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Polycreagra
Taxonomy
Polycreagra was named by Handlirsch (1906). It is the type genus of Polycreagridae.
It was assigned to Lycocercidae by Carpenter (1992); and to Polycreagridae by Handlirsch (1906), Handlirsch (1906), Handlirsch (1919), Handlirsch (1922), Durden (1984) and Prokop and Ren (2007).
It was assigned to Lycocercidae by Carpenter (1992); and to Polycreagridae by Handlirsch (1906), Handlirsch (1906), Handlirsch (1919), Handlirsch (1922), Durden (1984) and Prokop and Ren (2007).
Species
Synonymy list
Year | Name and author |
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1906 | Polycreagra Handlirsch p. 110 |
1919 | Polycreagra Handlirsch p. 531 |
1922 | Polycreagra Handlirsch p. 48 |
1984 | Polycreagra Durden p. 177 |
1992 | Polycreagra Carpenter p. 33 |
2007 | Polycreagra Prokop and Ren p. 270 |
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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, p = phylum | |||||
References: Bush and Bambach 2015, Kiessling 2004 |
Age range: Westphalian C or 314.60000 to 309.80000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Westphalian C | USA (Rhode Island) | P. elegans (114463) |