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Paulinea
Taxonomy
Paulinea was named by Cope (1996) [Sepkoski's age data: O Aren-l Sepkoski's reference number: 1238]. It is not extant.
It was assigned to Praenuculidae by Cope (1996); and to Nuculoida by Sepkoski (2002).
It was assigned to Praenuculidae by Cope (1996); and to Nuculoida by Sepkoski (2002).
Species lacking formal opinion data
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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. †Paulinea Cope 1996
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. C. W. Cope 1996 | Moderately inflated praenuculids with shape ventral to hinge semicircular to subcircular and prominent, generally blunt umbones within anterior half of shell, not strongly curved over hinge-plate. Hinge-line with graded series of peg-like taxodont teeth smaller beneath umbones and increasing in size outwards (gradidentate); hinge plate curved ventrally anteriorly and posteriorly. Anterior adductor circular, rather shallowly inserted, with dorsally situated pedal retractor scar visible in some; posterior adductor very shallowly inserted, larger, subcircular, often not discernible. Exterior of shell smooth or with occasional strong growth increments. Ventral margin of shell very thin. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Meyer et al. 2009 | |||||
Age range: Moridunian or 477.10000 to 473.80000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Moridunian | United Kingdom (Wales) | P. parva (87601) |