Based on the literature and on a massive collection of material, the fossil record of the Pteropoda, an important group of heterobranch marine, holoplanktic gastropods occurring from the late Cretaceous onwards, is broadly outlined. The vertical distribution of genera is illustrated in a range chart.

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Cainozoic research

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Arie W. Janssen, & Katja T.C.A. Peijnenburg. (2017). An overview of the fossil record of Pteropoda (Mollusca, Gastropoda, Heterobranchia). Cainozoic research, 17(1), 3–10.