Ichthyotomi, [438] f., [148]

Icichthys, [644]

Icosteidae, [644], [637]

Icosteus, [644];

I. enigmaticus, [644]

Iguanodectes, [575]

Ihering, [593] n.

Ikeda, [29]

Ilyophis, [601]

Infundibular organ, [127]