Results 61 to 70 of about 5,477 (253)

A second species of non‐crocodyliform crocodylomorph from the Late Triassic fissure deposits of southwestern UK: Implications for locomotory ecological diversity in Saltoposuchidae

The Anatomical Record, EarlyView.
Abstract The Late Triassic–Early Jurassic fissures of the Bristol Channel area (southwest England and south Wales) are renowned for their diverse vertebrate faunas. These assemblages have yielded an array of predominantly small‐bodied forms that are crucial to our understanding of the early evolution of several major tetrapod clades.
Ewan H. Bodenham, Stephan N. F. Spiekman, Susannah C. R. Maidment, Paul Upchurch, Philip D. Mannion   +4 more
wiley   +1 more source

Replenishment of Methane in Titan’s Atmosphere by Intrusion-driven Thermal Destabilization of Methane Clathrate Hydrates

The Planetary Science Journal
Titan’s atmospheric methane requires replenishment due to photolysis-driven loss. We have modeled the destabilization of an upper layer of methane clathrate hydrates (MCH) containing some ammonia (NH _3 ) through thermal interaction with a warm ice ...
Ashley Gerard Davies, Mathieu Choukroun, Christophe Sotin, Tuan H. Vu, Elodie Gloesener   +4 more
doaj   +1 more source

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Deformation characteristics of solid-state benzene as a step towards understanding planetary geology. [PDF]

Nat Commun, 2022
Zhang W, Zhang X, Edwards BW, Zhong L, Gao H, Malaska MJ, Hodyss R, Greer JR.   +7 more
europepmc   +1 more source

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

The Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo, Ricardo Araújo, Bruce S. Rubidge, Michael O. Day, Kathleen N. Dollman, Julien Benoit   +5 more
wiley   +1 more source

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

The 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

Effect of a Surficial Porous Brittle Layer on the Dynamics and Equilibrium Thickness of Europa’s Ice Shell

The Planetary Science Journal
Tectonic and cryovolcanic features on Europa suggest a dynamically active ice shell with a highly deformable near-surface brittle layer. Shell thickness estimates based on geological interpretation and thermal modeling vary from 10 km to more than 30 km.
Rawad Himo, Sabrina Carpy, Gabriel Tobie, Cathy Castelain   +3 more
doaj   +1 more source

Clade‐wide morphological and functional variation of the sauropsid columella

The Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock, Serjoscha W. Evers, Tiago R. Simões, Garth M. Spellman, Daniel J. Field   +4 more
wiley   +1 more source

Working with laws, regularities and singularities in biology: The evolution of mammalian red blood cell size as a case study

The Anatomical Record, EarlyView.
Abstract Phylogenetic comparative methods have been used in recent literature to work with laws and test for regularities (evolutionary associations of quantitative features) and evolutionary singularities (features that evolved in a single taxon). We analyzed these uses epistemologically, taking the evolution of red‐blood‐cell mean corpuscular volume (
Jorge Cubo, Paul Aubier, Cassandra Cheyron, Isabelle Drouet   +3 more
wiley   +1 more source