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Taxonomy
Plesiopinna pampeana was named by Griffin et al. (2008). Its type specimen is GHUNLPam 810, a shell, and it is a 3D body fossil. Its type locality is Barda Baya 1, which is in a Maastrichtian offshore siltstone in the Jagüel Formation of Argentina.
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Plesiopinna pampeana Griffin et al. p. 148 |
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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.
†Plesiopinna pampeana Griffin et al. 2008
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Griffin et al. 2008 | Shell trigonal to ham-shaped; tear-shaped section; anterior ventral margin concave; dorsal margin straight; postumbonal keel very well defined and clearly differentiated from the rest of the shell surface, which is rather flat; ridge curved, describing an arch following ventral margin from um-bonal area to posterior ventral sector of shell margin; shell ornamentation of 12 strong and flat radial ribs on dorsal flank, separated by widening intercostal spaces, which at posterior margin reach up to threetimes the width of ribs. |