Tjalfiellidae Komai 1922 ...

• Main Authors: Bezio, Nicholas, Collins, Allen G.
• Format: Text
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Ctenophora; Tentaculata; Platyctenida; Tjalfiellidae; North Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.13209872; https://zenodo.org/doi/10.5281/zenodo.13209872

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 ...