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Mollistephanus planulatus
Taxonomy
Docidoceras planulatum was named by Buckman (1921). Its type specimen is (BGS GSM32062, a shell, and it is a 3D body fossil. Its type locality is Bradford Abbas, Fossil Bed (Buckman), which is in a Bajocian carbonate limestone in the Aston Limestone Formation of the United Kingdom.
It was recombined as Mollistephanus planulatus by Chandler and Dietze (2004).
It was recombined as Mollistephanus planulatus by Chandler and Dietze (2004).
Synonymy list
| Year | Name and author |
|---|---|
| 1921 | Docidoceras planulatum Buckman figs. pI. 264, figs 1-2 |
| 2004 | Mollistephanus planulatus Chandler and Dietze p. 223 figs. 2.3a, b |
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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.
†Mollistephanus planulatus Buckman 1921
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. B. Chandler and V. Dietze 2004 | A small stephanoceratid species with characters intermediate between Riccardiceras and typical Mollistephanus. The morphology is rather cadiconic and the whorl breadth is narrow giving the specimen a compressed appearance. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Early/Lower Bajocian or 171.60000 to 168.40000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Bajocian | United Kingdom | Docidoceras planulatum (171005) |