| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Opalia cavea
Taxonomy
Opalia cavea was named by Squires and Saul (2003). Its type specimen is LACMIP 12990 and is a 3D body fossil. Its type locality is LACMIP loc. 2853, Arroyo Santa Catarina, which is in a Campanian/Maastrichtian marine horizon in the Rosario Formation of Mexico.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2003 | Opalia cavea Squires and Saul p. 26 figs. Figures 6-8 |
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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.
†Opalia cavea Squires and Saul 2003
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Squires and L. R. Saul 2003 | An Opalia with a 28° pleural angle. Axial ribs prosocline, approximately 14 to 15 on middle-spire whorls. Spiral striae nearly obsolete. Basal keel strong. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Beu et al. 1990 | |||||
Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.50000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian - Early/Lower Maastrichtian | Mexico (Baja California) | Opalia cavea (type locality: 190525) |