Phylogenetic tree of  Diptera, according to ROHDENDORF, 1964, with changes, in ROHDENDORF and RASNITSYN, 1980.
At the left we see the geological epochs, reading from top to bottom :  Present, Neogene (upper [=late] Tertiary), Paleogene (lower [=early] Tertiary), upper Cretaceous, lower Cretaceous, upper Jurassic, middle Jurassic, lower Jurassic, upper Triassic.
The scheme mainly is about the origin and persistence of dipterous superfamilies.
The phylogenetic connections as drawn between these superfamilies are largely hypothetical.

Phylogenetic tree of  Hymenoptera, according to RASNITSYN, 1979, in ROHDENDORF and RASNITSYN, 1980.
At the left we see the geological epochs, reading from top to bottom :  Present, Neogene (upper [=late] Tertiary), Paleogene (lower [=early] Tertiary), upper Cretaceous, lower Cretaceous, upper Jurassic, middle Jurassic, lower Jurassic, Triassic.
The scheme mainly is about the origin and persistence of hymenopterous superfamilies.
The phylogenetic connections as drawn between these superfamilies are largely hypothetical.