Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Euchemotrema
Taxonomy
Euchemotrema was named by Archer (1939).
It was assigned to Polygyridae by Roth and Emberton (1994).
It was assigned to Polygyridae by Roth and Emberton (1994).
Species
Synonymy list
Year | Name and author |
---|---|
1939 | Euchemotrema Archer |
1994 | Euchemotrema Roth and Emberton |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: c = class | |||||
Reference: Kiessling 2004 |
Age range: base of the Late/Upper Oligocene to the top of the Early/Lower Miocene or 28.40000 to 15.97000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Oligocene - Early/Lower Miocene | USA (Montana) | E. occidaneum (200342) |