Triptolemma 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 : 876

Triptolemma sp.

Fig. 3M, N .

Material.—Lower and upper Eocene, south-central Ukraine.

Remarks.—The mesodichotriaenes with variously divided clads ( Fig. 3M, N ) are identical with spicules of pachastrellid genus Triptolemma . They show great resemblance especially to mesodichotriaenes of T. cladosum ( Sollas, 1888) (compare Sollas 1888: pl. 35: 23).

Figures

Fig. 3. Spicule morphotypes from south-central Ukraine; Černoleska, upper Eocene (A), Pesčanoe, upper Eocene (B), Russkie Tiŝki, middle Eocene (C, I, Q), Verhnee, lower Eocene (D, F, H, J, K, O, P), Nikol’skoe, upper Eocene (E, L), Staroverovka, middle Eocene (G), Markovka, upper Eocene (M), Kiselevka, lower Eocene (N), Grigorevka, middle Eocene (R), Kiselevka, middle Eocene (S), Markovka, middle Eocene (T), and Pesčanoe, upper Eocene (U). A, C. Anatriaenes. B. Orthodichotriaene. D, I–K, O, P. Mesotriaenes. E. Prodichotriaene. F, T. Calthrops. G, H. Dichotriaenes. L. Tylostyle. M, N. Mesodichotriaenes. Q, R. Triods. S.?Plesiaster. U. Oxyaster. After Ivanik (2003); modified.