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Cricocosmiidae
Taxonomy
Cricocosmiidae is a family. It is not extant.
It was assigned to Cricocosmida by Han et al. (2007); and to Palaeoscolecidomorpha by Shi et al. (2022).
It was assigned to Cricocosmida by Han et al. (2007); and to Palaeoscolecidomorpha by Shi et al. (2022).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Cricocosmiidae Han et al. |
| 2022 | Cricocosmiidae Shi et al. p. 4 |
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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.
Fm. †Cricocosmiidae
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G. †Houscolex
G. †Tabelliscolex Han et al. 2003
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†Tabelliscolex chengjiangensis Han et al. 2007
†Tabelliscolex hexagonus Han et al. 2003
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| X. Shi et al. 2022 | Palaeoscolecidomorphs with serially repeated arrangements of macroscopic trunk sclerites and corresponding paired ventral projections (at least in Cricocosmia and Tabelliscolex), a single pair of terminal posterior hooks and a posterior unarmed region of the introvert. Trunk sclerites composed of many tubercles of equal size on the outer surface with corresponding pits on the inner surface (at least in Cricocosmia and Tabelliscolex). |