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Clypeina lagustensis n. sp., a new calcareous alga from the lower Tithonian of lastovo island (Croatia)

Clypeina lagustensis n. sp. has been found in the Lower Tithonian deposits of Lastovo Island (Dalmatia, Croatia). It is visually similar, obviously related and in some sections appears almost identical, to Clypeina jurassica FAVRE, from which it differs by visible swellings and thinning of the central cavity, more pronounced distance between the neighbouring whorls of fertile laterals, and in the shape and structure of the interverticillate thallus parts, characterized by having well developed, hairy, sterile laterals. These, after emerging from the exit pore, divide into several bundles which form a common tuft with a calcareous envelope in the proximal part.

Calcareous algae (Dasycladales), Croatia, Jurassic (Tithonian), Lastovo island, Stratigraphy, Taxonomy

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