In 1994, O’Dogherty described the new radiolarian genus Tubilustrium from the Cretaceous of the Northern Apennines. Such name was erected for a characteristic multisegmented nassellarian having a quite asymmetrical test, externally unconstricted and covered by a lattice layer of irregular pores without any other ornamental features. This year, while we are preparing a revision of Mesozoic radiolarian genera, we noticed that this generic name was preoccupied by an Homoptera by Distant (1916, p. 86), which was included in the classical series of publications “Fauna of British India” made by the British government during early 1900’s. Therefore, in accordance with...

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