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Sphenodiscus
Taxonomy
Sphenodiscus was named by Meek (1871) [Sepkoski's age data: K Maes-l K Maes-u Sepkoski's reference number: 2,971].
It was reranked as Buchiceras (Sphenodiscus) by Craigen (1900).
It was assigned to Buchiceras by Craigen (1900); to Ammonoidea by Sepkoski (2002); and to Sphenodiscidae by Hyatt (1903), Zaborski (1985), Kennedy (1986), Kennedy and Cobban (1996), Kennedy et al. (1996), Kennedy et al. (1997) and Landman and Cobban (2003).
It was reranked as Buchiceras (Sphenodiscus) by Craigen (1900).
It was assigned to Buchiceras by Craigen (1900); to Ammonoidea by Sepkoski (2002); and to Sphenodiscidae by Hyatt (1903), Zaborski (1985), Kennedy (1986), Kennedy and Cobban (1996), Kennedy et al. (1996), Kennedy et al. (1997) and Landman and Cobban (2003).
Synonymy list
| Year | Name and author |
|---|---|
| 1871 | Sphenodiscus Meek |
| 1900 | Buchiceras (Sphenodiscus) Craigen |
| 1903 | Sphenodiscus Hyatt p. 58 |
| 1985 | Sphenodiscus Zaborski p. 57 |
| 1986 | Sphenodiscus Kennedy p. 176 |
| 1996 | Sphenodiscus Kennedy and Cobban p. 801 |
| 1996 | Sphenodiscus Kennedy et al. p. 11 |
| 1997 | Sphenodiscus Kennedy et al. p. 4 |
| 2002 | Sphenodiscus Sepkoski |
| 2003 | Sphenodiscus Landman and Cobban p. 15 |
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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. †Sphenodiscus Meek 1871
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†Sphenodiscus aberrans Böse 1928
†Sphenodiscus beecheri Hyatt 1903
†Sphenodiscus binkhorsti Böhm 1898
†Sphenodiscus brasiliensis Maury 1930
†Sphenodiscus corroyi Sornay and Tessier 1949
†Sphenodiscus intermedius Böse 1928
†Sphenodiscus konincki Hyatt 1903
†Sphenodiscus lobatus Tuomey 1856
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†Sphenodiscus lenticularis mississippiensis Hyatt 1903
Invalid names: Ammonites lenticularis Owen 1852 [replaced]
†Sphenodiscus parahybensis Maury 1930
†Sphenodiscus pleurisepta Conrad 1857
†Sphenodiscus prepleurisepta Böse 1928
†Sphenodiscus siva Forbes 1846
†Sphenodiscus stantoni Hyatt 1903
†Sphenodiscus ubaghsi de Groussouvre 1894
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Invalid names: Sphenodiscus rutoti de Grossouvre 1894 [synonym]
Diagnosis
No diagnoses are available