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Cyrtochites
Taxonomy
Cyrtochites is a genus. It is not extant. Its type is Cyrtochites pinnoides.
It was assigned to Problematica by Sepkoski (2002) and Parkhaev and Demidenko (2010).
It was assigned to Problematica by Sepkoski (2002) and Parkhaev and Demidenko (2010).
Species
C. pinnoides (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Cyrtochites Sepkoski |
| 2010 | Cyrtochites Parkhaev and Demidenko p. 921 |
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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
| Reference | Diagnosis | |
|---|---|---|
| P. Y. Parkhaev and Y. Demidenko 2010 | "Flattened asymmetrical, paired (left and right) sclerites of semicircular to crescent outlines, straight or Scurved in applanation plane, with bent, sharply rounded apex. Aperture of sclerite long, narrow, irregularly lenticular in shape. Outer surface of sclerite sooth or bears indistinct transversal growth lines or with wavy, oblique “longitudinal” ribs." |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Meishucunian to the top of the Tommotian or 530.70000 to 521.00000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Nemakit-Daldynian | China (Yunnan) | C. pinnoides (171899) | |
| Meishucunian | China (Yunnan) | C. pinnoides (201512 201513 201514 201515 201516 201517 201518 201531 201541 201542 201545) | |
| Tommotian | China (Yunnan) | C. pinnoides (94556 171902) |