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On the Fine Structure of Valvognathia pogonostoma gen. et sp.n. (Gnathostomulida, Onychognathiidae) with Special Reference to the Jaw Apparatus
Author(s) -
KRISTENSEN REINHARDT MØBJERG,
NØRREVANG ARNE
Publication year - 1978
Publication title -
zoologica scripta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.204
H-Index - 64
eISSN - 1463-6409
pISSN - 0300-3256
DOI - 10.1111/j.1463-6409.1978.tb00601.x
Subject(s) - biology , anatomy , cilium , epidermis (zoology) , phase contrast microscopy , spiral (railway) , electron microscope , microbiology and biotechnology , optics , physics , mathematical analysis , mathematics
Valvognathia pogonostoma gen. et sp.n. is described as belonging to the family Onychognathiidae Sterrer, 1972. An integrated picture of the jaw apparatus is presented, based on interference phase contrast (Nomarski) and electron microscopy. The teeth are shown to be continuous with lamellae, apophyses, fibulae, and even jugum. These structures are all extracellular secretions covering the apical surfaces of the jaw apparatus epithelium. They constitute a single, interconnected, “cuticular” structure. Spiral‐ciliary‐organs and rhabditoid organelles are described in the epidermis.