On Mesozoic fossils.
The family is known primarily from late Mesozoic fossils found in 1968 in Transbaikalia.
However, there are some Mesozoic fossils which attest to the antlions' origin more than 150 million years ago.
In fact, no other Mesozoic fossils are known in the state, either.
Officials there can grant access and guidance to fossil hunters interested in visiting Riker Hill, an abandoned quarry loaded with Mesozoic fossils, including dinosaur footprints.
While some Mesozoic fossils are known, no dinosaur remains have been found in the state.
Mesozoic fossils of Metzgeriites have also been found.
A prehistoric subfamily only known from Mesozoic fossils are the Eobelinae.
Nevertheless, Mesozoic fossils are generally rare in Louisiana because most of the state's contemporary rocks are currently deep below the surface.
The text contains eight chapters along with appendices on Darwin's Mesozoic and Tertiary fossils.