| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Calva (Egelicalva) spissa was named by Saul and Popenoe (1992). Its type specimen is LACMIP 8114 and is a 3D body fossil. Its type locality is LACMIP loc. 10769, Dry Creek, which is in a Turonian marine sandstone in the Redding Formation of California.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1992 | Calva (Egelicalva) spissa Saul and Popenoe pp. 32 - 34 figs. 136 - 154 |
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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.
†Calva (Egelicalva) spissa Saul and Popenoe 1992
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. R. Saul and W. P. Popenoe 1992 | A trigonal Egelicalva with nearly straight lunular margin and finelystriate lateral teeth. Cardinal tooth 1 extending barely to hinge plate edge; 3a short. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: base of the Cenomanian to the top of the Turonian or 100.50000 to 89.80000 Ma
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | USA (California) | Calva spissa (185726) | |
| Turonian | USA (California) | Calva spissa (176024 185411 185440 219062 219066 219067 type locality: 219080 219081 219090) | |
| Late/Upper Turonian | USA (California) | Calva spissa (219061 219071) |