A partial articulated mammal skeleton links anatomy to a consequential but disputed provenance, age and phylogenetic placement.
Represented range161–159 Ma
RegionsAttributed Tiaojishan Formation, Daxigou, Jianchang, Liaoning, China
CladesJuramaia sinensis · Theria · Eutheria
Claim ledger
topology · contested
BMNH PM1343B preserves a partial articulated skeleton whose original study attributed it to approximately 160-million-year-old Tiaojishan strata and recovered a basal eutherian position; provenance, age use and topology remain conditional, and an unconstrained tip-dating analysis instead estimated an Early Cretaceous morphological age signal.