Results 31 to 40 of about 16,548 (278)
A Mutual Information Based Sequence Distance For Vertebrate Phylogeny Using Complete Mitochondrial Genomes [PDF]
, 2007 Traditional sequence distances require alignment. A new mutual information based sequence distance without alignment is defined in this paper. This distance is based on compositional vectors of DNA sequences or protein sequences from complete genomes ...
Anh, Vo +3 more
core +2 more sources
Questioning hagfish affinities of the enigmatic Devonian vertebrate Palaeospondylus [PDF]
Royal Society Open Science, 2017 Palaeospondylus gunni Traquair, 1890 is an enigmatic Devonian vertebrate whose taxonomic affinities have been debated since it was first described. Most recently, Palaeospondylus has been identified as a stem-group hagfish (Myxinoidea).
Zerina Johanson +5 more
doaj +1 more source
The southernmost range limit for the hidden angelshark Squatina occulta [PDF]
, 2016 Background: Angelsharks (Genus Squatina) are distributed in the southern Southwest Atlantic Ocean between southeastern Brazil and central Patagonia. The endangered hidden angelshark Squatina occulta is reported in the literature as ranging from Espírito ...
Chiaramonte, Gustavo Enrique +4 more
core +1 more source
Updated checklist of Azores Chondrichthyes (Vertebrata: Gnathostomata) [PDF]
Biodiversity Data Journal, 2021 Several lists of marine fish from Azores have been published in the past. Most of those publications are difficult to access on line and several were not published in peer-reviewed journals. This checklist updates all the chondrichthyan records for the Azores Exclusive Economic Zone (EEZ), according to the most recent taxonomic classification
Barcelos, Luis M. D. +2 more
openaire +4 more sources
Hybodont sharks of the English Bathonian and Callovian (Middle Jurassic). [PDF]
, 2008 Recent bulk sampling and study of museum collections has revealed a high diversity of hybodont sharks from the English Bathonian, with 15 species being recognised.
AGASSIZ +76 more
core +1 more source
Diversity, 2019 Chondrichthyes (sharks, rays, skates and chimaeras) are among the oldest extant predators and are vital to top-down regulation of oceanic ecosystems. They are an ecologically diverse group occupying a wide range of habitats and are thus, exploited by ...
Shaili Johri +3 more
doaj +1 more source
Turkish Journal of Agriculture: Food Science and Technology, 2022 In this study, a total of 364 samples were collected and 349 of them belonged to, 349 specimens of Dasyatis pastinaca, 6 of Gymnura altavela, 5 of Torpedo marmorato, 2 of Aetomylaeus bovinus and Mustelus mustelus, were obtained by-catch in trammel nets ...
Burcu Taylan +4 more
doaj +1 more source
Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]
, 2018 Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio +3 more
core +3 more sources
The Development of the Chimaeroid Pelvic Skeleton and the Evolution of Chondrichthyan Pelvic Fins
Journal of Developmental Biology, 2022 Pelvic girdles, fins and claspers are evolutionary novelties first recorded in jawed vertebrates. Over the course of the evolution of chondrichthyans (cartilaginous fish) two trends in the morphology of the pelvic skeleton have been suggested to have ...
Jacob B. Pears +5 more
doaj +1 more source
Diversification of the Neoselachii (Chondrichthyes) during the Jurassic and Cretaceous [PDF]
, 2006 The Neoselachii are a monophyletic group including all of the extant sharks and rays. They underwent rapid diversification throughout the Jurassic and Cretaceous, going from low-diversity assemblages of members of extinct orders in the Late Triassic to ...
Underwood, Charlie J.
core +1 more source