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Iocrinus ✝
| Description | Iocrinus is an extinct genus of crinoid (sea lilies and feather stars). It is an early form of crinoid, from the Ordovician rock of North America, England, and Gilwern Hill, Powys in Wales. From Wikipedia article at https://en.wikipedia.org/wiki/Iocrinus, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Source Data |
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| Rank | genus | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF,PBDB) | Life : Animalia : Echinodermata : Crinoidea : Iocrinidae : Iocrinus | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Iocrinus Hall, 1866 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Name Published In | Descr. Crin. silur. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 5 | ||||||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 470 - 461 Ma Middle Ordovician | ||||||||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 450 - 444 Ma Paleozoic | ||||||||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Echinodermata) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Motility | stationary, attached | ||||||||||||||||||||||||||||||||||||||||||||||||
| Vision | blind (based on Crinoidea) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Diet | suspension feeder | ||||||||||||||||||||||||||||||||||||||||||||||||
| Reproduction | dispersal=water,planktonic (based on Echinodermata) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Ontogeny | accretion,addition of parts (based on Echinodermata) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Ecospace Comments | LIFE HISTORY: Approximate length of 15-20 cm according to Brett et al (2008), therefore intermediate level epifaunal. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | high Mg calcite (based on Crinoidea) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Iocrinus |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Heterocrinus subcrassus species | accepted (GBIF) | No associated record in PBDB | |||
| Iocrinus brithdirensis species | accepted (GBIF) | No associated record in PBDB | |||
| Iocrinus llandegleyi ✝ species | accepted (GBIF) listed (PBDB) | 1 | 466 Ma Middle Ordovician | 466 Ma Middle Ordovician | |
| Iocrinus pauli species | accepted (GBIF) | No associated record in PBDB | |||
| Iocrinus subcrassus ✝ species | listed (PBDB) | 16 | 461 Ma Middle Ordovician | 458 Ma Late/Upper Ordovician | |
| Iocrinus trentonensis ✝ species | accepted (GBIF) listed (PBDB) | 9 | 461 Ma Middle Ordovician | 453 Ma Late/Upper Ordovician | |
| Iocrinus whitteryi ✝ species | accepted (GBIF) listed (PBDB) | 1 | 466 Ma Middle Ordovician | 466 Ma Middle Ordovician | |
Synonymy List
| Year | Name and Author |
|---|---|
| 1866 | Iocrinus Hall |
| 1961 | Iocrinus Ramsbottom |
| 1998 | Iocrinus Ausich p. 27 |
| 2002 | Iocrinus Sepkoski, Jr. |
| 2018 | Iocrinus Ausich et al. |
| 1866 | Iocrinus Hall |
| 1961 | Iocrinus Ramsbottom |
| 1998 | Iocrinus Ausich p. 27 |
| 2002 | Iocrinus Sepkoski, Jr. |
| 2018 | Iocrinus Ausich et al. |
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!
