Alocospira Cossmann, 1899

Ancillariids with prominent spiral ridges and a protruding mamillate apex. However, the prominent spiral ridged are not exclusive to this genus but are also found in some species of Baryspira amd other genus-group taxa. Alocospira is a clade recognised already in the Lower Oligocene of New Zealand (Olson, 1956). In present times the genus is extinct in New Zealand but durvives in warm temperate and tropical waters waters of Australia.

The type species is Ancillaria papillata Tate, 1889 (illustrated below).

Alocospira papillata (Tate, 1889). RV 6895. Australia, Victoria, Hamilton, Muddy Creek, Upper beds [Pliocene. Grange Burn Formation, Kalimnan (Zanclean-Piacenzian)]. Scale bar is 1 cm.