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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Gorbyoceras gracile
Taxonomy
Orthoceras gracile was named by Portlock (1843). It is not extant. Its type specimen is GSM 104393 (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 Gorbyoceras gracile by Evans (1993).
It was recombined as Gorbyoceras gracile by Evans (1993).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1843 | Orthoceras gracile Portlock p. 366 figs. 2 Pl. 25 |
| 1993 | Gorbyoceras gracile Evans p. 171 figs. 10, 11, 13 |
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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.
†Gorbyoceras gracile 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: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: base of the Rawtheyan to the top of the Richmondian or 448.80000 to 445.50000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Richmondian | United Kingdom (Northern Ireland) | Gorbyoceras gracile (89261) Orthoceras gracile, Gorbyoceras gracile (type locality: 89260) | |
| Rawtheyan | United Kingdom (Scotland) | Gorbyoceras gracile (89298) |