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Isocrinus

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	7235332	https://www.gbif.org/species/7235332
PaleoBioDB ID (PBDB)	32612	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=32612

Rank

genus

Taxonomy (GBIF)

Life : Animalia : Echinodermata : Isocrinus

Taxonomy (PBDB)

Life : Animalia : Echinodermata : Crinoidea : Isocrinida : Isocrinidae : Isocrinus

Taxonomic Status (GBIF)

doubtful

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Triploblastica	Lankester 1877
-	Nephrozoa	Jondelius et al. 2002
-	Deuterostomia	Grobben 1908
-	Ambulacraria
phylum	Echinodermata	Klein 1754
subphylum	Crinozoa	Matsumoto 1929
class	Crinoidea	Miller 1821
subclass	Pentacrinoidea	Jaekel 1918
infraclass	Inadunata
-	Cladida
-	Eucladida	Wright 2017
infraorder	Articulata
order	Isocrinida	Sieverts-Doreck 1952
suborder	Isocrinina	Gilsén
family	Isocrinidae	Gislén 1924
subfamily	Isocrininae	Gislen 1924
genus	Isocrinus	Phillips 1841

Scientific Name

Isocrinus Phillips, 1841

Name Published In

Fig. palaeoz. Foss. Cornwall

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Isocrinus	genus	belongs to Pentacrinidae	stated without evidence	Clark and Twitchell, 1915
Isocrinus	genus	belongs to Isocrinidae	stated without evidence	Moore and Vokes, 1953
Isocrinus	genus	belongs to Isocrinidae	stated with evidence	Oji, 1990
Isocrinus	genus	belongs to Isocrinida	second hand	Sepkoski, 2002
Isocrinus	genus	belongs to Isocrinidae	stated without evidence	Donovan et al., 2005
Isocrinus	genus	belongs to Isocrininae	stated with evidence	Hess and Gale, 2010

Status (PBDB)

extant

Taxon Size (PBDB)

Extant Size (PBDB)

2 (18%)

First Recorded Appearance

251 - 247 Ma
Early/Lower Triassic

Environment

marine (based on Echinodermata)

Motility

stationary, attached (based on Isocrinidae)

Vision

blind (based on Crinoidea)

Diet

suspension feeder (based on Isocrinidae)

Reproduction

dispersal=water,planktonic (based on Echinodermata)

Ontogeny

accretion,addition of parts (based on Echinodermata)

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

Fossil Distribution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Isocrinus californicus ✝ species	accepted (GBIF) listed (PBDB)	4	237 Ma Middle Triassic	232 Ma Late/Upper Triassic
Isocrinus granosus ✝ species	accepted (GBIF) listed (PBDB)	1	93.9 Ma Late/Upper Cretaceous	93.9 Ma Late/Upper Cretaceous
Isocrinus knighti ✝ species	accepted (GBIF) listed (PBDB)	2	168 Ma Middle Jurassic	168 Ma Middle Jurassic
Isocrinus legeri ✝ species	listed (PBDB)	5	112 Ma Early/Lower Cretaceous	105 Ma Early/Lower Cretaceous
Isocrinus nehalemensis ✝ species	accepted (GBIF) listed (PBDB)	4	38.0 Ma Eocene	33.9 Ma Oligocene
Isocrinus oregonensis ✝ species	accepted (GBIF) listed (PBDB)	4	38.0 Ma Eocene	38.0 Ma Eocene
Isocrinus pendulus species	listed (PBDB)			0 Ma Extant
Isocrinus propinquus ✝ species	listed (PBDB)	9	242 Ma Middle Triassic	232 Ma Late/Upper Triassic
Isocrinus psilonoti ✝ species	listed (PBDB)	1	209 Ma Late/Upper Triassic	201 Ma Early Jurassic
Isocrinus wyomingensis ✝ species	accepted (GBIF) listed (PBDB)	1	168 Ma Middle Jurassic	168 Ma Middle Jurassic

Synonymy List

Year	Name and Author
1836	Isocrinus Meyer in Agassiz p. 57
1915	Isocrinus Clark and Twitchell p. 21
1953	Isocrinus Moore and Vokes p. 122
1990	Isocrinus Oji p. 425
2002	Isocrinus Sepkoski, Jr.
2005	Isocrinus Donovan et al. p. 97
2010	Isocrinus Hess and Gale p. 431

References

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560

Clark W. B., Twitchell M. W. (1915) The Mesozoic and Cenozoic Echinodermata of the United States, United States Geological Survey Bulletin 54, 1-341

Moore R. C., Vokes H. E. (1953) Lower Tertiary crinoids from Northwestern Oregon, Geological Survey Professional Paper 233 E, 113-147

Oji T. (1990) Miocene Isocrinidae (stalked crinoids) from Japan and their biogeographic implication, Transactions and Proceedings of the Palaeontological Society of Japan 157, 412-429

Donovan S. K., Portell R. W., et al (2005) Lower Miocene echinoderms of Jamaica, West Indies, Scripta Geologica 129, 91-135

Hess H., Gale A. S. (2010) Crinoids from the Shenley Limestone (Albian) of Leighton Buzzard, Bedfordshire, UK, Journal of Systematic Palaeontology 8 3, 427-447

NZ cross ref or inferred from publ. title - 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

as per family - via The Interim Register of Marine and Nonmarine Genera

Fig. palaeoz. Foss. Cornwall - 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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