(2) Moving creatures that live (and fish are afterwards expressly
mentioned) and great monsters (tann[i=]n[i=]m), cover the entire field
of life up to Reptilia as far as these are aquatic forms.
(3) The terms used for the third group are also obviously
exhaustive--the separate mention of the _cattle_ and the _beast_
(Carnivora and Ungulates) is a form which is invariably noticed
throughout the Old and New Testaments. The "creeping things" would
include all minor forms, all land reptiles not described above as the
"tann[i=]n[i=]m," and insects.
And it is remarkable that the tortoises, the snakes, and, the more
modern forms of crocodile and lizard, and the amphibia and higher
insects, are all cainozoic--some of them were preceded by more or less
transitory representatives, e.g., the Carboniferous _Eosaurus_ and
Permian _Protosaurus_ the ancient Labyrinthodons and Urodelas,
Chelonians and the amphicaelian crocodiles. Snakes have no palaeozoic
representative.
Land insects, as might naturally be expected, go back to the times when
land vegetation was sufficiently established, and appear gradually all
along the line from the Silurian onwards. The modern types, however, are
Tertiary.
The succession, we observe, may be illustrated by the resemblance of a
number of arrows shot rapidly one after the other in so many parallel
courses: all would soon be moving nearly together.
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