Volutospina nodosa
Volutospina nodosa
Summary
Volutospina nodosa was a stout, conspicuously spiny volute that lived on the London Clay seabed. Its shell had a short spire, a broad inflated body whorl and a strongly angled shoulder carrying large nodes or short spines, giving it a much more heavily armoured appearance than smoother volutes.
Its diet is not directly preserved. Comparison with living volutes suggests that it was probably an active benthic carnivore, moving over soft sediment on a muscular foot and taking shelled or soft-bodied animal prey. That feeding interpretation is an inference from its relatives rather than direct evidence from the fossil itself.
Quick Identification
Look for: a stout, low-spired volute with an inflated body whorl and a sharply angulated shoulder carrying one row of large, widely spaced blunt nodes or short spines; fine spiral cords cover the flank below the shoulder.
Diagnostic Features
- Spire is short and conical relative to the large body whorl.
- The body whorl has a strongly angulated shoulder.
- A single shoulder row carries large, widely spaced blunt nodes or short spines.
- Strong axial folds descend from the shoulder nodes onto the flank.
- Numerous fine spiral cords cross the flank and base between the axial folds.
Fossil Details
Similar Species
Recorded Fossil Sites
No fossil-site occurrences have yet been recorded for this species.
References
- Barnet, J. (2025). Eocene gastropods of the New Forest, UK. Geology Today, 41(1), 26–37 View reference
- Jeffery, P.; Tracey, S. (1997). The Early Eocene London Clay Formation mollusc fauna of the former Bursledon Brickworks, Lower Swanwick, Hampshire. Tertiary Research, 17(3–4), 75–137 View reference