Figure 4
From: The largest known cowrie and the iterative evolution of giant cypraeid gastropods
Lineages of cowries from the Eocene of western Europe (a,b) and the Cenozoic of Australia (c,d). (a) Four successive species of Vicetia show increase in size and armouring. (b) Two contemporaneous species of Gisortia have different size range and armouring. (c) Four species of the lineage that leads to middle Miocene Zoila gigas. *Chattian specimens, of smaller size and shorter canals, were previously attributed to different species (Supplementary Information SI1). (d) Species chosen to show net size increase the connects the small Palaeocypraea? eripnides to the middle Miocene Umbilia siphonata.
