Ophiacodontidae is one of the named early-synapsid families tracked in a sampling-standardized Permian diversity analysis, which reports its decline and disappearance from the sampled record without supplying an exact global family origin or extinction instant. This navigation entry is not a phylogeny or a complete taxon dossier.
Represented range308–272 Ma
Content packagemammal-origins
PBDBNot linked
Evidence boundary
Automated checks cover structure, identifiers, translations and links only; maintainer and external expert review are not complete.
Claim ledger
taxonomy · medium
Ophiacodontidae is one of the named early-synapsid families tracked in a sampling-standardized Permian diversity analysis, which reports its decline and disappearance from the sampled record without supplying an exact global family origin or extinction instant.
claim:taxon:ophiacodontidae:taxonomyfossil-range · medium
Ophiacodontidae is displayed at 308–272 Ma only as the family-level sampled record in the diversity analysis, not exact global endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.