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Endoceras perannulatum
Taxonomy
Orthoceras perannulatum was named by Portlock (1843). It is not extant. Its type specimen is GSM 103545 (lectotype), a shell. Its type locality is Killey Bridge Fm. locality 1, NE of Pomeroy, which is in a Richmondian offshore mudstone/siltstone in the Killey Bridge Formation of the United Kingdom.
It was recombined as Endoceras perannulatum by Evans (1993).
It was recombined as Endoceras perannulatum by Evans (1993).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1843 | Orthoceras perannulatum Portlock p. 367 figs. 5?, 6 Pl. 25 |
| 1993 | Endoceras perannulatum Evans p. 163 fig. 7 |
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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.
†Endoceras perannulatum Portlock 1843
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: Richmondian or 449.60000 to 445.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Richmondian | United Kingdom (Northern Ireland) | Orthoceras perannulatum, Endoceras perannulatum (type locality: 89260) |