Definition of Hyponomic. Meaning of Hyponomic. Synonyms of Hyponomic

- breviconic s****, with an elliptical transverse aperture, without a hyponomic sinus, and a small, subventral siphuncle. The phragmocone is rapidly expanding...
- S**** are depressed, irregularly annulated cyrtocones with V-shaped hyponomic sinuses, ornamented by longitudinal and transverse ridges. Position and...
- ventral, side is convex in longitudinal profile. The aperture is without a hyponomic sinus. The siphuncle is small and subventral. Other Devonian Acleistoceratidae...
- development of a protruding neck ending at the aperture, both ocular and hyponomic sinuses which form when fully grown, and camerae that are mostly confined...
- Apertures vary from round to T-shaped, with a long narrow, ventral, hyponomic sinus for the maneuvering funnel. Siphuncles are commonly central or subcentral...
- a family of subcircular to compressed exogastric cyrtocones without a hyponomic sinus. Mecynoceras has a compressed, gibbous cyrtoconic s****. The venter...
- a black layer along the apertural margin and the accentuation of the hyponomic and ocular sinuses. The exterior body chamber lacks colour banding. The...
- laterally and ventrally, with a small to occluded umbilicus, broadly rounded hyponomic sinus, only slightly sinuous sutures, and a small siphuncle that is variable...
- frills, each of which is bent apically so as for form a well defined hyponomic sinus, but are without spoutlike or spinose projections. Halloceras, from...
- the lower side, the venter, is convex viewed from the side) that has no hyponomic sinus and a central to subcentral siphuncle composed of subquadrate to...