Results 1 to 10 of about 2,152,627 (280)

The comparative osteology of Plesiochelys bigleri n. sp., a new coastal marine turtle from the Late Jurassic of Porrentruy (Switzerland) [PDF]

open access: goldPeerJ, 2017
Background During the Late Jurassic, several groups of eucryptodiran turtles inhabited the shallow epicontinental seas of Western Europe. Plesiochelyidae are an important part of this first radiation of crown-group turtles into coastal marine ecosystems.
Christian Püntener   +2 more
doaj   +5 more sources

Comparative osteology of Chondrostoma orientale and C. nasus [PDF]

open access: diamondیافته‌های نوین در علوم زیستی, 2020
Comparison of morphological structures is a key element in evolutionary biology and taxonomy, as well as in the studies concerning variation and biodiversity either at interspecific or intraspecific levels. This study aimed to compare the bony structures
Sayyed Ali Moezzi   +2 more
doaj   +4 more sources

Comparative Osteology, Phylogeny and Classification of the Eastern South American Catfish Genus Trichomycterus (Siluriformes: Trichomycteridae) [PDF]

open access: goldTaxonomy, 2021
Trichomycterus has been considered for a long time to be the most problematic genus of the diverse neotropical subfamily Trichomycterinae. Recently, Trichomycterus was restricted to a clade from eastern South America supported by molecular data, but no ...
Wilson J. E. M. Costa
doaj   +3 more sources

Comparative Analysis of the Systematics and Evolution of the Pampus Genus of Fish (Perciformes: Stromateidae) Based on Osteology, Population Genetics and Complete Mitogenomes [PDF]

open access: goldAnimals
Pampus is a widespread species of fish in the western Pacific and Indian Oceans that has significant commercial worth. Its evolutionary history and phylogenetics are still poorly understood, and details on its intraspecific taxonomy are debatable ...
Cheng Zhang   +9 more
doaj   +3 more sources

Comparative appendicular osteology of Tor spp. (Cyprinidae) in Indonesia

open access: yesDepik Jurnal
Tor tambroides, T. tambra, T. douronensis, and T. soro are native fish species to Indonesia with their natural habitat generally being upstream of rivers in hilly areas with clear water and strong currents.
Yusrizal Akmal   +7 more
doaj   +3 more sources

Comparative osteology of three endemic cichlids (Iranocichla spp.) (Actinopterygii, Perciformes, Cichlidae) from southern Iran [PDF]

open access: goldActa Ichthyologica et Piscatoria, 2021
Iranian cichlids are isolated disjunct populations of the African cichlids group, restricted to the Hormuz Strait region in the Hormuz basin, and are a very important group from both zoogeographic and phylogenetic points of view.
Neda Dastanpoor   +2 more
doaj   +4 more sources

Coping with the extremes: comparative osteology of the tepui-associated toad Oreophrynella and its bearing on the evolution of osteological novelties in the genus [PDF]

open access: bronzeZoological Journal of the Linnean Society, 2019
The only study of the osteology of the toad genus Oreophrynella dates back to 1971 and was based on a single species. Here, we use high-resolution X-ray microcomputed tomography to analyse the osteology of all nine described Oreophrynella species ...
Philippe J. R. Kok   +6 more
openalex   +2 more sources

Cranial arterial pattern of the Sri Lankan spotted chevrotain, Moschiola memmina, and comparative basicranial osteology of the Tragulidae [PDF]

open access: goldPeerJ, 2015
The cranial arterial pattern of artiodactyls deviates significantly from the typical mammalian pattern. One of the most striking atypical features is the rete mirabile epidurale: a subdural arterial meshwork that functionally and anatomically replaces ...
Haley D. O’Brien
doaj   +3 more sources

Comparative osteology of early Tertiary tapiromorphs (Mammalia, Perissodactyla) [PDF]

open access: bronzeZoological Journal of the Linnean Society, 2001
Characters of cranial and postcranial osteology provide important data for examining the interordinal relationships of mammals. Understanding variation in the cranial and postcranial skeleton is necessary for adequately representing ancestral character states for each mammalian order.
Luke Holbrook
openalex   +2 more sources

Comparative cranial osteology of European gekkotans (Reptilia, Squamata) [PDF]

open access: greenZoological Journal of the Linnean Society, 2017
Comparative osteology of European lizards, and of European geckos in particular, is poorly known, resulting in problems when trying to determine to species isolated bones found as fossils or as remains of prey in scats or pellets. In order to partly solve this issue, we here present a detailed comparative analysis of the cranial bones of the four most ...
Andrea Villa   +3 more
openalex   +5 more sources

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