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Schizodus bifidus

Bivalvia - Trigoniida - Schizodidae

Taxonomy
Schizodus bifidus was named by Ciriacks (1963). Its type specimen is USNM 140490, a valve (Partially reconstructed right valve), and it is not a trace fossil. Its type locality is Hidden Pastures (Franson Mb), Big Sheep Canyon, Beaverhead County, which is in a Wuchiapingian shallow subtidal limestone in the Park City Formation of Montana.

Synonymy list
YearName and author
1963Schizodus bifidus Ciriacks p. 59 figs. Pl 10, figs 13-15
1975Schizodus bifidus Newell and Boyd p. 107 fig. 44

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassHeteroconchia(Gray 1854)
—UniomorphiGray 1854
—UnioniGray 1854
—UnionataGray 1854
orderTrigoniida(Dall 1889)
superfamilyTrigonioidea(Lamarck 1819)
familySchizodidae
genusSchizodus
speciesbifidus

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Schizodus bifidus Ciriacks 1963
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
valve height421.811.342.221.913.0

Composition: aragonitec
Locomotion: facultatively mobileo
Life habit: infaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 12:34:20
Modified: 2004-02-28 14:34:20
Source: o = order, c = class
Reference: Aberhan et al. 2004

Age range: base of the Kungurian to the top of the Capitanian or 279.30000 to 259.51000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Permian298.9 - 251.902USA (Wyoming) Schizodus bifidus (11230)
Leonardian286.0 - 273.01USA (Utah) Schizodus bifidus (11272)
Leonardian286.0 - 273.01USA (Wyoming) Schizodus bifidus (11231)
Kungurian279.3 - 272.3USA (Wyoming) Schizodus bifidus (81512)
Kungurian279.3 - 272.3USA (Utah) Schizodus bifidus (105281)
Roadian272.3 - 268.8USA (Idaho) Schizodus bifidus (11285)
Wordian266.9 - 264.28USA (Montana) Schizodus bifidus (11276)
Capitanian264.28 - 259.51USA (Montana) Schizodus bifidus (83005)
Capitanian264.28 - 259.51USA (Wyoming) Schizodus bifidus (105272)
Wuchiapingian259.9 - 254.17USA (Wyoming) Schizodus bifidus (11227 11228 105357)
Wuchiapingian259.9 - 254.17USA (Montana) Schizodus bifidus (type locality: 105277)
Wuchiapingian259.9 - 254.17USA (Utah) Schizodus bifidus (11232)
Lopingian259.9 - 252.17USA (Wyoming) Schizodus bifidus (87294 95799 105344)