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Isorthis ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4870586	https://www.gbif.org/species/4870586
PaleoBioDB ID (PBDB)	26816	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=26816

Rank

genus

Taxonomy (GBIF,PBDB)

Life : Animalia : Brachiopoda : Rhynchonellata : Orthida : Dalmanellidae : Isorthis

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Bilateria
-	Eubilateria	Ax 1987
-	Protostomia	Grobben 1908
-	Spiralia
superphylum	Lophotrochozoa
-	Lophophorata
phylum	Brachiopoda	Cuvier 1805
subphylum	Rhynchonelliformea	Williams et al. 1996
class	Rhynchonellata	Williams et al. 1996
order	Orthida	Schuchert and Cooper 1932
suborder	Dalmanellidina	Moore 1952
superfamily	Dalmanelloidea	Schuchert 1913
family	Dalmanellidae	Schuchert 1913
subfamily	Isorthinae	Schuchert and Cooper 1931
genus	Isorthis	Kozlowski 1929

Scientific Name

Isorthis Kozlowski, 1929

Name Published In

Palaeont. polonica, 1, 30

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Isorthis	genus	belongs to Isorthinae	stated with evidence	Wright, 1964
Isorthis	genus	belongs to Isorthinae	stated without evidence	Bassett and Cocks, 1974
Isorthis	genus	belongs to Isorthinae	stated with evidence	Hints, 1975
Isorthis	genus	belongs to Isorthidae	stated without evidence	Villas and Cocks, 1996
Isorthis	genus	belongs to Isorthinae	stated with evidence	Jin and Chatterton, 1997
Isorthis	genus	belongs to Orthida	second hand	Sepkoski, 2002
Isorthis	genus	belongs to Isorthinae	stated with evidence	Rubel, 2011

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

461 - 450 Ma
Ordovician

Last Recorded Appearance

393 - 388 Ma
Devonian

Motility

stationary, attached (based on Dalmanellidae)

Vision

blind (based on Rhynchonellata)

Diet

suspension feeder (based on Dalmanellidae)

Taphonomy

intermediate,minor ribbing, minor internal reinforcement

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	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Isorthis (Arcualla) ✝ subgenus	listed (PBDB)		42	443 Ma Silurian	409 Ma Early/Lower Devonian
Isorthis (Isorthis) ✝ subgenus	listed (PBDB)		7	433 Ma Silurian	419 Ma Early/Lower Devonian
Isorthis (Ovalella) ✝ subgenus	listed (PBDB)		21	450 Ma Late/Upper Ordovician	431 Ma Silurian
Isorthis (Protocortezorthis) ✝ subgenus	listed (PBDB)		11	433 Ma Silurian	411 Ma Early/Lower Devonian
Isorthis alpha ✝ species	accepted (GBIF) listed (PBDB)		8	411 Ma Early/Lower Devonian	411 Ma Early/Lower Devonian
Isorthis arcuaria species	accepted (GBIF)	No associated record in PBDB
Isorthis arndellensis species	accepted (GBIF)	No associated record in PBDB
Isorthis bailyi ✝ species	accepted (GBIF) listed (PBDB)		1	450 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Isorthis boreaina species	accepted (GBIF)	No associated record in PBDB
Isorthis crassa ✝ species	listed (PBDB)		6	439 Ma Silurian	427 Ma Silurian
Isorthis estona ✝ species	accepted (GBIF) listed (PBDB)		18	452 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Isorthis festiva ✝ species	accepted (GBIF) listed (PBDB)		7	443 Ma Silurian	411 Ma Early/Lower Devonian
Isorthis loveni ✝ species	listed (PBDB)		4	439 Ma Silurian	431 Ma Silurian
Isorthis mackenziei species	accepted (GBIF)	No associated record in PBDB
Isorthis mediocra ✝ species	accepted (GBIF) listed (PBDB)		10	443 Ma Silurian	443 Ma Silurian
Isorthis microscapha species	accepted (GBIF)	No associated record in PBDB
Isorthis natiscotekia species	accepted (GBIF)	No associated record in PBDB
Isorthis parvulus ✝ species	listed (PBDB)		5	443 Ma Silurian	428 Ma Silurian
Isorthis pygmaea ✝ species	accepted (GBIF) listed (PBDB)		5	423 Ma Silurian	416 Ma Early/Lower Devonian
Isorthis slitensis ✝ species	accepted (GBIF) listed (PBDB)		4	433 Ma Silurian	433 Ma Silurian
Isorthis szajnochai species	accepted (GBIF)	No associated record in PBDB
Orthis canaliculata species	accepted (GBIF)	No associated record in PBDB
Orthis crassa species	accepted (GBIF)	No associated record in PBDB
Orthis loveni species	accepted (GBIF)	No associated record in PBDB

Synonymy List

Year	Name and Author
1929	Isorthis Kozlowski
1964	Isorthis Wright
1974	Isorthis Bassett and Cocks
1975	Isorthis Hints
1996	Isorthis Villas and Cocks p. 574
1997	Isorthis Jin and Chatterton
2000	Isorthis Williams et al. p. 789
2002	Isorthis Sepkoski, Jr.
2011	Isorthis Rubel

References

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

Wright A. D. (1964) The Fauna of the Potrane Limestone, II, Bulletin of the British Museum (Natural History) Geology 9 6, 157-256

Bassett M. G., Cocks L. R. M. (1974) A review of Silurian brachiopods from Gotland, Fossils and Strata 3, 1-56

Hints L. (1975) Ordovician brachiopods Enteletacea of the east baltic area, Eesti NSV Teaduste Akadeemia Geoloogia Institut, 1-119

Villas E., Cocks L. R. M. (1996) The first early Silurian brachiopod fauna from the Iberian Peninsula, Journal of Paleontology 70 4, 571-588

Jin J., Chatterton B. D. E. (1997) Latest Ordovician-Silurian articulate brachiopods and biostratigraphy of the Avalanche Lake area, southwestern District of Mackenzie, Canada, Palaeontographica Canadiana 13, 1-62

Williams A., Carlson S. J., et al (2000) Part H Brachiopoda (revised): Volumes 2 & 3, Linguliformea, Craniiformea, Rhynchonelliformea (part)., Treatise on Invertebrate Paleontology, 1-919

Rubel M. (2011) Silurian brachiopods Dictyonellida, Strophomenida, Productida, Orthotetida, Protorthida and Orthida from Estonia, Fossilia Baltica 4, 1-65

Hallan, J. (2000-current). Biology Catalog. Web compilation accessible at http://bug.tamu.edu/research/collection/hallan/ (accessed June 2012). - via The Interim Register of Marine and Nonmarine Genera

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

Palaeont. polonica, 1, 30 - 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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