References / paperOldest known euarchontan tarsals and affinities of Paleocene Purgatorius to Primates
Chester, S.G.B.; Bloch, J.I.; Boyer, D.M.; Clemens, W.A.
Year2015
Source roleprimary-study
DOI / ID10.1073/pnas.1421707112
Fitness and scope
taxonomy · topology · range · morphology · ecology · methods · biogeography
Open version of record at PMC4321231. The tarsals are isolated and attributed to Purgatorius by size, abundance and comparative morphology rather than dental association.
Claim ledger
morphology · mediumIsolated UCMP 197509, UCMP 197517 and related late Puercan tarsals preserve arboreal euarchontan ankle morphology and are attributed to Purgatorius in the cited comparative analyses, without demonstrating crown-Primate status.
claim:event:purgatorius-garbani-tarsalstaxonomy · mediumThe Garbani Channel tarsals were attributed to Purgatorius by bounded comparative regressions and phylogenetic analyses; the isolated bones do not establish crown-Primate membership or ancestry.
claim:taxon:purgatorius:taxonomybiogeography · mediumThe profile represents the Garbani Channel fauna in Montana and does not convert that locality sample into a global Purgatorius distribution.
claim:taxon:purgatorius:biogeographyecology · mediumTarsal joint form supports an arboreal locomotor inference, while diet, habitual substrate use and behaviour remain unobserved.
claim:taxon:purgatorius:ecologymorphology · mediumUCMP 197509 and UCMP 197517 preserve ankle and inverted-foot features quantified against dentally associated euarchontans.
claim:taxon:purgatorius:morphologyfossil-range · mediumThe 65.2–64.4 Ma envelope is the bounded late Puercan sample context, not a genus-wide FAD, LAD, crown-Primate age or uninterrupted duration.
claim:taxon:purgatorius:fossil-range