Results 61 to 70 of about 100,570 (383)

Paleontology: Outrunning Time [PDF]

open access: yes, 2017
In this paper, I discuss several temporal aspects of paleontology from a philosophical perspective. I begin by presenting the general problem of “taming” deep time to make it comprehensible at a human scale, starting with the ...
Huss, John
core   +1 more source

A reappraisal of the Italian record of the Cretaceous pachycormid fish Protosphyraena Leidy, 1857 [PDF]

open access: yes, 2017
The genus Protosphyraena is known mainly from partial remains, consisting of isolated blade-like teeth, conical rostra and scythe-like pectoral fins. This paper provides a new insight into partial specimens of the genus Protosphyraena from the Cretaceous
Amalfitano, Jacopo   +3 more
core   +3 more sources

Early synapsids neurosensory diversity revealed by CT and synchrotron scanning

open access: yesThe Anatomical Record, EarlyView.
Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
J. Benoit   +6 more
wiley   +1 more source

Modeling tooth enamel in FEA comparisons of skulls: Comparing common simplifications with biologically realistic models

open access: yesiScience, 2021
Summary: Palaeontologists often use finite element analyses, in which forces propagate through objects with specific material properties, to investigate feeding biomechanics. Teeth are usually modeled with uniform properties (all bone or all enamel).
Eva C. Herbst   +4 more
doaj   +1 more source

Місце палеонтологічної науки серед інших біологічних наук в контексті висвітлення історії життя на землі [PDF]

open access: yes, 2012
У статті розглядається положення палеонтологічної науки серед інших біологічних наук в загальній роботі по відновленню історії життя на землі. Наводяться причини відставання палеонтології, характеризуються особливості палеонтологічного матеріалу ...
Дефорж, Г. В.
core  

Morphological diversity of saber‐tooth upper canines and its functional implications

open access: yesThe Anatomical Record, Volume 308, Issue 11, Page 3007-3021, November 2025.
Abstract Elongated upper canine teeth, commonly known as saber‐teeth, have evolved three times within the sub‐order Feliformia. The species that wielded them flourished throughout the Cenozoic and have historically been separated into two morphological groups: the dirk‐tooths with longer, flatter canines, and the scimitar‐tooths with shorter, serrated ...
Caitlin D. Shelbourne   +1 more
wiley   +1 more source

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

Evolutionary relationships and systematics of Atoposauridae (Crocodylomorpha: Neosuchia): implications for the rise of Eusuchia [PDF]

open access: yes, 2016
Atoposaurids are a group of small-bodied, extinct crocodyliforms, regarded as an important component of Jurassic and Cretaceous Laurasian semi-aquatic ecosystems.
Mannion, PD, Tennant, JP, Upchurch, P
core   +3 more sources

Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis

open access: yesThe Anatomical Record, Volume 308, Issue 11, Page 2976-2993, November 2025.
Abstract The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho
Narimane Chatar   +5 more
wiley   +1 more source

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