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Geocoma

Description

Geocoma is an extinct genus of brittle stars that lived in the Jurassic. Its fossils are known from Europe.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4874367https://www.gbif.org/species/4874367
PaleoBioDB ID (PBDB)31562https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=31562
Rankgenus
Taxonomy (GBIF)Life : Animalia : Echinodermata : Ophiuroidea : Amphilepidida : Ophiolepididae : Geocoma
Taxonomy (PBDB)Life : Animalia : Echinodermata : Ophiuroidea : Ophiurida : Aplocomidae : Geocoma
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
-Ambulacraria
phylumEchinodermataKlein 1754
subphylumAsterozoavon Zittel 1895
classOphiuroideaGray 1840
orderOphiurida
infraorderChilophiurinaMatsumoto 1915
familyAplocomidaeHess 1965
subfamilyAplocominaeHess and Meyer 2008
genusGeocomad'Orbigny 1850
Scientific NameGeocoma d'Orbigny, 1850
Name Published InOrbigny, A. D. d'. (1849-1852). Prodrome de paléontologie stratigraphique universelle des animaux mollusques et rayonnés faisant suite au cours élémentaire de paléontologie et de géologie stratigraphiques. Paris, Masson. vol. 1 [1849]: lx + 394 pp.; vol. 2 [1850]: 427 pp.; vol. 3 [1852]: 389 pp.
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Geocomagenusbelongs to Ophiurinaestated with evidenceSpencer and Wright, 1966
Geocomagenusbelongs to Ophiuridasecond handSepkoski, 2002
Geocomagenusbelongs to Aplocominaestated with evidenceHess and Meyer, 2008
Status (PBDB)extinct
Taxon Size (PBDB)7
First Recorded Appearance183 - 174 Ma
Jurassic
Last Recorded Appearance151 - 145 Ma
Late Jurassic
Environmentmarine (based on Ophiuroidea)
Motilityslow-moving (based on Ophiuroidea)
Visionblind (based on Ophiuroidea)
Dietdetritivore, suspension feeder (based on Ophiuroidea)
Reproductiondispersal=water,planktonic (based on Echinodermata)
Ontogenyaccretion,addition of parts (based on Echinodermata)
Taphonomyhigh Mg calcite (based on Ophiuroidea)
Primary Reference (PBDB)A. d'Orbigny. 1850. Prodrome du paléontologie stratigraphique universelle des animaux mollusques et rayonnés faisant suite au cours élémentaire de paléontologie et de géologie stratigraphique 1:1-392
Wikipediahttps://en.wikipedia.org/wiki/Geocoma

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Geocoma canjuersensis
species
accepted (GBIF)
listed (PBDB)
2151 Ma
Late Jurassic
151 Ma
Late Jurassic
Geocoma carinata
species
accepted (GBIF)
listed (PBDB)
10166 Ma
Middle Jurassic
151 Ma
Late Jurassic
Geocoma libanotica
species
accepted (GBIF)
listed (PBDB)
Geocoma magna
species
accepted (GBIF)
listed (PBDB)
1183 Ma
Early Jurassic
183 Ma
Early Jurassic
Geocoma planata
species
listed (PBDB)
Geocoma schoentalensis
species
accepted (GBIF)
listed (PBDB)
1170 Ma
Middle Jurassic
170 Ma
Middle Jurassic
Ophiura planata
species
accepted (GBIF)No associated record in PBDB

Synonymy List

YearName and Author
1850Geocoma d'Orbigny p. 381
1966Geocoma Spencer and Wright p. U95
2002Geocoma Sepkoski, Jr.
2008Geocoma Hess and Meyer pp. 30, 32, 35

References

d'Orbigny A. , Prodrome du paléontologie stratigraphique universelle des animaux mollusques et rayonnés faisant suite au cours élémentaire de paléontologie et de géologie stratigraphique 1, 1-392
Spencer W. K., Wright C.W. (1966) Asterozoans, Moore R.C. ed, Treatise on invertebrate paleontology, Echinodermata, University of Kansas Press and the Geological Society of America 3 1, U4-U107
Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Hess H., Meyer C. A. (2008) A new ophiuroid (Geocoma schoentalensis sp. nov.) from the Middle Jurassic of northeastern Switzerland and remarks on the family Aplocomidae Hess 1965., Swiss Journal of Geosciences 101, 29-40
Orbigny, A. D. d'. (1849-1852). Prodrome de paléontologie stratigraphique universelle des animaux mollusques et rayonnés faisant suite au cours élémentaire de paléontologie et de géologie stratigraphiques. Paris, Masson. vol. 1 [1849]: lx + 394 pp.; vol. 2 [1850]: 427 pp.; vol. 3 [1852]: 389 pp. - via World Register of Marine Species
Museum Victoria KEmu database (Oct 2006) - via The Interim Register of Marine and Nonmarine Genera
Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera
Prodr. Paléont., 1, 1849 - via The Interim Register of Marine and Nonmarine Genera
Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera
WoRMS (Nov 2016). - via The Interim Register of Marine and Nonmarine Genera
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!
 
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