Results 41 to 50 of about 42,058 (303)

Body size estimation from isolated fossil bones reveals deep time evolutionary trends in North American lizards.

open access: yesPLoS ONE
Lizards play vital roles in extant ecosystems. However, their roles in extinct ecosystems are poorly understood because the fossil record of lizards consists mostly of isolated bones.
Sara J ElShafie
doaj   +1 more source

Genetic Analysis of Multiple Paternity in an Endangered Ovoviviparous Lizard Shinisaurus crocodilurus

open access: yes, 2015
The crocodile lizard (Shinisaurus crocodilurus) is an ovoviviparous lizard belonging to a monotypic family that originated during the end of the quaternary ice age.
Luo, Dan   +6 more
core   +1 more source

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

open access: yesThe Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga   +4 more
wiley   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

open access: yesThe Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom   +4 more
wiley   +1 more source

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

open access: yesThe 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   +5 more
wiley   +1 more source

Proximate Drivers of Population-Level Lizard Gut Microbial Diversity: Impacts of Diet, Insularity, and Local Environment

open access: yesMicroorganisms, 2022
Diet has been suggested to be an important driver of variation in microbiota composition in mammals. However, whether this is a more general phenomenon and how fast changes in gut microbiota occur with changes in diet remains poorly understood.
Virginie Lemieux-Labonté   +8 more
doaj   +1 more source

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

Identification of Late Pleistocene and Holocene fossil lizards from Hall's Cave (Kerr County, Texas) and a primer on morphological variation in North American lizard skulls.

open access: yesPLoS ONE
Fossil identification practices have a profound effect on our interpretation of the past because these identifications form the basis for downstream analyses. Therefore, well-supported fossil identifications are necessary for examining the impact of past
David T Ledesma   +4 more
doaj   +1 more source

First detection of a lizard-associated papillomavirus in the splendid japalure (Japalura splendida) from southwestern China

open access: yesFrontiers in Microbiology
IntroductionPapillomaviruses have been previously identified in mammals, avians and fish. However, few numbers of reptiles’ PVs have been characterized.MethodsThis study investigated the oral cavity of the splendid japalure (Japalura splendida) in ...
Zhige Tian   +7 more
doaj   +1 more source

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