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Eucidaris
| Description | Eucidaris is a genus of cidaroid sea urchins known as slate pencil urchins. They are characterised by a moderately thick test, a usually monocyclic apical disc, perforate and non-crenulate tubercles and nearly straight ambulacra with horizontal pore pairs. The primary spines are few and widely spaced, stout with blunt flat tips and beaded ornamentation and the secondary spines are short and apressed. They originated in the Miocene and extant members of the genus are found in the tropical Indo-Pacific Ocean, East Pacific, Atlantic Ocean and Caribbean Sea. From Wikipedia article at https://en.wikipedia.org/wiki/Eucidaris, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Rank | genus | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF) | Life : Animalia : Echinodermata : Echinoidea : Cidaroida : Cidaridae : Eucidaris | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomy (PBDB) | Life : Animalia : Echinodermata : Echinoidea : Cidaroida : Cidaridae : Eucidaris | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Eucidaris Pomel, 1883 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Name Published In | Pomel, Auguste N. 1883. Classification méthodique et genera des échinides vivants et fossiles. A. Jourdan, Alger. | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extant | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 4 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Extant Size (PBDB) | 1 (25%) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 56.0 - 53.0 Ma Eocene | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Cidaroida) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Motility | slow-moving (based on Cidaroida) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Vision | limited (based on Echinoidea) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Diet | grazer, omnivore (based on Cidaroida) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Reproduction | dispersal=water,planktonic (based on Cidaroida) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Ontogeny | accretion,addition of parts (based on Echinodermata) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | high Mg calcite (based on Cidaroida) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 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) | マツカサウニ | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Eucidaris |
External Images
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Eucidaris australiae species | accepted (GBIF) | No associated record in PBDB | |||
| Eucidaris coralloides species | accepted (GBIF) | No associated record in PBDB | |||
| Eucidaris galapagensis species | accepted (GBIF) | No associated record in PBDB | |||
| Eucidaris metularia ✝ species | accepted (GBIF) listed (PBDB) | 2 | 16.0 Ma Miocene | 5.33 Ma Miocene | |
| Eucidaris strobilata species | accepted (GBIF) | No associated record in PBDB | |||
| Eucidaris strombilata species | accepted (GBIF) | No associated record in PBDB | |||
| Eucidaris thouarsii ✝ species | accepted (GBIF) listed (PBDB) | 14 | 23.0 Ma Miocene | 0.13 Ma Pleistocene | |
| Eucidaris tribuloides species | accepted (GBIF) | No associated record in PBDB | |||
Obsolete Names
| Name | Source | Taxon Rank | Taxonomy |
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| Gymnocidaris A.Agassiz, 1863 | GBIF | genus | Animalia : Echinodermata : Echinoidea : Cidaroida : Cidaridae : Gymnocidaris |
| Eucidarus | GBIF | genus | Animalia : Echinodermata : Echinoidea : Cidaroida : Cidaridae : Eucidarus |
Synonymy List
| Year | Name and Author |
|---|---|
| 1887 | Cidaris (Eucidaris) Döderlein |
| 1938 | Eucidaris Grant and Hertlein p. 7 |
| 1966 | Eucidaris Fell p. U333 |
| 1966 | Eucidaris Nisiyama p. 168 |
| 2002 | Eucidaris Sepkoski, Jr. |
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!
