Results 101 to 110 of about 5,320 (221)
First records of the little sleeper shark, somniorum rostratus, in Maltese fisheries' landings [PDF]
, 2013 In 2011, two little sleeper sharks, Somniosus rostratus, were captured from the Central Mediterranean, making them the first two records of this shark species landed in the Maltese Islands.
Dent, Elizabeth +2 more
core
Deep water chondrichthyans from the Early Miocene of the Vienna Basin (Central Paratethys, Slovakia) [PDF]
, 2011 Sampling of latest Burdigalian (Miocene) silty clays from the Malé Karpaty Mountains in the Slovakia revealed a deep−water, low diversity shark fauna.
Schlogl, J., Underwood, Charlie J.
core +2 more sources
Chondrichthyan egg cases from the south‐west Atlantic Ocean
Journal of Fish Biology, 2011 Egg cases of 21 oviparous chondrichthyan species from the south‐west Atlantic Ocean are described and compared. The catsharkSchroederichthys biviushas a cigar‐shaped egg case with curled tendrils only at the posterior end. Egg cases of the elephant fishCallorhinchus callorynchusare spindle‐shaped with anterior and posterior tubular extensions and ...
Mabragaña, Ezequiel +5 more
openaire +3 more sources
Life histories of deepwater chondrichthyans
, 2015 As fisheries move into deeper waters the ability of deepwater chondrichthyans to sustain fishing is relatively unknown, although the limited information to date suggests most are inherently vulnerable to exploitation. Knowledge of deepwater chondrichthyans life history traits is required to enable effective management of deepwater chondrichthyans, as ...
openaire +2 more sources
PLoS ONE, 2015 BACKGROUND:Living gnathostomes (jawed vertebrates) comprise two divisions, Chondrichthyes (cartilaginous fishes, including euchondrichthyans with prismatic calcified cartilage, and extinct stem chondrichthyans) and Osteichthyes (bony fishes including ...
John A Long +7 more
doaj +1 more source
Ventricular myocardial trabeculation in chondrichthyans. Evolutionary implications [PDF]
, 2019 The formation of trabeculae (trabeculation) in vertebrates occurs during cardiac development in the three structural types of ventricular myocardium, namely, compact, spongy and mixed.
Durán, Ana C. +4 more
core
Chondrichthyan Fauna from the Pirabas Formation, Miocene of Northern Brazil, with Comments on Paleobiogeography [PDF]
Anuário do Instituto de Geociências, 2005 The chondrichthyan fauna from the Pirabas Formation is redescribed. Only thirteen nominal taxa are considered valid. From these taxa, ten were reassigned to extant taxa (Carcharhinus sorrah, Carcharhinus perezii, Galeocerdo cuvier, Rhizoprionodon ...
Márcia Aparecida Fernandes dos Reis
doaj
The Global Threat to Manta and Mobula Rays [PDF]
, 2010 Manta and mobula rays span the tropics of the world and are among the most captivating and charismatic of marine species. However, their survival is severely threatened by growing fisheries pressure driven by demand for the gill rakers that the animals ...
Shawn Heinrichs
core
The braincase and jaws of a Devonian 'acanthodian' and modern gnathostome origins.
, 2009 Modern gnathostomes (jawed vertebrates) emerged in the early Palaeozoic era, but this event remains unclear owing to a scant early fossil record. The exclusively Palaeozoic acanthodians are possibly the earliest gnathostome group and exhibit a mosaic of ...
AM Basden +29 more
core +1 more source
BMC Evolutionary Biology, 2019 Background Chondrichthyans represent a monophyletic group of crown group gnathostomes and are central to our understanding of vertebrate evolution. Like all vertebrates, cartilaginous fishes evolved concretions of material within their inner ears to aid ...
Lisa Schnetz +5 more
doaj +1 more source