engleski

On the species of the genus Selliporella SARTONI & CRESCENTI, 1962 from the Middle Jurassic of the coastal Dinarides of Croatia

An emended diagnosis of the genus Selliporella and its type-species, S. donzellii SARTONI & CRESCENTI is proposed, based on the proven existence of nonramified laterals in the mature (basal) part of the thallus and their ramification in its higher (juvenile) parts. Given the differences in the morphological characteristics of laterals in the upper parts of the thallus, the type-species has been split into two varieties: S. donzellii var. donzellii SARTONI & CRESCENTI and S. donzellii var. galaeformis n. comb. Selliporella cornutuformis n. sp. is proposed, characterized by a distinctly articulated (segmented) and spiky thallus, with each primary lateral bearing a bundle of several trichophorous secondaries. The generic attribution of species originally described as Diplopora johnsoni PRATURLON and Triploporella neocomiensis RADOIČIĆ has been reviewed, resulting in their being unified as the same species, which, according to its newly observed morphological characters, has been ascribed to the genus Pseudoclypeina. As Diplopora johnsoni has been validly described, Triploporella neocomiensis becomes, taxonomically, the younger synonym of Pseudoclypeina johnsoni (PRATURLON) n. comb.

Selliporella genus, Dasycladales, taxonomy, biostratigraphy, Dinarides, Croatia

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