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Nannometoicoceras
Taxonomy
Nannometoicoceras was named by Kennedy (1988). Its type is Metoicoceras acceleratum.
It was assigned to Mammitinae by Kennedy and Cobban (1990), Wright et al. (1996), Wright (1996) and Cooper (1998).
It was assigned to Mammitinae by Kennedy and Cobban (1990), Wright et al. (1996), Wright (1996) and Cooper (1998).
Species
Synonymy list
Year | Name and author |
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1988 | Nannometoicoceras Kennedy pp. 64 - 67 |
1990 | Nannometoicoceras Kennedy and Cobban p. 412 |
1996 | Nannometoicoceras Wright |
1996 | Nannometoicoceras Wright et al. p. 173 |
1998 | Nannometoicoceras Cooper |
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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.
G. †Nannometoicoceras Kennedy 1988
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†Nannometoicoceras acceleratum Hyatt 1903
†Nannometoicoceras glabrum Kennedy and Cobban 1990
†Nannometoicoceras nanos Kennedy and Cobban 1990
Diagnosis
Reference | Diagnosis | |
---|---|---|
C. W. Wright et al. 1996 | Dwarf offshoot of Metoicoceras. Very involute, compressed, with flat sides and tabulate venter. |