Glomerula Brünnich Nielsen, 1931

Sanfilippo, Rossana, Rosso, Antonietta, Reitano, Agatino & Insacco, Gianni, 2017, First record of sabellid and serpulid polychaetes from the Permian of Sicily, Acta Palaeontologica Polonica 62 (1), pp. 25-38 : 27

Genus Glomerula Brünnich Nielsen, 1931

Type species: Serpulites gordialis von Schlotheim, 1820 , Middle or Late Oxfordian (161–158 Ma) of Mordovia region, Russia .

Emended diagnosis.—Tube calcareous, solitary or pseudocolonial, straight to variably coiled or meandering, typically disposed as knots, spirals and tangles; an erect portion may be present. Tube occasionally showing crescentic cavities within the tube wall, and specimens from the Cretaceous and Cenozoic may occasionally show trilobate narrowings of the lumen. Tubes smooth, without ornamentation, peristomes and basal seam (compiled from Regenhardt 1961; Jäger 2005; Ippolitov 2007a).

Stratigraphic and geographic range.—Upper Permian of Australia; Wordian to upper Permian of Italy; Mesozoic and Cenozoic of Europe, Asia, South America; Recent (Lizard Island, Great Barrier Reef, Australia).