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Leptaena kentuckiana
Taxonomy
Leptaena kentuckiana was named by Pope (1982). Its type specimen is USNM 245367, a valve (ventral valve), and it is a 3D body fossil. Its type locality is USGS 5136-CO. abandoned Clara Wilham Quarry, which is in a Maysvillian open shallow subtidal packstone/mudstone in the Reba Formation of Kentucky.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Leptaena kentuckiana Pope pp. L24 - L26 figs. Plate 8, figures 1-5 |
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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.
†Leptaena kentuckiana Pope 1982
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. K. Pope 1982 | Large, thin-shelled leptaenid with free margin uniformly rounded. Cardinal angles orthogonal to alate. Geniculation at about 15 mm from beak, not preceded by a prominent depression or ridge. Costellae coarse and wavering; rugae discontinuous, moderate in number and height. Diductor muscle scar not bordered by a ridge. |
Measurements
No measurements are available
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| Source: g = genus, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004, Hendy et al. 2009 | |||||
Age range: Maysvillian or 450.20000 to 449.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maysvillian | USA (Kentucky) | Leptaena kentuckiana (type locality: 184638) |