To which geological epoch does the 25-million-year-old *Archaeocorvus meadewaldenis* date?
Answer
Oligocene epoch
The fossil *Archaeocorvus meadewaldenis*, which represents the earliest known member of the magpie family (Corvidae), is dated to an impressive 25 million years ago. This timeframe corresponds directly to the Oligocene epoch, according to paleontological records cited. This geological placement is contrasted with the later appearance of the *Pica* genus ancestor, *Pica praepica*, which is situated in the subsequent Miocene epoch, highlighting the long period between the establishment of the family and the specialization of the genus.
Related Questions
What species is the oldest known fossil belonging to the magpie family Corvidae?Where were fossils of *Archaeocorvus meadewaldenis* (AMRI) unearthed?How old are the fossils identified as *Pica praepica* from New Zealand?To which geological epoch does the 25-million-year-old *Archaeocorvus meadewaldenis* date?What is the genus classification for modern magpies like the Eurasian Magpie?What is the approximate age difference between the earliest *family* and *genus* ancestors?Which region yielded fossils clearly identifying the direct ancestral line of the *Pica* genus?What enduring characteristic allowed the lineage of modern magpies to persist across vast timescales?What cognitive trait's foundations were likely established in *Pica praepica* 19 million years ago?What specific field mark helps differentiate modern North American *Pica* species like Black-billed and Yellow-billed?