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Chesapecten
Taxonomy
Chesapecten was named by Ward and Blackwelder (1975) [Sepkoski's age data: T Mi-l-u T Plio Sepkoski's reference number: 985].
It was assigned to Chlamydinae by Ward and Blackwelder (1975), del Rio (1992); to Pectinidae by Vokes (1980), Ward (1992); and to Pterioida by Sepkoski (2002).
It was assigned to Chlamydinae by Ward and Blackwelder (1975), del Rio (1992); to Pectinidae by Vokes (1980), Ward (1992); and to Pterioida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1975 | Chesapecten Ward and Blackwelder p. 7 |
| 1980 | Chesapecten Vokes p. 229 |
| 1992 | Chesapecten Ward p. 68 |
| 1992 | Chesapecten del Rio p. 45 |
| 2002 | Chesapecten Sepkoski |
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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.
G. †Chesapecten Ward and Blackwelder 1975
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Subg. †Chesapecten (Chesapecten) Ward 1992
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†Chesapecten (Chesapecten) covepointensis Ward 1992
†Chesapecten (Chesapecten) middlesexensis Ward 1992
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†Chesapecten (Chesapecten) middlesexensis middlesexensis Mansfield 1936
†Chesapecten (Chesapecten) monicae Ward 1992
†Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975
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Invalid names: Pecten madisonius Conrad 1840 [replaced]
Subg. †Chesapecten (Christinapecten) Ward 1992
†Chesapecten coccymelus Dall 1898
†Chesapecten jeffersonius septenarius Say 1824
†Chesapecten madisonius Say 1824
†Chesapecten middlesexensis Mansfield 1936
†Chesapecten patagonensis d'Orbigny 1842
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Invalid names: Chesapecten crassus del Rio 1992 [synonym]
†Chesapecten santamaria Tucker 1934
†Chesapecten sayanus Dall 1898
†Chesapecten skiptonensis Mansfield 1936
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. W. Ward and B. W. Blackwelder 1975 | This genus is characterized by its generally large size, the extreme reduction of cardinal crura, the scabrous sculpture over the entire exterior of the valves, and the greater convexity of the left valve. |