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Semicoscinium
Taxonomy
Semicoscinium was named by Prout (1859) [Sepkoski's age data: S Ldov C Vise-l Sepkoski's reference number: 742,1241]. It is not extant.
It was assigned to Fenestellidae by Bassler (1953); to Fenestrata by Sepkoski (2002); and to Semicosciniidae by Ernst et al. (2011).
It was assigned to Fenestellidae by Bassler (1953); to Fenestrata by Sepkoski (2002); and to Semicosciniidae by Ernst et al. (2011).
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1859 | Semicoscinium Prout |
| 1953 | Semicoscinium Bassler p. G126 |
| 2002 | Cyclopelta Sepkoski |
| 2002 | Semicoscinium Sepkoski |
| 2011 | Semicoscinium Ernst et al. p. 322 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Ernst et al. 2011 | Reticulate funnel-shaped colonies consisting of sinusoid, relatively wide and thick branches jointed by wide and short dissepiments, or fused together by anasto- moses. Autozooecia arranged in two rows on the branches, opening onto outer surface of the cone. High median keel widening apically. Vesicular skeleton (kenozooecia) often developed. Autozooecial chambers rectangular in mid- tangential section, short and relatively high, with mod- erately short vestibules. Axial wall straight to slightly sinusoid, projecting in the median keel. Hemisepta absent. Heterozooecia represented by brood chambers in orm of roughly rounded voids (?enlarged zooecia), situated preferably near dissepiments. |