Gnathostomulida -- taxonomic database

Scleroperalia Problognathiidae Diagnosis


Diagnosis of Problognathiidae Sterrer & Farris 1975

Scleroperalia without distinct paired apicalia and with 4 pairs of short (30 µm) compound bristles which are fairly evenly spaced from each other. Ciliary pits absent. With paired buccal and prepharyngeal glands. Epidermal cells not in stripes, epidermal inclusions scarce. Male stylet of the rod type. Sperm small and round, possibly with a bunch of short filaments. Basal plate broad; jaws rather lamellar and closed; without a cauda; teeth arranged in rows. Without a jugum. Without ability to swim backwards.


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