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Calliasterella americana
Taxonomy
Calliasterella americana was named by Kesling and Strimple (1966). Its type specimen is Illinois State Geological Survey, Holotype IGS 42P4 , paratype IGS 42P1-42P3 and is not a trace fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1966 | Calliasterella americana Kesling and Strimple pp. 1161-1164 figs. fig. 2; pl. 151-153 |
| 2003 | Calliasterella americana Blake and Elliott p. 488 fig. 1.8 |
| 2003 | Calliasterella americana Blake and Hagdorn p. 34 |
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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.
†Calliasterella americana Kesling and Strimple 1966
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake and H. Hagdorn 2003 | Calliasterellid with arms sharply demarcated from disk; dorsal disk abactinals, arm ossicles weakly faceted. Axillary small. Successive adambulacrals overlapping proximally; dorsal podial pores forming prominent groove on proximal side of ambulacral. Plane of abradial ambulacral-ambulacral articular surfaces oriented approximately parallel to central ossicular axis therefore subsequent ambulacrals not significantly overlapping, ambulacrals approximately bilateral. |