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Morphology Ecology and taphonomy   Age range and collections

Pillucina

Bivalvia - Lucinida - Lucinidae

Taxonomy
Pillucina was named by Pilsbry (1921) [Sepkoski's age data: T Plio R]. It is extant.

It was assigned to Lucininae by Cox et al. (1969); to Veneroida by Sepkoski (2002); and to Lucinidae by Glover and Taylor (2007).

Synonyms
Synonymy list
YearName and author
1921Pillucina Pilsbry p. 382
1930Sydlorina Iredale
1969Pillucina Cox et al. p. 499
1969Pillucina (Sydlorina) Cox et al. p. 499
2002Pillucina Sepkoski, Jr.
2007Pillucina Glover and Taylor p. 158

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classBivalvia
Eubivalvia
RankNameAuthor
subclassAutobranchia(Groblen 1894)
infraclassHeteroconchia(Cox 1960)
CardiomorphiFerussac 1822
CardioniFerussac 1822
LucinidiaGray 1854
orderLucinida(Stoliczka 1871)
superfamilyLucinoideaFleming 1828
familyLucinidaeFleming 1828
genusPillucinaPilsbry 1921

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
E. A. Glover and J. D. Taylor 2007Shells small (H to 14 mm), inflated, sculpture of fi ne to broad radial ribs that often bifurcate, crossed by fine, low, commarginal lamellae. Sculpture usually more prominent on anterior and posterior parts of shell. Hinge with two cardinal teeth in left valve and a single cardinal tooth in right valve. Posterior lateral tooth present in both valves, anterior lateral tooth present or absent. Ligament internal, located on elongate resilifer that widens to the posterior. Anterior adductor muscle scar short and detached from pallial line for about 1/4-1/2 of length. Inner shell margin fi nely to coarsely crenulate.