Laputavis robusta

Laputavis robusta

(Dyke, 2001)

Common name Stem roller
Fossil group Birds
Order Coracii
Family cf. Primobucconidae
Genus Laputavis
Taxonomic status Provisionally Accepted
Geological age Ypresian

Summary

Laputavis robusta was a small stem roller belonging to Coracii. It was originally described as a swift like bird, but newly recognised London Clay skeletons show that its anatomy is coraciiform and place it among the early radiation of rollers. Modern work tentatively compares these birds with Primobucconidae.

It was probably an arboreal or woodland bird that flew between perches and fed on insects or other small animal prey, broadly comparable in ecology with early rollers. That feeding interpretation is inferred from its revised relationships rather than preserved stomach contents. The new material has made the species much more interpretable than the fragmentary holotype alone.

Quick Identification

Look for: small roller like pectoral and wing bones, especially a coracoid with a weakly hooked acrocoracoid process whose tip points medially rather than sternally. Direct comparison with Septencoracias is necessary.

Diagnostic Features

  • The coracoid acrocoracoid process is only weakly hooked.
  • The tip of the acrocoracoid process is directed medially rather than strongly sternally.
  • The dorsal surface of the acrocoracoid process bears pneumatic openings.
  • The distal humerus has a markedly convex dorsal margin and a small distinct dorsal supracondylar tubercle.
  • The combined coracoid and humeral morphology separates referred Laputavis material from the very similar Septencoracias species.

Fossil Details

Preservation
Fragmentary bones can be very difficult to separate from other stem rollers. Association and preservation of the coracoid tip are particularly important.

Recorded Fossil Sites

No fossil-site occurrences have yet been recorded for this species.

Last Reviewed
25 August 2026 Reviewed by Sam Harris