| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Retrotornoceras alobatum
Taxonomy
Retrotornoceras alobatum was named by House (2002). It is not extant. Its type locality is Waterside Cove, which is in a Frasnian marine horizon in the United Kingdom. It is the type species of Retrotornoceras.
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Retrotornoceras alobatum House |
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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.
†Retrotornoceras alobatum House 2002
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 3.70 | 3.60 | 3.80 | 3.70 | 0.141 | |
| shell diameter | 2 | 6.62 | 6.00 | 7.30 | 6.65 | 0.919 | |
| shell inflation | 2 | 0.995 | 0.900 | 1.10 | 1.00 | 0.141 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Frasnian or 375.20000 to 372.15000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Frasnian | United Kingdom (England) | Retrotornoceras alobatum (type locality: 135957) |