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Schizodus ovatus

Bivalvia - Trigoniida - Schizodidae

Synonymy list
YearName and author
1858Axinus (Schizodus) ovatus Meek and Hayden p. 262
1940Schizodus ovatus Newell

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassHeteroconchia(Cox 1960)
UniomorphiGray 1854
UnioniGray 1854
UnionataGray 1854
orderTrigoniida(Dall 1889)
superfamilyTrigonioideaLamarck 1819
familySchizodidae
genusSchizodus
speciesovatus()

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.

Diagnosis
ReferenceDiagnosis
F. B. Meek and F.V. Hayden 1858Shell ovate, most gibbous slightly in advance of the middle; anterior extremity broader than the other, somewhat narrowly rounded; posterior end narrow and compressed, obliquely truncate above, sub-angular below. Base semiovate in outline, the most prominent part being in advance of the middle; cardinal edge very short, straight and horizontal, meeting the obliquely truncate posterior margin at an angle of about one hundred and thirty degrees. Beaks located slightly in advance of the middIe, elevated, and incurved at right angles to the hinges, rather distinctly angular down the posterior slopes and obliquely towards the lower part of the posterior extremity. Surface unknown. Length 0.65 inch; heighth 0 45 inch; transverse diameter of the two valves 0-20 inch.