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Xenasteridae ✝
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| Rank | family | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF) | Life : Animalia : Echinodermata : Asteroidea : Xenasteridae | |||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Echinodermata : Asteroidea : Pustulosida : Xenasteridae | |||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Xenasteridae | |||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 18 | |||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 409 - 403 Ma Early/Lower Devonian | |||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 409 - 403 Ma Early/Lower Devonian | |||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Echinodermata) | |||||||||||||||||||||||||||||||||||||||
| Motility | slow-moving (based on Asteroidea) | |||||||||||||||||||||||||||||||||||||||
| Vision | limited (based on Asteroidea) | |||||||||||||||||||||||||||||||||||||||
| Diet | carnivore (based on Asteroidea) | |||||||||||||||||||||||||||||||||||||||
| Reproduction | dispersal=water,planktonic (based on Echinodermata) | |||||||||||||||||||||||||||||||||||||||
| Ontogeny | accretion,addition of parts (based on Echinodermata) | |||||||||||||||||||||||||||||||||||||||
| Taphonomy | high Mg calcite (based on Asteroidea) | |||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. W. Gregory. 1899. On Lindstromaster and the classification of Palaeasterids. Geological Magazine 6:341-354 |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Agalmaster ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Eifelaster ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Palaeostella ✝ genus | accepted (GBIF) listed (PBDB) | 2 | 409 Ma Early/Lower Devonian | 409 Ma Early/Lower Devonian | |
| Rhenaster ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Trimeraster ✝ genus | accepted (GBIF) listed (PBDB) | ||||
| Xenaster ✝ genus | accepted (GBIF) listed (PBDB) |
Synonymy List
| Year | Name and Author |
|---|---|
| 1899 | Xenasteridae Gregory p. 346 |
| 1915 | Xenasteridae Schuchert pp. 53, 128 |
| 1916 | Xenasteridae Spencer pp. 99-100 |
| 1965 | Xenasteridae Owen p. 569 |
| 1966 | Xenasteridae Spencer and Wright p. U52 |
| 1989 | Xenasteridae Blake p. 212 |
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!
