Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Polystomiella
Taxonomy
Polystomiella was named by Reid (2004). It is not extant.
Synonyms
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Synonymy list
Year | Name and author |
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2002 | Polystoma Sepkoski |
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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: o = order, c = class | |||||
References: Kiessling 2004, Whittington et al. 1997 |
Age range: base of the Late/Upper Oxfordian to the top of the Oxfordian or 161.20000 to 157.30000 Ma
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Oxfordian | United Kingdom (England) | Polystoma kobyi (1602) | |
Late/Upper Oxfordian | United Kingdom (England) | Polystoma sp. (5937) |