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Squatiniformes
Description | The angelsharks are a group of sharks in the genus Squatina of the family Squatinidae. They commonly inhabit sandy seabeds close to 150m in depth. Many species are now classified as critically endangered by the International Union for Conservation of Nature. Once common over large areas of the Northeast Atlantic from Norway, Sweden, Morocco, and the Canary Islands, to the Mediterranean and Black Seas, there is now significant fishing pressure which has resulted in significant population declines. From Wikipedia article at https://en.wikipedia.org/wiki/Squatiniformes, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Source Data |
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Rank | order | ||||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomy (GBIF) | Life : Animalia : Chordata : Elasmobranchii : Squatiniformes | ||||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Chordata : Chondrichthyes : Squatiniformes | ||||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Scientific Name | Squatiniformes | ||||||||||||||||||||||||||||||||||||||||||||||||||
Opinions (PBDB) |
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Status (PBDB) | extant | ||||||||||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 24 | ||||||||||||||||||||||||||||||||||||||||||||||||||
Extant Size (PBDB) | 4 (17%) | ||||||||||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 164 - 157 Ma Jurassic | ||||||||||||||||||||||||||||||||||||||||||||||||||
Environment | marine (based on Vertebrata) | ||||||||||||||||||||||||||||||||||||||||||||||||||
Motility | actively mobile | ||||||||||||||||||||||||||||||||||||||||||||||||||
Diet | carnivore | ||||||||||||||||||||||||||||||||||||||||||||||||||
Taphonomy | phosphatic (based on Vertebrata) | ||||||||||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | ||||||||||||||||||||||||||||||||||||||||||||||||||
Common Name(s) | Havsängelartade Fiskar, Havsängelartade Hajar, Zee-engels, カスザメ | ||||||||||||||||||||||||||||||||||||||||||||||||||
Wikipedia | https://en.wikipedia.org/wiki/Squatiniformes |
External Images
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Pseudorhinidae ✝ family | accepted (GBIF) listed (PBDB) | 4 | 161 Ma Jurassic | 156 Ma Jurassic | |
Squatinidae family | accepted (GBIF) listed (PBDB) | Angel Shark | 153 | 164 Ma Middle Jurassic | 0 Ma Extant |
Synonymy List
Year | Name and Author |
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1926 | Squatiniformes Buen |
1966 | Squatiniformes Cassier p. 57 |
1992 | Squatiniformes Long p. 20 |
1993 | Squatiniformes Biddle p. 199 |
2001 | Squatiniformes Peng et al. p. 10 |
2001 | Squatiniformes Purdy et al. p. 97 |
Year | Name and Author |
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2002 | Squatiniformes Sepkoski, Jr. |
2006 | Squatiniformes Underwood p. 234 |
2009 | Squatiniformes Cicimurri and Knight p. 629 |
2011 | Squatiniformes Long p. 242 |
2018 | Squatiniformes Kent p. 60 |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!