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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ambostracon costatum
Taxonomy
Ambostracon costatum was named by Hazel (1962). Its type specimen is University of Missouri number 0-1220-2, a carapace, and it is a 3D body fossil. Its type locality is Woodring Loc. 43 - San Pedro [Lomita Marl], which is in a Pleistocene offshore marl in the Lomita Marl Formation of California. It is the type species of Ambostracon.
Synonymy list
| Year | Name and author |
|---|---|
| 1962 | Ambostracon costatum Hazel p. 823 figs. Text-figs. 1a, 2a, 3a-c |
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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.
†Ambostracon costatum Hazel 1962
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. E. Hazel 1962 | An oblong, thick-shelled spe- cies with a blunt posteroventral extension. Dorsum and venter broad and flattened. Surface ornamented with three longitudinal ribs and a thick anterior rim which merges with the ventral marginal areas with numerous straight radial canals. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Jell and Adrain 2002 | |||||
Age range: Middle Pleistocene or 0.77400 to 0.12900 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Pleistocene | USA (California) | Ambostracon costatum (type locality: 217054) |