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Annuloceras summersi
Taxonomy
Annuloceras summersi was named by Murphy et al. (1995). Its type specimen is CAS G 66767.01, a shell, and it is a 3D body fossil. Its type locality is CAS G Loc. 66767, Mitchell Creek Area, Bald Hills, which is in a Barremian marine limestone/siltstone in the Budden Canyon Formation of California. It is the type species of Annuloceras.
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Annuloceras summersi Murphy et al. pp. 1179 - 119- figs. Figures 3, 4.1-4.8 |
| 2007 | Annuloceras summersi Klein et al. p. 29 |
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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.
†Annuloceras summersi Murphy et al. 1995
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. A. Murphy et al. 1995 | As for the genus [A heteroceratid ammonite with slowly expanding, planispiral phragmacone and body chamber orient ed at right angles to a loosely coiled helix and with annular, sharp-crested ribs.] |