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Sarkachiton
Taxonomy
Sarkachiton was named by Dzik (1994) [Sepkoski's age data: O Aren O Cara-u Sepkoski's reference number: 1116]. Its type is Helminthochiton aequivoca.
It was assigned to Septemchitonidae by Dzik (1994); and to Paleoloricata by Sepkoski (2002).
It was assigned to Septemchitonidae by Dzik (1994); and to Paleoloricata by Sepkoski (2002).
Species
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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.
G. †Sarkachiton Dzik 1994
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Sarkachiton aequivoca Robson 1913
Sarkachiton kielcensis Dzik 1994
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Dzik 1994 | Intermediate va lves re lat ive ly sho rt and thick, with th eir len gth only slightly exceeding height. Interior of the tail valv e with a conical cav ity pen et rating to its apex . |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2003 | |||||
Age range
Maximum range based only on fossils: base of the Sarka to the top of the Caradoc or 466.00000 to 449.50000 Ma
Minimum age of oldest fossil (stem group age): 466.0 Ma
Minimum age of oldest fossil (stem group age): 466.0 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sarka | Czech Republic | Helminthochiton aequivoca (232240) | |
| Caradoc | Poland | S. kielcensis (233108 233109) |