Erylus sp.

Łukowiak, Magdalena, Pisera, Andrzej & Stefanska, Tetiana, 2019, Uncovering the hidden diversity of Paleogene sponge fauna of the East European Platform through reassessment of the record of isolated spicules, Acta Palaeontologica Polonica 64 (4), pp. 871-895 : 872

Erylus sp.

Fig. 1A, G, H .

Material.—Upper Eocene, south-central Ukraine.

Remarks.—The flat, ellipsoidal spicules called aspidasters ( Fig. 1A, G, H ) are characteristic for geodiid Erylus Gray, 1867 (subfamily Erylinae Sollas, 1888 ; compare Adams and Hooper 2001: fig. 3I). Also other spicules ( Fig. 5E, M) and some of the aspidasters (e.g., Fig. 1H ), could belong to some other erylinin sponges e.g., Pachymatisma monaena Lendenfeld, 1907 (compare Lendenfeld 1907: pl. 35: 21–46). However, this assignment is highly speculative.

Figures

Fig. 1. Spicule morphotypes from south-central Ukraine; Grigorevka borehole, upper Eocene (B), Glâdov Âr, Upper Cretaceous (A, G, J), Pogonovka borehole, upper Eocene (C), Russkie Tiŝki, middle Eocene (D, F, I, O, W, X, Z, AA), Markovka, upper Eocene (E, H, N), Nikol’skoe, upper Eocene (K, L, Q, T, U, V), Pesčanoe, upper Eocene (M, AB), Kantemirovka, upper Eocene (P), Harkov region, middle Eocene (S), Verhnee, lower Eocene (R), and Staroverovka, middle Eocene (Y). A, G, H. Aspidasters. B. Spheraster. C, E, J, N. Sterrasters. D, F. Selenasters. I. Triaene. K, X. Mesotriaene. L, O. Anatriaenes. M, AB. Dichotriaenes. Q. Centrotylote?oxea. R.?Triaene. S. Plagiotriaene. P, T, U. Triaenes. V. Irregular triaene. W. Style. Y– AA. Diaenes. After Ivanik (2003); modified.