruction is based on Reguero et al. (2013); the delimitation of the Weddellian bioprovince is based on Zinsmeister (1982); the reconstruction of palaeocurrents is composed from Crame (1999) and Huber et al. (2004).
Figure 12 in A silicified Early Triassic marine assemblage from Svalbard
Figure 12. Pseudozygopleuridae gen et sp. indet., larval shell. A, B, NHMUK PI MG 1532; A, apertural view; B, lateral view; C, NHMUK PI MG 1533, apical view; D, side view of initial whorl, NHMUK PI MG 1532. Scale bars = 100 µm.
Figure 5 in A silicified Early Triassic marine assemblage from Svalbard
Figure 5. Austrotindaria antiqua sp. nov. A, holotype, NHMUK PI MB 1240, external view, right valve; B, paratype, NHMUK PI MB 1241, external view, right valve; C, holotype, NHMUK PI MB 1240, internal view, right valve; D, NHMUK PI MB 1191, external view, right valve; E, NHMUK PI MB 1199, external view, left valve; F, NHMUK PI MB 1196, external view, right valve; G, NHMUK PI MB 1242, hinge plate of left valve; H, NHMUK PI MB 1194, dorsal view, right valve; I, articulated specimen, NHMUK PI MB 1243; J, larval shell, NHMUK PI MB 1244, left valve. Scale bars: A–C, G = 500 µm; D–F = 1 mm; I, J = 100 µm.
Figure 6 in A silicified Early Triassic marine assemblage from Svalbard
Figure 6. Austrotindaria svalbardensis sp. nov. A, paratype, NHMUK PI MB 1231, external view, left valve; B, holotype, NHMUK PI MB 1223, external view, right valve; C, NHMUK PI MB 1190, left valve, external view; D, larval shell, NHMUK PI MB 1234, external view, right valve; E, NHMUK PI MB 1225, internal view, left valve; F, NHMUK PI MB 1227, internal view, left valve; G, larval shell, NHMUK PI MB 1237, internal view, right valve; H, paratype, posterior and anterior hinge plate junction, NHMUK PI MB 1231. Scale bars = 500 µm.
Figure 7 in A silicified Early Triassic marine assemblage from Svalbard
Figure 7. Malletiidae gen et sp. indet., larval shells. A, NHMUK PI MB 1249, external view; B, NHMUK PI MB 1249, internal view; C, NHMUK PI MB 1248, internal view. Scale bars = 100 µm.
Figure 1. Previous Pteraspidiformes phylogenies. A in Exploring phylogenetic relationships of Pteraspidiformes heterostracans (stem-gnathostomes) using continuous and discrete characters
Figure 1. Previous Pteraspidiformes phylogenies. A, Blieck's (1984) Pteraspidiformes phylogeny for all the then-known taxa. B, Janvier's (1996) phylogeny for the major clades of Pteraspidiformes. C, Ilyes & Elliott's (1994) phylogeny for the Western USA taxa. D, Perǹegre's (2002) phylogeny to determine the position of Doryaspis. E, Perǹegre & Goujet's (2007) phylogeny to determine the position of Gigantaspis. F, Perǹegre & Elliott's (2008) most recent Pteraspidiformes phylogeny with the identification of major families. The Psammosteidae are highlighted when included in an analysis.
Figure 7. Pteraspidiformes phylogeny with genera plotted against their stratigraphical occurrences. A in Exploring phylogenetic relationships of Pteraspidiformes heterostracans (stem-gnathostomes) using continuous and discrete characters
Figure 7. Pteraspidiformes phylogeny with genera plotted against their stratigraphical occurrences. A, discrete and continuous character analysis with implied weighting (k = 3). B, discretized analysis with implied weighting (k = 3). Colours relate to palaeobiogeographical provinces.
Figure 4. Results from the phylogenetic analysis using discrete data only. A in Exploring phylogenetic relationships of Pteraspidiformes heterostracans (stem-gnathostomes) using continuous and discrete characters
Figure 4. Results from the phylogenetic analysis using discrete data only. A, strict consensus of 275 most parsimonious trees with equal character weights; length 276 steps, consistency index (CI) = 0.35, retention index (RI) = 0.59, and rescaled consistency index (RC) = 0.22. B, strict consensus of four most parsimonious trees with implied character weighting (k = 3) (tree length 23.11). Psammosteidae taxa in bold.
Figure 5 in Exploring phylogenetic relationships of Pteraspidiformes heterostracans (stem-gnathostomes) using continuous and discrete characters
Figure 5. Phylogenetic results from data sets containing discrete (1—64) and continuous (66, 68, 70, 72, 77, 80, 82, 86) characters. A, most parsimonious tree with equally weighted characters (tree length 319.36). B, most parsimonious tree with implied weighting (k = 3) (tree length 26.53). Psammosteidae taxa in bold (for which quantitative characters have been treated as inapplicable, i.e. nonhomologous).
Figure 4 in A silicified Early Triassic marine assemblage from Svalbard
Figure 4. Nucinella nakremi sp. nov. A, holotype, NHMUK PI MB 1219, external view, left valve; B, paratype, NHMUK PI MB 1220, external view, left valve; C, holotype, NHMUK PI MB 1219, interior view, left valve; D, paratype, NHMUK PI MB 1220, interior view (transposed hinge), left valve. Scale bars = 500 µm.
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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)
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DANDI Archive for NWB datasets
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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.