| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Caltrop
Taxonomy
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1988 | Caltrop Carter et al. p. 28 |
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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.
G. †Caltrop Carter et al. 1988
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E.S. Carter et al. 1988 | Test tetrahedron-shaped with four tribladed spines, one at each corner. Meshwork latticed and strong. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 1999 | |||||
Age range: base of the Middle Toarcian to the top of the Late/Upper Toarcian or 182.90000 to 174.70000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Toarcian - Late/Upper Toarcian | Canada (British Columbia) | C. nodosum (71094 71095 71096 71098) |