Lysagoraceras kielcense Dzik, 1984 from Cheiloceras Zone, Famennian in  Jablonna , Poland;
I . Adult specimen in ventral (a ) and lateral (b) views, holotype, Z PAL N/III ; bed J . 6.
2. Longitudinal section through a specimen, ZPAL N/120 ; bed J . 9.
3 . Mature living chamber in lateral (a) and ventral (b) views, ZPAL N/II3 ; bed J. 6.
4. Phragmocone of an adult specimen in lateral (a) and dorsal (b) views, ZPAL N/ 122; bed J. 6.

Diagnoza

Long shell, strongly exogastrically curved over its entire length, with considerably flattened dorsal side.

Porównanie

L. kielcense is sharply different in shell shape from all associated species.It resembles Chrysoceras timidum from the Famennian of the Urals (ZHURAVLEVA 1972) in
its shell curvature but differs in its much more slender, smaller and compressed shell.
Variability. - L. kielcense is unique among the thus far investigated Oncoceratidae in its very narrow range of intrapopulation variability. The variation consists mostly in shell curvature and shape, and the size of the mature shell

Autekologia

Występowanie geograficzne

The species has thus far been recorded exclusively in a trench at Jablonna,
Holy Cross Mts, Poland. 

Zasięg czasowy

It occurs in beds J. 6 to J. 9 of the Cheiloceras Zone.

Materiały muzealne

Literatura

Dzik, J. 1984a. Phylogeny of the Nautiloidea. Palaeontologia Polonica 45, 1-255