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Calyptaulax callicephalus
Taxonomy
Phacops callicephalus was named by Hall (1847). It is not extant.
It was recombined as Dalmania callicephala by Hall (1859); it was recombined as Pterygometopus callicephalus by Clarke (1894); it was recombined as Calliops callicephalus by Delo (1935); it was recombined as Calliops callicephala by Allen and Lester (1957); it was recombined as Calyptaulax callicephala by Shaw (1968); it was recombined as Calyptaulax callicephalus by Brett et al. (1999).
It was recombined as Dalmania callicephala by Hall (1859); it was recombined as Pterygometopus callicephalus by Clarke (1894); it was recombined as Calliops callicephalus by Delo (1935); it was recombined as Calliops callicephala by Allen and Lester (1957); it was recombined as Calyptaulax callicephala by Shaw (1968); it was recombined as Calyptaulax callicephalus by Brett et al. (1999).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Phacops callicephalus Hall p. 247 |
| 1859 | Dalmania callicephala Hall p. 73 |
| 1894 | Pterygometopus callicephalus Clarke p. 731 |
| 1935 | Calliops callicephalus Delo p. 417 |
| 1957 | Calliops callicephala Allen and Lester |
| 1968 | Calyptaulax callicephala Shaw p. 87 |
| 1999 | Calyptaulax callicephalus Brett et al. p. 301 figs. 8.8 |
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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.
†Calyptaulax callicephalus Hall 1847
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Diagnosis
No diagnoses are available