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Ristnacrinus

Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4873709https://www.gbif.org/species/4873709
PaleoBioDB ID (PBDB)31981https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=31981
Rankgenus
Taxonomy (GBIF,PBDB)Life : Animalia : Echinodermata : Crinoidea : Iocrinidae : Ristnacrinus
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
-Ambulacraria
phylumEchinodermataKlein 1754
subphylumCrinozoaMatsumoto 1929
classCrinoideaMiller 1821
subclassPentacrinoideaJaekel 1918
infraclassInadunata
-Disparida
familyIocrinidaeMoore and Laudon 1943
genusRistnacrinusÖpik 1934
Scientific NameRistnacrinus Öpik, 1934
Name Published InActa Comm. Univ. Tartu, 27, no. 8
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Ristnacrinusgenusbelongs to Eustenocrinidaestated with evidenceDonovan, 1984
Ristnacrinusgenusbelongs to Iocrinidaestated with evidenceDonovan, 1985
Ristnacrinusgenusbelongs to Eustenocrinidaestated with evidenceAusich, 1998
Ristnacrinusgenusbelongs to Disparidasecond handSepkoski, 2002
Ristnacrinusgenusbelongs to Iocrinidaestated with evidenceAusich et al., 2015
Status (PBDB)extinct
Taxon Size (PBDB)3
First Recorded Appearance461 - 456 Ma
Ordovician
Last Recorded Appearance450 - 443 Ma
Paleozoic
Environmentmarine (based on Echinodermata)
Motilitystationary, attached (based on Disparida)
Visionblind (based on Crinoidea)
Dietsuspension feeder (based on Disparida)
Reproductiondispersal=water,planktonic (based on Echinodermata)
Ontogenyaccretion,addition of parts (based on Echinodermata)
Taphonomyhigh 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

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Ristnacrinus altobasalis
species
accepted (GBIF)No associated record in PBDB
Ristnacrinus marinus
species
accepted (GBIF)
listed (PBDB)
33461 Ma
Middle Ordovician
458 Ma
Late/Upper Ordovician
Ristnacrinus oepiki
species
accepted (GBIF)
listed (PBDB)
1461 Ma
Middle Ordovician
461 Ma
Middle Ordovician
Ristnacrinus svedasensis
species
accepted (GBIF)No associated record in PBDB

Synonymy List

YearName and Author
1934Ristnacrinus Opik
1984Ristnacrinus Donovan
1985Ristnacrinus Donovan
1998Ristnacrinus Ausich p. 25
2002Ristnacrinus Sepkoski, Jr.
2015Ristnacrinus Ausich et al.

References

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Donovan S. K. (1984) Ramseyocrinus and Ristnacrinus from the Ordovician of Britain, Palaeontology 27, 623-634
Donovan S. K. (1985) Ristnacrinus and the oldest myelodactylid from the Ashgill Boda Limestone of Sweden, Geologiska Föreningens i Stockholm Förhandlingar 106, 347-356
Ausich W. I. (1998) Phylogeny of Arenig to Caradoc crinoids (Phylum Echinodermata) and suprageneric classification of the Crinoidea, The University of Kansas Paleontological Contributions, n. s. 9, 1-36
Ausich W. I., Rozhnov S. V., et al (2015) Iocrinid Crinoids from the Ordovician of the Baltic Region, Estonia, Paleontological Journal 49 2, 145-152
Acta Comm. Univ. Tartu, 27, no. 8 - 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
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
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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