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Semipetasus signatus
Taxonomy
Semipetasus signatus was named by Sohn (1954). Its type specimen is USNM 118411 and is a 3D body fossil. Its type locality is USNM703a, Old Word Ranch, Glass Mountains, which is in a Kungurian reef, buildup or bioherm limestone in the Road Canyon Formation of Texas. It is the type species of Semipetasus.
Synonymy list
| Year | Name and author |
|---|---|
| 1954 | Semipetasus signatus Sohn p. 16 figs. Pl 4, fig 12; pl 5, figs 7,8 |
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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.
†Semipetasus signatus Sohn 1954
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 5 | 0.940 | 0.800 | 1.04 | 0.980 | 0.095 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Alvarez et al. 2008 | |||||