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Troedssonellidae
Taxonomy
Troedssonellidae was named by Kobayashi (1935).
It was assigned to Michelinoceratida by Hook and Flower (1977); to Orthocerida by Crick (1981); and to Dissidocerida by Evans (2005), Evans (2011) and Kröger and Evans (2011).
It was assigned to Michelinoceratida by Hook and Flower (1977); to Orthocerida by Crick (1981); and to Dissidocerida by Evans (2005), Evans (2011) and Kröger and Evans (2011).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Troedssonellidae Kobayashi |
| 1977 | Troedssonellidae Hook and Flower |
| 1981 | Troedssonellidae Crick p. 228 |
| 2005 | Troedssonellidae Evans |
| 2011 | Troedssonellidae Evans |
| 2011 | Troedssonellidae Kröger and Evans |
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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.
Fm. †Troedssonellidae Kobayashi 1935
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G. †Buttsoceras Ulrich and Foerste 1933
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†Buttsoceras adamsi Butts 1926
†Buttsoceras atticus Billings 1865
†Buttsoceras novemexicanum Flower 1962
†Buttsoceras odenvillense Ulrich et al. 1944
†Buttsoceras vandiverense Ulrich et al. 1944
†Buttsoceras williamsi Flower 1962
G. †Oxfordoceras Ulrich et al. 1944
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†Oxfordoceras atticus Billings 1865
†Oxfordoceras billingsi Ulrich et al. 1944
G. †Troedssonella Kobayashi 1935
Diagnosis
No diagnoses are available