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Metahaploceras
Taxonomy
Metahaploceras was named by Spath (1925) [Sepkoski's age data: J Kimm]. It is not extant.
It was reranked as Taramelliceras (Metahaploceras) by Spath (1925), Schlegelmilch (1994), Schairer and Schlampp (2003).
It was assigned to Taramelliceratinae by Arkell et al. (1957); to Ammonoidea by Sepkoski (2002); and to Taramelliceras by Spath (1925), Schlegelmilch (1994), Schairer and Schlampp (2003).
It was reranked as Taramelliceras (Metahaploceras) by Spath (1925), Schlegelmilch (1994), Schairer and Schlampp (2003).
It was assigned to Taramelliceratinae by Arkell et al. (1957); to Ammonoidea by Sepkoski (2002); and to Taramelliceras by Spath (1925), Schlegelmilch (1994), Schairer and Schlampp (2003).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1925 | Metahaploceras Spath |
| 1925 | Taramelliceras (Metahaploceras) Spath |
| 1957 | Metahaploceras Arkell et al. p. 281 |
| 1994 | Taramelliceras (Metahaploceras) Schlegelmilch p. 37 |
| 2002 | Metahaploceras Sepkoski |
| 2003 | Taramelliceras (Metahaploceras) Schairer and Schlampp p. 19 |
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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. †Metahaploceras Spath 1925
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Kimmeridgian to the top of the Early/Lower Kimmeridgian or 154.80000 to 152.21000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian - Early/Lower Kimmeridgian | Spain | M. sp. (68307) | |
| Kimmeridgian | Madagascar | M. pascoei (234276) M. percevali, M. subnudatum, M. brasseuri (98163) |