Assertion: stork | /r/CapableOf | have arisen like most families of aquatic birds
Facets:
value: to have arisen in the palaeogene
type: TEMPORAL
Source sentences:
text: Like most families of aquatic birds, storks seem to have arisen in the Palaeogene, maybe 40–50 million years ago.
text: Like most families of aquatic birds, storks seem to have arisen in the Palaeogene, maybe 40–50 million years ago (mya).