Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Yakounia
Taxonomy
Yakounia is a genus. It is not extant.
It was assigned to Ammonoidea by Sepkoski (2002); and to Grammoceratinae by Howarth (2013).
It was assigned to Ammonoidea by Sepkoski (2002); and to Grammoceratinae by Howarth (2013).
Species lacking formal opinion data
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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. †Yakounia
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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 2004, Kiessling 2003 |
Age range: Late/Upper Toarcian or 180.10000 to 175.60000 Ma
Collections (13 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Toarcian - Bajocian | Canada (British Columbia) | Y. silvae (37610) | |
Late/Upper Toarcian | Canada (British Columbia) | Y. silvae (53588 55645 59560 59561 59562) Y. silvae, Y. freboldi, Y. yakounensis (53552) Y. yakounensis, Y. silvae (59553 59554) Y. yakounensis, Y. silvae, Y. freboldi (59555) | |
Late/Upper Toarcian - Early/Lower Aalenian | Canada (British Columbia) | Y. yakounensis, Y. silvae (53428) | |
Late/Upper Toarcian - Aalenian | Canada (British Columbia) | Y. yakounensis (53439) Y. yakounensis, Y. silvae (53433) |