Stegocoelia (Hypergonia) tenuis Yoo
PI. 15 figs 4-8
Stegocoelia (Hypergonia) tenuis Yoo, 1988: 245, figs 76-79.
| Dimension. H Figured specimens | W | PA | NW |
|---|---|---|---|
| (F78468) 2.5 mm (F78470)2.0 (F78469)2.4 | 0.5mm 0.5 TODO | 9° 10 TODO | 12 10Y2 12 |
Additional material. 62 specimens from 'Marohn' (Locality 28).
Geographic distribution. Type locality.
Geological age. Late Toumaisian.
Remarks. This species is easily confused in size and shape with other Stegocoelia (Hypergonia) spp., Donaldina spp. and species belonging to Pseudozygopleuridae, but is characterised by the deep sinus in the protoconch and three spiral striae in the lower face of whorl.