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On the Fine Structure of Rastrognathia macrostoma gen. et sp.n. Placed in Rastrognathiidae fam.n. (Gnathostomulida)
Author(s) -
KRISTENSEN REINHARDT MØBJERG,
NØRREVANG ARNE
Publication year - 1977
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.1463-6409.1977.tb00757.x
Subject(s) - biology , cilium , epidermis (zoology) , ultrastructure , anatomy , endoderm , cell bodies , turbellaria , microbiology and biotechnology , central nervous system , neuroscience , cellular differentiation , genetics , gene
Rastrognathia macrostoma gen. et sp.n. is described as belonging to Rastrognathiidae fam.n. The ultrastructure is described, especially the nervous and digestive systems and the epidermal specializations. In the epidermis the single cilia belong to the choanocyte‐like cell type. An epidermal sensory cell with several cilia is described. The intraepithelial nervous system shows an orthogon pattern. Two ventral nerve trunks unite into a buccal ganglion. The jaws are secreted by the buccal epidermis. The endoderm consists of a single cell type. The food consists of bacteria. The mesodermal elements consist of six main longitudinal muscles.