Topic
Squaliformes
About: Squaliformes is a research topic. Over the lifetime, 126 publications have been published within this topic receiving 2680 citations.
Papers published on a yearly basis
Papers
TL;DR: Comparative studies on living sharks and rays combined with new data on fossil sharks suggests that the living groups ultimately stem from a common ancestral group of “neoselachian” sharks with many modern characters.
Abstract: A set of hypotheses are developed for the origin of living sharks and rays and the interrelationships of their major groups, using some methods of cladistic analysis to relate groups with shared derived characters. Comparative studies on living sharks and rays combined with new data on fossil sharks suggests that the living groups ultimately stem from a common ancestral group of “neoselachian” sharks with many modern characters. Reinterpretations of “amphistyly” in modern sharks is presented on new data.
535 citations
Book•
1 Jan 1988
TL;DR: Heterodontiformes, Hexanchiformes Lamniformes Squaliformes Rajiformes; Salmoniformes Salmonidei Argentinoidei Alepocephaloidei Stomioidei Tetradontoidei Synbranchiforms; and so on.
Abstract: AGNATHA: Elasmobranchii heterodontiformes Hexanchiformes Lamniformes Squaliformes Rajiformes HOLOCEPHALI: Chimaeriformes OSTEICHTHYES: Acipenseriformes Clupeiformes Elopiformes Anguilloformes Anguiloidei Saccopharyngoidei Notacanthiformes Salmoniformes Salmonidei Argentinoidei Alepocephaloidei Stomioidei Tetradontoidei Synbranchiformes Bibliography Indexes.
495 citations
TL;DR: This checklist represents the first global checklist of chondrichthyans to include information on maximum size, geographic and depth distributions, as well as comments on taxonomically problematic species and recent and regularly overlooked synonymizations.
Abstract: An annotated checklist of the chondrichthyan fishes (sharks, batoids and chimaeras) of the world is presented. As of 7 November 2015, the number of species totals 1188, comprising 16 orders, 61 families and 199 genera. The checklist includes nine orders, 34 families, 105 genera and 509 species of sharks; six orders, 24 families, 88 genera and 630 species of batoids (skates and rays); one order, three families, six genera and 49 species of holocephalans (chimaeras). The most speciose shark orders are the Carcharhiniformes with 284 species, followed by the Squaliformes with 119. The most species-rich batoid orders are the Rajiformes with 285 species and the Myliobatiformes with 210. This checklist represents the first global checklist of chondrichthyans to include information on maximum size, geographic and depth distributions, as well as comments on taxonomically problematic species and recent and regularly overlooked synonymizations. Furthermore, a detailed analysis of the biogeographical diversity of the species across 10 major areas of occurrence is given, including updated figures for previously published hotspots of chondrichthyan biodiversity, providing the detailed numbers of chondrichthyan species per major area, and revealing centres of distribution for several taxa.
372 citations
TL;DR: A new species of Squatina, S. david, is described from the Colombian Caribbean, which differs from all the western North Atlantic angel sharks by lacking a mid-dorsal line of thorns or enlarged dermal denticles, and each nasal flap with two rod-like barbels.
Abstract: A new species of Squatina, S. david, is described from the Colombian Caribbean. The new species differs from all the western North Atlantic angel sharks by lacking a mid-dorsal line of thorns or enlarged dermal denticles, by having an eye-spiracle distance larger than 1.5 times eye diameter, and each nasal flap with two rod-like barbels. Coloration is grayish to brownish yellow, males are dark-spotted, females have abundant whitish spots. Squatina david is nested within the American clade of angel sharks, being the sister species to the Brazilian species.
170 citations
TL;DR: Speciation analysis demonstrated that more than 90% mercury was bound in muscle tissue as MMHg with higher percentages observed in sharks species occupying deeper environments, and the habitat effect on mercury concentration in sharks seems less clear.
166 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 8 |
| 2020 | 11 |
| 2019 | 7 |
| 2018 | 6 |
| 2017 | 7 |
| 2016 | 12 |