Results 61 to 70 of about 36,243 (274)

Photon-Counting Detector CT Scan of Dinosaur Fossils: Initial Experience

open access: yesJournal of Imaging
Beyond clinical areas, photon-counting detector (PCD) CT is innovatively applied to study paleontological specimens. This study presents a preliminary investigation into the application of PCD-CT for imaging large dinosaur fossils, comparing it with ...
Tasuku Wakabayashi   +12 more
doaj   +1 more source

Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana

open access: yesThe Anatomical Record, EarlyView.
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley   +1 more source

The petrotympanic canal (Huguier canal): Evolutionary, anatomical, and medical perspectives

open access: yesThe Anatomical Record, EarlyView.
Abstract The petrotympanic canal, traditionally referred to as Civinini's or Huguier's canal, represents an anatomical passage connecting the middle ear and temporomandibular joint (TMJ). Despite its early description, its structural complexity and functional significance have often been underestimated. In this study, we combined historical, anatomical,
Andrea Papini   +8 more
wiley   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

open access: yesThe Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti   +2 more
wiley   +1 more source

Joseph Leidy between two paradigms of Paleontology

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Humanas, 2012
With the acceptance of the methods and research program developed by Georges Cuvier for the study of fossils, Paleontology had its first Kuhnian paradigm installed.
Felipe Faria
doaj  

Community-driven enhancement of information ecosystems for the discovery and use of paleontological specimen data: Stakeholder engagement workshop [PDF]

open access: yesResearch Ideas and Outcomes
A stakeholder engagement workshop was held in May 2024 as part of the "Community-driven enhancement of information ecosystems for the discovery and use of paleontological specimen data" project, which is funded under the United States National ...
Talia Karim   +3 more
doaj   +3 more sources

Vertebrate Paleontology in Arizona

open access: yes, 2005
vertebrate; paleontology ...
Andrew B. Heckert and Spencer G. Lucas, eds.
core  

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

open access: yesThe Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox   +8 more
wiley   +1 more source

Elliptic Fourier analysis as a tool for the taxonomic identification of isolated theropod pedal phalanges

open access: yesThe Anatomical Record, EarlyView.
Abstract Studies of Upper Cretaceous deposits in North America have provided invaluable insights into the continental ecosystems of this time. Theropod (Saurischia, Dinosauria) pedal phalanges are commonplace in these deposits but can be difficult to identify at a finer taxonomic resolution.
Trystan M. Warnock‐Juteau   +2 more
wiley   +1 more source

Problems of chronology of the “upper complex” of the Sukhotino-4 Paleolithic site (Eastern Transbaikalia): geological, geomorphological, and paleontological aspects [PDF]

open access: yesВестник археологии, антропологии и этнографии
Currently, the most debated issues concerning the Sukhotino-4 site pertain to the integrity of its archaeologi-cal complexes and the conflicting radiocarbon dates obtained for cultural layers 1–3, which are grouped into the so-called “upper complex ...
Filatov E.A.   +2 more
doaj   +1 more source

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