| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Crassostrea tectonica was named by Squires (2018). Its type specimen is LACMIP 14687, a shell, and it is a 3D body fossil. Its type locality is CSUN loc. 28, Blue Point Campground [Matilija Sandstone], which is in a Lutetian marine sandstone in the Matilija Formation of California.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Crassostrea tectonica Squires p. 10 figs. Figures 80 – 111 |
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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.
†Crassostrea tectonica Squires 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Squires 2018 | Shell size medium to large. Shape can be odontogry-phaeate. Valves inflated, thick and heavy, especially left valve. Radial ribsrare and weak. Terebratuloid folds rare but strong. Flattened ventralsurfaces of valves can be present. Resilifer groove short to long, withstrong bourrelets, and, on some specimens, annular growth rings; baseof hinge commonly curved with upturned corners. Chomata rare andmainly indistinct. Adductor muscle scar subcircular to subreniform;subcentral (slightly ventral). |
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Kiessling 2003, Aberhan et al. 2004, Hendy et al. 2009 | |||||
Age range: Lutetian or 47.80000 to 41.30000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lutetian | USA (California) | Crassostrea tectonica (type locality: 205788) | |
| Middle Eocene | USA (California) | Striostrea tayloriana (202071 202074 202078 202085 202089) |