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421 results for “cranial anatomy”
Fig. 11 in Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada
Fig. 11. Albertosaurus sarcophagus (TMP 81.10.1). Right palatine in lateral (A) and medial (B) views.
Fig. 9 in Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada
Fig. 9. Albertosaurus sarcophagus (TMP 81.10.1). Left quadratojugal in lateral (A) and medial (B) views.
Fig. 14 in Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada
Fig. 14. Albertosaurus sarcophagus (TMP 81.10.1). Left surangular in lateral (A) and medial (B) views.
Fig. 21 in Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada
Fig. 21. Daspletosaurus sp. (TMP 94.143.1). Parietals in dorsal (A), left lateral (B), ventral (C), and posterior (D) aspects.
Fig. 7 in Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada
Fig. 7. Albertosaurus sarcophagus (TMP 81.10.1). Specimen drawing of top of skull in dorsal (A), lateral (B), and ventral (C) views.
Data from: An exceptionally preserved Late Devonian actinopterygian provides a new model for primitive cranial anatomy in ray-finned fishes
Actinopterygians (ray-finned fishes) are the most diverse living osteichthyan (bony vertebrate) group, with a rich fossil record. However, details of their earliest history during the middle Palaeozoic (Devonian) 'Age of Fishes' remains sketchy. This stems from an uneven understanding of anatomy in early actinopterygians, with a few well-known species dominating perceptions of primitive conditions. Here we present an exceptionally preserved ray-finned fish from the Late Devonian (Middle Frasnian, ca 373 Ma) of Pas-de-Calais, northern France. This new genus is represented by a single, three-dimensionally preserved skull. CT scanning reveals the presence of an almost complete braincase along with near-fully articulated mandibular, hyoid and gill arches. The neurocranium differs from the coeval Mimipiscis in displaying a short aortic canal with a distinct posterior notch, long grooves for the lateral dorsal aortae, large vestibular fontanelles and a broad postorbital process. Identification of similar but previously unrecognized features in other Devonian actinopterygians suggests that aspects of braincase anatomy in Mimipiscis are apomorphic, questioning its ubiquity as stand-in for generalized actinopterygian conditions. However, the gill skeleton of the new form broadly corresponds to that of Mimipiscis, and adds to an emerging picture of primitive branchial architecture in crown gnathostomes. The new genus is recovered in a polytomy with Mimiidae and a subset of Devonian and stratigraphically younger actinopterygians, with no support found for a monophyletic grouping of Moythomasia with Mimiidae.
FIGURE 9. Strict component consensus tree obtained following a in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 9. Strict component consensus tree obtained following a posteriori deletion of Talenkauen, Yandusaurus and Zephyrosaurus. Numbers at nodes indicate bootstrap proportions> 50% (1,000 replicates). See text for further details.
FIGURE 8 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 8. Referred specimens of Jeholosaurus shangyuanensis. A–D, IVPP V15718. E–F, IVPP V15719. A, F, right lateral view, B, dorsal view, C, E, ventral view and D, caudal view. Scale bars = 20 mm.
FIGURE 7 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 7. Referred skull and mandible of Jeholosaurus shangyuanensis (IVPP V15717) A, dorsal, B, ventral and C,
FIGURE 6 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 6. Outline drawing of the referred skull and mandible of Jeholosaurus shangyuanensis (IVPP V15716) in right lateral view. Abbreviations: an, angular; aof, antorbital fossa; aofo, antorbital fenestra; d, dentary; epi, epipterygoid; j, jugal; l, lachrymal; mx, maxilla; mxt, maxillary teeth; n, nasal; nf, nasal foramina; orn, ornamentation; pb, palpebral; pd, predentary; pf, prefrontal; pmx, premaxilla; po, postorbital; q, quadrate; qj, quadratojugal; qjf, quadratojugal foramen; sa, surangular; sq, squamosal; st, stapes.
FIGURE 5 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 5. Referred skull and mandible of Jeholosaurus shangyuanensis (IVPP V15716) in right lateral view. A, whole specimen and B, close up on jugal to illustrate its nodular ornamentation. Scale bars = 20 mm (A) and 10 mm (B).
FIGURE 4 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 4. Outline drawing of a referred specimen of Jeholosaurus shangyuanensis (IVPP V12530) in right lateral view. Abbreviations: an, angular; aof, antorbital fossa; cb, ceratobranchials; d, dentary; f, frontal; j, jugal; l, lachrymal; mx, maxilla; mxt, maxillary teeth; n, nasal; nd, nasal depression; nf, nasal foramina; pa, parietal; pf, prefrontal; pmx, premaxilla; po, postorbital; pr, prearticular; pt, pterygoid; q, quadrate; qj, quadratojugal; qjf, quadratojugal foramen; sa, surangular. Grey shaded area represents matrix.
FIGURE 3 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 3. Referred skull and mandible of Jeholosaurus shangyuanensis (IVPP V12530) in right lateral view. A, whole skull and B, close up on snout to illustrate the line of foramina that perforates the nasal (individual foramina are marked with an arrow). Scale bars = 20 mm (A) and 5 mm (B).
FIGURE 2 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 2. Outline drawings of the holotype skull of Jeholosaurus shangyuanensis (IVPP V12529) in A, dorsal and B, ventral views. Abbreviations: an, angular; aof, antorbital fossa; bo, basioccipital; bs, basisphenoid; cr, cervical rib; d, dentary; ect, ectopterygoid; en, endocast; epi, epipterygoid; ex, exoccipital/opisthotic; f, frontal; j, jugal; l, lachrymal; lpt, left pterygoid; mx, maxilla; mxt, maxillary teeth; n.a, articular surface for nasal; pa, parietal; pal, palatine; pd, predentary; pf.a, articular surface for prefrontal; pmx, premaxilla; po, postorbital; pr, prearticular; pt, pterygoid; q, quadrate; qj, quadratojugal; rpt, right pterygoid; sa, surangular; sp, splenial; sq, squamosal; XII, foramen for exit of cranial nerve XII.
FIGURE 1 in Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China
FIGURE 1. Holotype skull and mandibles of Jeholosaurus shangyuanensis (IVPP V12529) in A, dorsal, B, ventral and C, left lateral views. D, close up on left maxillary tooth row. Scale bars = 20 mm (A–C) and 10 mm (D).
Figure 12 in The cranial anatomy, ontogeny, and relationships of Karpinskiosaurus secundus (Amalitzky) (Seymouriamorpha, Karpinskiosauridae) from the Upper Permian of European Russia
Figure 12. Karpinskiosaurus secundus (Amalitzky, 1921): PIN 4617/201, partial parasphenoid; dashed line indicates imprint of anteriormost portion of cultriform process in matrix.
Figure 1 in The cranial anatomy, ontogeny, and relationships of Karpinskiosaurus secundus (Amalitzky) (Seymouriamorpha, Karpinskiosauridae) from the Upper Permian of European Russia
Figure 1. Karpinskiosaurus secundus (Amalitzky, 1921), PIN 2005/81 (holotype). Photographs of skull in dorsal (A), ventral (B), dorsolateral (C), and ventral (D) views.
Figure 5 in The cranial anatomy, ontogeny, and relationships of Karpinskiosaurus secundus (Amalitzky) (Seymouriamorpha, Karpinskiosauridae) from the Upper Permian of European Russia
Figure 5. Karpinskiosaurus secundus (Amalitzky, 1921), PIN 4617/158. A, photograph of anterolateral portion of skull in lateral view. B, outlines of several bones of the same specimen.
Figure 4 in The cranial anatomy, ontogeny, and relationships of Karpinskiosaurus secundus (Amalitzky) (Seymouriamorpha, Karpinskiosauridae) from the Upper Permian of European Russia
Figure 4. Karpinskiosaurus secundus (Amalitzky, 1921), PIN 4617/158. Photographs of partly disarticulated skull in dorsal (A) and lateral (B) views.
Figure 8 in The cranial anatomy, ontogeny, and relationships of Karpinskiosaurus secundus (Amalitzky) (Seymouriamorpha, Karpinskiosauridae) from the Upper Permian of European Russia
Figure 8. Karpinskiosaurus secundus (Amalitzky, 1921), PIN 4617/200. Photograph of skull (A) and outlines of its individual bones (B) in dorsal view. C, photograph of skull in ventral view. D, outline of pterygoid in dorsal view.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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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.