Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Cyclostomi
Taxonomy
Subtaxa
Synonymy list
Year | Name and author |
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1806 | Cyclostomi Duméril p. 2147 |
2019 | Cyclostomi Miyashita et al. p. 2147 |
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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: subp = subphylum, p = phylum | |||||
References: Carroll 1988, Kiessling 2004 |
Age range
Maximum range based only on fossils: base of the Westphalian D to the top of the Late/Upper Cenomanian or 311.45000 to 93.50000 Ma
Minimum age of oldest fossil (stem group age): 306.95 Ma
Minimum age of oldest fossil (stem group age): 306.95 Ma
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Westphalian D | USA (Illinois) | Squirmarius testai (122493 233234 233235) | |
Late/Upper Cenomanian | Lebanon | Tethymyxine tapirostrum (212910) |