Results 11 to 20 of about 480 (153)

Norms of evidence in the classification of living fossils

open access: yesFrontiers in Ecology and Evolution, 2023
Some species have held fast for millions of years as constants in a changing world. Often called “living fossils,” these species capture scientific and public interest by showing us the vestiges of an earlier world.
Beckett Sterner
doaj   +1 more source

Trypanosoma sp. em jacaré, Caiman crocodilus yacare (Daudín, 1823) (Crocodilia: Alligatoridae)

open access: yesSemina: Ciências Agrárias, 1990
Infecção natural por Trypanosoma sp. é descrita em jacaré, Caiman crododilus yacare (Crocodilia: Alligatoridae) em Mato Grosso do Sul, Brasil. O tripanosoma distingue-se de Trypanosoma grayi, do crocodilo Africano, Crocodilus niloticus (Crocodilia ...
Vânia Lúcia Brandão Nunes   +1 more
doaj   +1 more source

Hearing in the Crocodilia [PDF]

open access: yesProceedings of the National Academy of Sciences, 1971
Measurements of auditory sensitivity in terms of the cochlear potentials were made in young specimens of three species of crocodilians, Caiman crocodilus and Alligator mississipiensis of the subfamily Alligatorinae and Crocodylus ...
openaire   +2 more sources

Dwarfism and feeding behaviours in Oligo–Miocene crocodiles from Riversleigh, northwestern Queensland, Australia [PDF]

open access: yesActa Palaeontologica Polonica, 2016
Instances of dwarfism in the fossil record are of interest to palaeontologists because they often provide insight into aspects of palaeoecology. Fossil species of Australian-Pacific mekosuchine genus Mekosuchus have been described as dwarf, primarily ...
Michael Stein   +2 more
doaj   +1 more source

Asociacion faunistica de vertebrados mesozoicos de la localidad de Galve (Teruel)

open access: yesEstudios Geologicos, 2002
Los sedimentos del Tithónico-Barremiense de la Cuenca Ibérica aflorantes en los alrededores de la localidad de Galve (Teniel), son particularmente ricos en restos de vertebrados mesozoicos.
B. Sánchez Hemández
doaj   +1 more source

New remains of von Meyer, 1837 (Crocodilia, Thalattosuchia) from the Kimmeridgian of Germany [PDF]

open access: yesFossil Record, 2013
The fourth complete skull of the marine crocodilian Machimosaurus von Meyer, 1837 is hereby described together with an associated complete mandible and disarticulated postcranial elements from the Kimmeridgian of Neuffen, Germany.
J. E. Martin, P. Vincent
doaj   +1 more source

New remains of Machimosaurus hugii von Meyer, 1837 (Crocodilia, Thalattosuchia) from the Kimmeridgian of Germany [PDF]

open access: yesFossil Record, 2013
The fourth complete skull of the marine crocodilian Machimosaurus von Meyer, 1837 is hereby described together with an associated complete mandible and disarticulated postcranial elements from the Kimmeridgian of Neuffen, Germany.
J. E. Martin, P. Vincent
doaj   +3 more sources

Amphibians and reptiles in the comparative osteological collection of the National Museum of Natural History, National Academy of Sciences of Ukraine

open access: yesGeo&Bio, 2018
The paper deals with the study of the comparative osteological collection of extant amphibians and reptiles deposited in the Department of Palaeontology of the National Museum of Natural History, NAS of Ukraine.
V. Yanenko, O. Kovalchuk, N. Smirnov
doaj   +1 more source

Inference of the protokaryotypes of amniotes and tetrapods and the evolutionary processes of microchromosomes from comparative gene mapping. [PDF]

open access: yesPLoS ONE, 2012
Comparative genome analysis of non-avian reptiles and amphibians provides important clues about the process of genome evolution in tetrapods. However, there is still only limited information available on the genome structures of these organisms ...
Yoshinobu Uno   +14 more
doaj   +1 more source

Antimicrobial Peptides in Reptiles

open access: yesPharmaceuticals, 2014
Reptiles are among the oldest known amniotes and are highly diverse in their morphology and ecological niches. These animals have an evolutionarily ancient innate-immune system that is of great interest to scientists trying to identify new and useful ...
Monique L. van Hoek
doaj   +1 more source

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