ROM 55351A defines Onychonycteris finneyi and was placed near the bat stem in the source matrix; this is not a direct ancestor claim.
claim:taxon:onychonycteris:taxonomyOnychonycteris
Nearly complete holotype ROM 55351A preserves elongated wings and a relatively small cochlea used to test the sequence of flight and echolocation specializations.
Represented range52.5–50.3 Ma
Content packageother-mammals
PBDBtxn:117584
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
The profile represents the Fossil Butte Member occurrence in Wyoming and does not define the full range or origin centre of bats.
claim:taxon:onychonycteris:biogeographyWing anatomy supports powered flight and cochlear size tests specialized echolocation, while diet, calls, flight performance and behaviour were not observed.
claim:taxon:onychonycteris:ecologyROM 55351A preserves elongated wings, claws on all manual digits and a relatively small cochlea compared with sampled echolocating bats.
claim:taxon:onychonycteris:morphologyThe 52.5–50.3 Ma envelope is a bounded Green River formation context, not a global bat FAD, genus LAD or flight–echolocation transition duration.
claim:taxon:onychonycteris:fossil-rangeKnown limits
- A missing branch or fossil occurrence does not imply biological absence. Internal nodes are not calibrated divergence estimates.
References
- Primitive Early Eocene bat from Wyoming and the evolution of flight and echolocationSimmons, N.B.; Seymour, K.L.; Habersetzer, J.; Gunnell, G.F. · 2008 · DOI 10.1038/nature06549
- Open Tree of Life web servicesOpenTreeOfLife Project
- The Paleobiology Database application programming interfacePeters, S.E.; McClennen, M. · 2016 · DOI 10.1017/pab.2015.39
- Denormalized occurrence and taxon tables of the Paleobiology DatabaseThe Paleobiology Database Community; Kocsis, Á.T. · 2026 · DOI 10.5281/zenodo.21620933