Results 51 to 60 of about 1,277,530 (233)

Resetting the evolution of marine reptiles at the Triassic-Jurassic boundary [PDF]

open access: yesProceedings of the National Academy of Sciences, 2011
Ichthyosaurs were important marine predators in the Early Jurassic, and an abundant and diverse component of Mesozoic marine ecosystems. Despite their ecological importance, however, the Early Jurassic species represent a reduced remnant of their former significance in the Triassic. Ichthyosaurs passed through an evolutionary bottleneck at, or close to,
Thorne, Philippa M   +2 more
openaire   +4 more sources

Conservation status of New Zealand reptiles, 2012 [PDF]

open access: yes, 2013
: The conservation status of all known New Zealand reptile taxa was reassessed using the New Zealand Threat Classification System (NZTCS). A full list is presented, along with a statistical summary and brief notes on the most important changes. This list
Rod Hitchmough
core  

Osteohistological evidence for terrestrial adaptation and an extended growth period in mekosuchine crocodylians and its potential role in their extinction

open access: yesThe Anatomical Record, EarlyView.
Abstract The Australasian crocodylian fossil record is dominated by the extinct endemic clade Mekosuchinae, with known members spanning the Eocene‐to‐Holocene. This diverse clade exhibited high morphological disparity, from early members superficially similar to Crocodylus, to more terrestrial forms later in the clade's evolutionary history.
Devin K. Hoffman   +9 more
wiley   +1 more source

Morphological description of the oropharyngeal cavity of Kinosternon scorpioides scorpioides (Linnaeus, 1766), (Testudines: Kinosternidae)

open access: yesThe Anatomical Record, EarlyView.
Gross morphology, Light Microscopy and Scanning Electron Microscopy revealed the structural organization of the oropharyngeal cavity of Kinosternon scorpioides scorpioides, characterized by mucous epithelium, epithelial pores, and developed lingual papillae.
Andréa Magalhães Bezerra   +7 more
wiley   +1 more source

Evolution of the Nasal Cavity and Cranial Vasculature in Extinct Marine Reptiles

open access: yes, 2021
Studying the evolutionary changes to the blood vessels and the nasal cavity in extinct reptiles that reinvaded a marine ...
Morgan, Donald
core   +1 more source

ESTADO ACTUAL DEL CONOCIMIENTO DE LOS REPTILES MARINOS CRETÁCICOS DE COLOMBIA

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2015
Resumen. En este artículo se pretende mostrar el estado actual del conocimiento de los reptiles marinos cretácicos de Colombia. Se ofrece una breve síntesis histórica de los estudios realizados, se brinda un panorama de los taxones presentes y se ...
María E. Páramo Fonseca
doaj  

Antimicrobial peptides from marine animals: Sources, structures, mechanisms and the potential for drug development

open access: yesFrontiers in Marine Science, 2023
The emergence of antibiotic-resistant bacteria has become a major challenge in current clinical treatment. As essential natural molecules involved in innate immunity, antimicrobial peptides (AMPs) have the potential to break the limits of antibiotic ...
Shuocun Wang   +6 more
doaj   +1 more source

Histological description and bone compactness analysis of fossil (Aldabrachelys sp.) and extant Aldabra giant tortoise (Aldabrachelys gigantea) shell bone fragments

open access: yesThe Anatomical Record, EarlyView.
Abstract Aldabra Atoll, north of Madagascar and part of the Seychelles Outer Islands, is home to the Aldabra giant tortoise, Aldabrachelys gigantea, the only survivor of several species of giant tortoises that were once widespread on islands across the Western Indian Ocean.
Stefanie Herter   +9 more
wiley   +1 more source

Les Reptiles Marins du toarcien (Jurassique inferieur) Belgo-Luxembougeois [PDF]

open access: yes, 1994
Toarcian (Lower Jurassic) outcrops have yielded many marine reptiles Ichthyosauria, Thalattosuchia and Plesiosauria in Belgium and, principally, in Grand Duchy of Luxemburg.
Godefroit, P
core  

Morphological plasticity in the dentition of the lungfish Gnathorhiza from the Permian of Brazil: A population‐level geometric morphometric analysis

open access: yesThe Anatomical Record, EarlyView.
Abstract Dental plates are pivotal in the lungfish paleontological record, constituting highly mineralized structures resilient to diagenetic processes. This study provides a detailed description and quantitative shape analysis of 95 newly discovered Gnathorhiza sp. dental plates from the Middle–Late Permian Corumbataí Formation, Brazil.
Mauro B. S. Lacerda   +4 more
wiley   +1 more source

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