scholarly journals 3D models related to the publication: New information on the braincase and endocranial morphology of the Late Triassic neotheropod Zupaysaurus rougieri using Computed Tomography data

MorphoMuseuM ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. e96 ◽  
Author(s):  
Ariana Paulina-Carabajal ◽  
Martín Ezcurra ◽  
Fernando Novas
Keyword(s):  
Computed Tomography ◽  
3D Models ◽  
Late Triassic ◽  
New Information ◽  
Tomography Data

scholarly journals The braincase, brain and palaeobiology of the basal sauropodomorph dinosaur Thecodontosaurus antiquus

2020 ◽  
Author(s):  
Antonio Ballell ◽  
J Logan King ◽  
James M Neenan ◽  
Emily J Rayfield ◽  
Michael J Benton
Keyword(s):  
Computed Tomography ◽  
Foramen Magnum ◽  
Lateral View ◽  
Late Triassic ◽  
Bipedal Stance ◽  
New Information ◽  
Tomography Data ◽  
Basal Position

Abstract Sauropodomorph dinosaurs underwent drastic changes in their anatomy and ecology throughout their evolution. The Late Triassic Thecodontosaurus antiquus occupies a basal position within Sauropodomorpha, being a key taxon for documenting how those morphofunctional transitions occurred. Here, we redescribe the braincase osteology and reconstruct the neuroanatomy of Thecodontosaurus, based on computed tomography data. The braincase of Thecodontosaurus shares the presence of medial basioccipital components of the basal tubera and a U-shaped basioccipital–parabasisphenoid suture with other basal sauropodomorphs and shows a distinct combination of characters: a straight outline of the braincase floor, an undivided metotic foramen, an unossified gap, large floccular fossae, basipterygoid processes perpendicular to the cultriform process in lateral view and a rhomboid foramen magnum. We reinterpret these braincase features in the light of new discoveries in dinosaur anatomy. Our endocranial reconstruction reveals important aspects of the palaeobiology of Thecodontosaurus, supporting a bipedal stance and cursorial habits, with adaptations to retain a steady head and gaze while moving. We also estimate its hearing frequency and range based on endosseous labyrinth morphology. Our study provides new information on the pattern of braincase and endocranial evolution in Sauropodomorpha.

scholarly journals Revision of Erpetosuchus (Archosauria: Pseudosuchia) and new erpetosuchid material from the Late Triassic ‘Elgin Reptile’ fauna based on μCT scanning techniques

2020 ◽  
pp. 1-25
Author(s):  
Davide FOFFA ◽  
Richard J. BUTLER ◽  
Sterling J. NESBITT ◽  
Stig WALSH ◽  
Paul M. BARRETT ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Phylogenetic Relationships ◽  
Late Triassic ◽  
New Taxon ◽  
Micro Computed Tomography ◽  
Fossil Remains ◽  
New Information ◽  
Sandstone Formation ◽  
Shed Light

ABSTRACT The Late Triassic fauna of the Lossiemouth Sandstone Formation (LSF) from the Elgin area, Scotland, has been pivotal in expanding our understanding of Triassic terrestrial tetrapods. Frustratingly, due to their odd preservation, interpretations of the Elgin Triassic specimens have relied on destructive moulding techniques, which only provide incomplete, and potentially distorted, information. Here, we show that micro-computed tomography (μCT) could revitalise the study of this important assemblage. We describe a long-neglected specimen that was originally identified as a pseudosuchian archosaur, Ornithosuchus woodwardi. μCT scans revealed dozens of bones belonging to at least two taxa: a small-bodied pseudosuchian and a specimen of the procolophonid Leptopleuron lacertinum. The pseudosuchian skeleton possesses a combination of characters that are unique to the clade Erpetosuchidae. As a basis for investigating the phylogenetic relationships of this new specimen, we reviewed the anatomy, taxonomy and systematics of other erpetosuchid specimens from the LSF (all previously referred to Erpetosuchus). Unfortunately, due to the differing representation of the skeleton in the available Erpetosuchus specimens, we cannot determine whether the erpetosuchid specimen we describe here belongs to Erpetosuchus granti (to which we show it is closely related) or if it represents a distinct new taxon. Nevertheless, our results shed light on rarely preserved details of erpetosuchid anatomy. Finally, the unanticipated new information extracted from both previously studied and neglected specimens suggests that fossil remains may be much more widely distributed in the Elgin quarries than previously recognised, and that the richness of the LSF might have been underestimated.

scholarly journals New information on the early Permian lanthanosuchoid Feeserpeton oklahomensis based on computed tomography

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7753 ◽  
Author(s):  
Mark J. MacDougall ◽  
Anika Winge ◽  
Jasper Ponstein ◽  
Maren Jansen ◽  
Robert R. Reisz ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Phylogenetic Analyses ◽  
Lower Permian ◽  
Early Permian ◽  
Mandibular Ramus ◽  
Cave Deposits ◽  
New Information ◽  
The Many ◽  
Anatomical Information ◽  
Tomography Data

The cave deposits of the Lower Permian Richards Spur locality in Oklahoma, USA, have produced an incredible number of terrestrial tetrapod taxa, many of which are currently only known from this locality. One of the many recent taxa to be described from the locality was the small lanthanosuchoid parareptile Feeserpeton oklahomensis. Represented by a well-preserved, near complete skull, F. oklahomensis would have been a small predatory reptile, likely preying upon arthropods, and contributes to the extensive tetrapod fauna that was present at Richards Spur. New computed tomography data of the holotype and only specimen has allowed us to visualize and describe previously obscured and inaccessible anatomy of this taxon. These areas include the mandibular ramus, the palate, the sphenethmoid, the epipterygoids, and the braincase. Furthermore, this new anatomical information allowed formerly unknown character codings to be updated, thus we also performed new phylogenetic analyses that incorporated this new information. The results of these updated phylogenetic analyses are very similar to those of past studies, with F. oklahomensis being found as the sister taxon to all other lanthanosuchoids.

Morphometry of the sacrum and its implication on trans-sacral corridors using a computed tomography data-based three-dimensional statistical model

2017 ◽  
Vol 17 (8) ◽  
pp. 1141-1147 ◽  
Author(s):  
Daniel Wagner ◽  
Lukas Kamer ◽  
Takeshi Sawaguchi ◽  
Robert Geoff Richards ◽  
Hansrudi Noser ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Statistical Model ◽  
Three Dimensional ◽  
Tomography Data

Effect of Image Display on the Quality of Multiplanar Reconstruction of Computed Tomography Data

1993 ◽  
Vol 28 (2) ◽  
pp. 146-149 ◽  
Author(s):  
ELLIOT K. FISHMAN ◽  
DEREK R. NEY ◽  
AKIRA KAWASHIMA ◽  
WILLIAM W. SCOTT ◽  
DOUGLAS D. ROBERTSON
Keyword(s):  
Computed Tomography ◽  
Image Display ◽  
Multiplanar Reconstruction ◽  
Tomography Data
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