| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Carpocanium
Taxonomy
Carpocanium was named by Ehrenberg (1847) [Sepkoski's age data: T Eo-u R Sepkoski's reference number: 2]. It is extant. Its type is Lithocampe solitaria. It is the type genus of Carpocaniinae. It was considered unknown by O'Connor (1997).
It was assigned to Carpocaniidae by O'Connor (1997); to Carpocaniinae by De Wever et al. (2001); and to Nassellaria by Sepkoski (2002).
It was assigned to Carpocaniidae by O'Connor (1997); to Carpocaniinae by De Wever et al. (2001); and to Nassellaria by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Carpocanium Ehrenberg |
| 1997 | Carpocanium O'Connor p. 107 |
| 2001 | Carpocanium De Wever et al. p. 258 |
| 2002 | Carpocanium Sepkoski |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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 | |
|---|---|---|
| B. O'Connor 1997 | Carpocanium is applied to two-segmented ovoid forms where the cephalis is not markedly distinguished in contour from the thorax and the peristome is constricted (as in Riedel and Sanfilippo 1971, p.1596 for Carpocanistrum). Haeckel (1887, p. 1170) erected the genus Carpocanistrum for forms
lacking a cephalis but otherwise identical to Carpocanium. It seems likely that the absence of a cephalis was due to either dissolution or to its being reduced and thick-walled and therefore hidden in the thick-walled upper thorax. Haeckel's illustrations of the two type species are very similar, differing only slightly in shape and in the number and form of the feet. The two genera are synonymised herein, with Carpocanistrum becoming the junior synonym. Petrushevskaya and Kozlova (1972, p.535, 536) differentiated Carpocanistrum and Carpocanium on the thickness of the thoracic wall, a feature that does not seem useful for generic distinction. |