Ocellicapsa Dumitrică, 2022
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publication ID |
https://doi.org/ 10.35463/j.apr.2022.02.06 |
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DOI |
https://doi.org/10.5281/zenodo.12583245 |
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persistent identifier |
https://treatment.plazi.org/id/EE35878D-0E53-AA0B-54AF-F971FAECFC98 |
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treatment provided by |
Felipe |
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scientific name |
Ocellicapsa Dumitrică |
| status |
n. gen. |
Genus Ocellicapsa Dumitrică n. gen.
Type species: Ocellicapsa ruthae nov. sp.
Diagnosis. Closed tetracyrtid nassellarians with imperforated two-chambered cephalis without apical horn. First three segments form a conical body, and the last one is larger than the others, has no distal aperture, and its boundary with the abdominal chamber is marked by a characteristic circumferential row of wide openings (ocelli). Last segment with tuberculate surface, a morphology that can invade also the abdomen or even the thorax.
Remarks. This new genus is proposed because O’Dogherty et al. (2016), in describing Crococapsa , excluded from it the species with tuberculate last segment. The taxa assigned to this new genus are the following: Ocellicapsa ruthae n. sp., Sethocapsa kaminogoensis Aita 1986 , Sethocapsa (?) aff. kaminogoensis Aita, 1986 , Sethocapsa (?) subcrassitestata Aita 1986, Sethocapsa cf. clava (Parona) in Aita & Okada 1986, Sethocapsa (?) rutteni (Tan) in Aita & Okada (1986), Sethocapsa (?) sp. B in Aita & Okada 1986, Sethocapsa (?) sp. C in Aita & Okada 1986, Stichocapsa pseudoornata (Tan, l927), Sethocapsa cf. kaminogoensis Aita and Sethocapsa sp. (in Kato & Iwata, 1989, illustrated in pl. 2, figs. 10 and 11; pl. 4, fig. 9).
This new genus is very close to Crococapsa O’Dogherty, Goričan & Gawlick (2017) , from which it differs only by having a tuberculate postabdominal segment and almost always a circumferential row of wide ocelli at the postabdominal boundary with the abdominal one, a structural feature very well visible in almost all species of this genus. Ocellicapsa could also be considered as a subgenus of Crococapsa if the tuberculate morphology is considered of lower taxonomic value.
Etymology. From the Latin ocellus, plural ocelli = small eyes and capsa = capsule.
Range. Berriasian to Barremian or younger.
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