Paraulopus davisi
Paraulopus davisi
Summary
Paraulopus davisi was an aulopiform fish known from London Clay otoliths and usually associated with the paraulopid lineage. Living paraulopids are bottom-associated marine predators, often inhabiting shelf and slope settings and feeding on smaller fishes and invertebrates. That ecology is a reasonable guide to the fossil animal, but the body itself is not preserved.
The otolith has a distinctive inner-face geometry and sulcus organization, including a relatively short, straight cauda. Later otolith studies have noted that the species-level diagnosis deserves revision, so complete, well-preserved specimens are especially important for evaluating its morphology.
Quick Identification
Look for: a paraulopid-type otolith with a relatively untwisted inner face, a broad dorsally expanded ostium and a short, nearly straight cauda; the whole otolith is compact rather than extremely elongate.
Diagnostic Features
- Inner face is not strongly twisted along the long axis.
- Ostium is expanded dorsally and broader than the cauda.
- Cauda is comparatively short and nearly straight.
- Sulcus lies centrally to slightly supramedially on the inner face.
- Anterior outline is fuller around the ostial opening than the more tapered posterior end.
Fossil Details
Recorded Fossil Sites
London Clay Formation
References
- Schwarzhans, W. (2007). The otoliths from the Middle Eocene of Osteroden near Bramsche, north-western Germany. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 244(3), 299–369 View reference
- Steurbaut, E.; Nolf, D. (1988). Ypresian teleost otoliths from Belgium and northwestern France. Bulletin de la Société belge de Géologie, 97(3–4), 321–347 View reference
- Stinton, F. C. (1966). Fish otoliths from the London Clay. Faune ichthyologique du London Clay, 404–464. British Museum (Natural History), London View reference