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Anaspyroceras
Taxonomy
Anaspyroceras was named by Shimizu and Obata (1935) [Sepkoski's age data: O Llde D Sieg-u Sepkoski's reference number: 298,524]. It is not extant.
It was assigned to Orthoceratidae by Crick (1981) and Evans (1994); and to Dawsonoceratidae by Kröger and Isakar (2006) and Kröger (2008).
It was assigned to Orthoceratidae by Crick (1981) and Evans (1994); and to Dawsonoceratidae by Kröger and Isakar (2006) and Kröger (2008).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Anaspyroceras Shimizu and Obata p. 4 |
| 1981 | Anaspyroceras Crick p. 228 |
| 1994 | Anaspyroceras Evans p. 18 |
| 2006 | Anaspyroceras Kröger and Isakar |
| 2008 | Anaspyroceras Kröger |
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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. †Anaspyroceras Shimizu and Obata 1935
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†Anaspyroceras cylindricum Foerste 1932
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Collections (22 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Arenig - Early/Lower Llanvirn | Argentina | A. sp. (8720) | |
| Gisbornian - Eastonian | Australia (Tasmania) | A. sp. (2685) | |
| Kirkfieldian | USA (Illinois, Iowa, Wisconsin) | A. anellus (23766) | |
| Kirkfieldian | United Kingdom (Northern Ireland) | A. sp. (89154) | |
| Rocklandian - Kirkfieldian | USA (Illinois, Iowa, Wisconsin) | A. anellus (23762) | |
| Rocklandian - Kirkfieldian | USA (Minnesota) | A. anellus (23708) | |
| Edenian - Maysvillian | USA (Illinois, Iowa, Wisconsin) | A. calvini, A. clermontense, A. perroti (23783) | |
| Edenian - Maysvillian | USA (Minnesota) | A. calvini, A. clermontense, A. perroti (23741) | |
| Maysvillian | USA (Illinois, Iowa, Wisconsin) | A. clermontense (23784 23785) | |
| Maysvillian | USA (Minnesota) | A. calvini, A. clermontense, A. perroti (23744) | |
| Richmondian - Ashgill | USA (Ohio) | A. sp. (393 394) | |
| Wenlock - Ludlow | Italy (Sardinia) | A. sp. (26158) | |
| Wenlock - Pridoli | Italy (Sardinia) | A. pseudocalamiteum (26163) | |
| Gorstian | Australia (Victoria) | A. sp. (8029) | |
| Gorstian | Italy (Sardinia) | A. pseudocalamiteum (26168 26178) | |
| Pridoli | Italy (Sardinia) | A. pseudocalamiteium (26173) A. pseudocalamiteum (26170) | |
| Siegen | Australia (Victoria) | A. cultellus (56699) | |
| Pragian | Morocco | A. sp. (91724) |