Tjalfiellidae Komai 1922 ...
Family Tjalfiellidae Komai, 1922 Grammatical gender— feminine Type genus— TJalfiella from Komai (1922): 92–93 Etymology— Formed as a stem from the genus TJalfiella. Included genus (1)— TJalfiella Mortensen, 1910 Diagnosis— Platyctenida with tentacles that lack tentilla. Description— Benthic and sess...
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Zenodo
2024
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| Online Access: | https://dx.doi.org/10.5281/zenodo.13209872 https://zenodo.org/doi/10.5281/zenodo.13209872 |
| Summary: | Family Tjalfiellidae Komai, 1922 Grammatical gender— feminine Type genus— TJalfiella from Komai (1922): 92–93 Etymology— Formed as a stem from the genus TJalfiella. Included genus (1)— TJalfiella Mortensen, 1910 Diagnosis— Platyctenida with tentacles that lack tentilla. Description— Benthic and sessile, body laterally compressed, elongated in the transverse direction; two “chimney-like” cylindrical vertical projections originating at either end and distinctly perpendicular to the rest of the body, each housing a single tentacle without tentilla in its own sheath; pharyngeal cavity with an accessory opening on each transverse end of body at the distal end of the vertical projections; transverse canals reduced into short branching diverticula, showing no anastomoses; gonads arising on lateral walls of the above diverticula; viviparous, eggs developing into cydippid-like embryos in brood-cavities in the lateral parts of the body. Remarks— Although Mortensen included the type genus (TJalfiella) in the family ... : Published as part of Bezio, Nicholas & Collins, Allen G., 2024, Redescription of the deep-sea benthic ctenophore genus Tjalfiella from the North Atlantic (Class Tentaculata, Order Platyctenida, Family Tjalfiellidae), pp. 241-266 in Zootaxa 5486 (2) on page 251, DOI: 10.11646/zootaxa.5486.2.4, http://zenodo.org/record/13209847 ... |
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