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Placopterina

Bivalvia - Ostreida - Pterineidae

Taxonomy
Placopterina was named by Hoare et al. (1978) [Sepkoski's age data: C Mosc-l Sepkoski's reference number: 105].

It was assigned to Pterineidae by Hoare et al. (1978); and to Pterioida by Sepkoski (2002).

Synonymy list
YearName and author
1978Placopterina Hoare et al. pp. 1024 - 1025
2002Placopterina Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassPteriomorphia(Beurlen 1944)
OstreomorphiFerussac 1822
OstreioniFerussac 1822
OstreataFerussac 1822
superorderOstreiformiiFerussac 1822
orderOstreida(FĂ«russac 1822)
suborderMalleidinaGray 1854
familyPterineidae
genusPlacopterina

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
R. D. Hoare et al. 1978Small nearly equivalved moderately inequilateral pterinid with prosocline valves bearing only concentric growth lines.

Description.-Small pteroid shells with small anterior and large posterior auricular areas which are not produced. Hinge line straight. Ligament apparently opisthodetic. No radial ornamentation.