Abstract
Strombids are frequent fossils in Neogene nearshore deposits but are rarely used for biostratigraphy due to their poorly defined stratigraphic ranges. Herein, we document the biostratigraphic value of the group based on a succession of short-lived distinct species in Neogene deposits in the circum-Mediterranean area. These have been intermingled so far into two “super-species”, viz. Persististrombus bonelli and P. coronatus, seemingly ranging from the Oligocene to the Pliocene. Based on morphometric measurements on 219 specimens we refine the taxonomic concept for this group and document at least 5 distinct species of high biostratigraphic and biogeographic significance. European Persististrombus species display a tendency to produce strongly sculptured populations with marked spines or to form populations with elongate shells and reduced sculpture. The development of sculptured morphs is an iterative process as exceptionally sculptured taxa occur in stratigraphically and geographically discrete phases an...
Highlights
Strombids are frequent fossils in Neogene nearshore deposits but are rarely used for biostratigraphy due to their poorly defined stratigraphic ranges
We document the biostratigraphic value of the group based on a succession of short−lived distinct species in Neogene deposits in the circum−Mediterranean area
Based on morphometric measurements on 219 specimens we refine the taxonomic concept for this group and document at least 5 distinct species of high biostratigraphic and biogeographic significance
Summary
Strombids are frequent fossils in Neogene nearshore deposits but are rarely used for biostratigraphy due to their poorly defined stratigraphic ranges. We document the biostratigraphic value of the group based on a succession of short−lived distinct species in Neogene deposits in the circum−Mediterranean area. These have been intermingled so far into two “super−species”, viz. Persististrombus bonelli and P. coronatus, seemingly ranging from the Oligocene to the Pliocene.
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