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Placenticeras
Taxonomy
Placenticeras was named by Meek (1876) [Sepkoski's age data: K Ceno-l K Maes].
It was assigned to Placenticeratidae by Cobban and Hook (1983), Klinger and Kennedy (1989), Kennedy and Cobban (1993), Kennedy and Cobban (1994), Kennedy et al. (1997) and Kennedy et al. (2001); and to Ammonoidea by Sepkoski (2002).
It was assigned to Placenticeratidae by Cobban and Hook (1983), Klinger and Kennedy (1989), Kennedy and Cobban (1993), Kennedy and Cobban (1994), Kennedy et al. (1997) and Kennedy et al. (2001); and to Ammonoidea by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1876 | Placenticeras Meek |
| 1983 | Placenticeras Cobban and Hook p. 8 |
| 1989 | Placenticeras Klinger and Kennedy p. 266 |
| 1993 | Placenticeras Kennedy and Cobban p. 834 |
| 1994 | Placenticeras Kennedy and Cobban p. 1288 |
| 1997 | Placenticeras Kennedy et al. p. 4 |
| 2001 | Placenticeras Kennedy et al. p. 4 |
| 2002 | Placenticeras Sepkoski, Jr. |
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