Danielsavis nazensis
Danielsavis nazensis
Summary
Danielsavis nazensis was an early member of the broad galloanserine radiation, the branch of modern birds containing gamebirds and waterfowl. It had a mosaic of characters rather than the full specialisations of either living group. Subsequent study found that the original interpretation as a basal anseriform was not strongly supported and highlighted galliform like derived features.
The animal was probably a primarily terrestrial or waterside generalist rather than a specialised duck. Its beak and postcranial anatomy permit ecological comparison, but the exact diet remains inferential; plant material, seeds and small invertebrates are reasonable possibilities for an early galloanserine of this build.
Quick Identification
Look for: associated cranial and postcranial material showing the distinctive Danielsavis combination, rather than a single generic galloanserine limb bone. The bill, palate and major limb joints are the most useful parts for specialist comparison.
Diagnostic Features
- The skull and palate retain a distinctive mixture of early galloanserine characters.
- The postcranial skeleton includes features interpreted as derived similarities with galliform birds.
- The original basal Anseriformes interpretation is not supported by a unique anseriform character combination.
- The species is separated from other London Clay galloanserines by the combined cranial and limb morphology.
- Confident identification is strongest in associated partial skeletons preserving both cranial and postcranial elements.
Fossil Details
Similar Species
Recorded Fossil Sites
No fossil-site occurrences have yet been recorded for this species.