Orthothecida ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	7669	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=7669

Rank

order (PBDB)

Taxonomy (PBDB)

Life : Animalia : Hyolitha : Orthothecida

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	Hyolitha	Marek 1963
order	Orthothecida	Marek 1966

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Orthothecida	order	belongs to Hyolitha	stated without evidence	Azmi and Pancholi, 1983
Orthothecida	order	belongs to Orthothecimorpha	second hand	Sepkoski, 2002
Orthothecida	order	belongs to Hyolitha	stated without evidence	Malinky and Racheboeuf, 2011

Status (PBDB)

extinct

Taxon Size (PBDB)

139

First Recorded Appearance

541 - 530 Ma
Cambrian

Last Recorded Appearance

393 - 388 Ma
Devonian

Environment

marine (based on Hyolitha)

Motility

stationary (based on Hyolitha)

Vision

blind (based on Hyolitha)

Diet

suspension feeder (based on Hyolitha)

Taphonomy

aragonite (based on Hyolitha)

Primary Reference (PBDB)

L. Marek. 1966. New hyolithid genera from the Ordovician of Bohemia. Casopis Narodního Musea, oddíl prírodovedny 135:89-92

Fossil Distribution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Allathecidae ✝ family	listed (PBDB)	80	541 Ma Cambrian	516 Ma Cambrian
Circothecidae ✝ family	accepted (GBIF) listed (PBDB)	490	541 Ma Cambrian	513 Ma Cambrian
Gracilithecidae ✝ family	listed (PBDB)	11	530 Ma Cambrian	513 Ma Cambrian
Novitatidae ✝ family	listed (PBDB)	4	513 Ma Cambrian	501 Ma Cambrian
Orthothecidae ✝ family	listed (PBDB)	38	541 Ma Cambrian	419 Ma Early/Lower Devonian
Tetrathecidae ✝ family	listed (PBDB)	1	513 Ma Cambrian	513 Ma Cambrian
Aldanotheca ✝ genus	listed (PBDB)
Ancheilotheca ✝ genus	listed (PBDB)
Bolitheca ✝ genus	listed (PBDB)
Brevitheca ✝ genus	listed (PBDB)
Bucanotheca ✝ genus	listed (PBDB)	1	541 Ma Cambrian	541 Ma Cambrian
Carinitheca ✝ genus	listed (PBDB)
Chelsonella ✝ genus	listed (PBDB)
Contitheca ✝ genus	listed (PBDB)	7	516 Ma Cambrian	507 Ma Cambrian
Curtitheca ✝ genus	listed (PBDB)
Devoniotheca ✝ genus	listed (PBDB)
Ebianotheca ✝ genus	listed (PBDB)	1	541 Ma Cambrian	541 Ma Cambrian
Eogloborilus ✝ genus	listed (PBDB)	1	541 Ma Cambrian	541 Ma Cambrian
Eonovitatus ✝ genus	listed (PBDB)	3	541 Ma Cambrian	520 Ma Cambrian
Girvanolithes ✝ genus	listed (PBDB)	3	458 Ma Late/Upper Ordovician	456 Ma Late/Upper Ordovician
Grandicornus ✝ genus	listed (PBDB)
Hexitheca ✝ genus	listed (PBDB)	3	505 Ma Cambrian	505 Ma Cambrian
Inflaticornus ✝ genus	listed (PBDB)
Isititheca ✝ genus	listed (PBDB)
Lophotheca ✝ genus	listed (PBDB)	24	541 Ma Cambrian	530 Ma Cambrian
Malykanotheca ✝ genus	listed (PBDB)
Minitheca ✝ genus	listed (PBDB)
Mooritheca ✝ genus	listed (PBDB)
Neobactrotheca ✝ genus	listed (PBDB)
Nephrotheca ✝ genus	listed (PBDB)	4	505 Ma Cambrian	461 Ma Middle Ordovician
Nikatheca ✝ genus	listed (PBDB)	4	541 Ma Cambrian	530 Ma Cambrian
Novitatus ✝ genus	listed (PBDB)
Orthotheca ✝ genus	listed (PBDB)	38	530 Ma Cambrian	393 Ma Early/Lower Devonian
Panitheca ✝ genus	listed (PBDB)
Petasotheca ✝ genus	listed (PBDB)	5	530 Ma Cambrian	516 Ma Cambrian
Plicitheca ✝ genus	listed (PBDB)
Probactrotheca ✝ genus	listed (PBDB)
Renitheca ✝ genus	listed (PBDB)
Tcharatheca ✝ genus	listed (PBDB)
Tchuranitheca ✝ genus	listed (PBDB)	1	530 Ma Cambrian	530 Ma Cambrian
Tetratheca ✝ genus	listed (PBDB)	2	520 Ma Cambrian	516 Ma Cambrian

Synonymy List

Year	Name and Author
1966	Orthothecida Marek
1983	Orthothecida Azmi and Pancholi p. 367
2002	Orthothecida Sepkoski, Jr.
2011	Orthothecida Malinky and Racheboeuf

References

Marek L. (1966) New hyolithid genera from the Ordovician of Bohemia, Casopis Narodního Musea, oddíl prírodovedny 135, 89-92

Azmi R. J., Pancholi V. P. (1983) Early Cambrian (Tommotian) conodonts and other shelly microfauna from the upper Krol of Mussoorie Syncline, Garhwal Lesser Himalaya with remarks on the Precambrian-Cambrian boundary, Himalayan Geology 11, 360-372

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

Malinky J.M., Racheboeuf P.R. (2011) New Hyolitha from the Devonian of Bolivia, Journal of Paleontology 85 6, 1077-1088

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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