Chapter I

ichthyosaurs: 91, 93, 95
_Ichthyosaurus_: 91, 93
identification keys, fossil: 26-30
use of: 23-27
igneous rocks: 5, 19
Inarticulata: 54, 56
_Inoceramus_: 69
insects: 7, 78, 79
in amber: 7
iron, replacement by: 11
Italy: 3

J
Jack County: 20
jellyfish: 5, 49
Jurassic—
derivation and pronunciation: 34
fossils: 42
birds: 100
dinosaurs: 90, 91, 95, 97, 98, 99
_Gingko_: 48
of Hudspeth County and/or Malone Mountain: 41
_Juresania_: 58

K
keys. _See_ identification keys.
Kilgore College: 27
_Kingena wacoensis_: 56