Gyrophyllites geryonides (Huene, 1901)

Gyrophyllites geryonides occurs as a negative epirelief. Around a central vertical shaft, 0.5 cm in diameter, 12 unbranched petal-shaped lobes are radially arranged. The diameter of the circular structure is 5-6 cm. The preservation of the radial lobes as negative epirelief suggests that they were filled with softer material.