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Helodontidae ✝
Source Data |
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Rank | family (PBDB) | ||||||||||||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Chordata : Chondrichthyes : Helodontiformes : Helodontidae | ||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Opinions (PBDB) |
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Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 29 | ||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 359 - 323 Ma Paleozoic | ||||||||||||||||||||||||||||||||||||||||||
Last Recorded Appearance | 260 - 254 Ma Permian | ||||||||||||||||||||||||||||||||||||||||||
Environment | marine (based on Vertebrata) | ||||||||||||||||||||||||||||||||||||||||||
Motility | actively mobile (based on Holocephali) | ||||||||||||||||||||||||||||||||||||||||||
Diet | carnivore (based on Holocephali) | ||||||||||||||||||||||||||||||||||||||||||
Taphonomy | phosphatic (based on Vertebrata) | ||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | R. Zangerl. 1981. Chondrichthyes I: Paleozoic Elasmobranchii. In H.P. Schultze (ed.), Handbook of Paleoichthyology 3a |
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Helodus ✝ genus | listed (PBDB) | 21 | 359 Ma Late/Upper Devonian | 260 Ma Permian |
Synonymy List
Year | Name and Author |
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1981 | Helodontidae Zangerl p. 46 |
2006 | Helodontidae Nelson p. 43 |
References
Zangerl R. (1981) Chondrichthyes I: Paleozoic Elasmobranchii, Handbook of Paleoichthyology 3a |
Nelson J. S. (2006) , Fishes of the world, 4th edition, 1-601 |
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!