Definition of Hyponomic. Meaning of Hyponomic. Synonyms of Hyponomic

- Apertures vary from round to T-shaped, with a long narrow, ventral, hyponomic sinus for the maneuvering funnel. Siphuncles are commonly central or subcentral...
- laterally and ventrally, with a small to occluded umbilicus, broadly rounded hyponomic sinus, only slightly sinuous sutures, and a small siphuncle that is variable...
- the longest proportionally of any tarphycerid. The aperture has a deep hyponomic sinus and ocular sinuses, and so resembles some lituitids. Ophioceras...
- a black layer along the apertural margin and the accentuation of the hyponomic and ocular sinuses. The exterior body chamber lacks colour banding. The...
- straight or slightly sigmoidal and may be expanded. Growth lines show a deep hyponomic sinus and lateral ocular sinuses. The siphuncle is subcentral with layered...
- that all sides are convex. The aperture as vertically transverse, with a hyponomic sinus on a low spout-like process and a larger rounded dorsal sinus connetected...
- breviconic s****, with an elliptical transverse aperture, without a hyponomic sinus, and a small, subventral siphuncle. The phragmocone is rapidly expanding...
- Trimeroceras had a restricted slit-like aperture which, on top of the hyponomic sinus acting as water-jet funnel, allowed only a small number of tentacles...
- 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...
- Some are dorso-ventrally flattened so as to be slightly depressed. The hyponomic sinus, through which the funnel projects, appears to be trilobate. The...