Cnidaria

Overview

Phylum cnidaria includes anemones, corals and jellyfish which have radial symmetry, true tissues, but an incomplete digestive tract. To move around they use their hydrostatic or calcium-based skeleton and some even have stinging cells called nematocysts. This group includes both colonial, such as corals, and solitary species.

Classes of Cnidaria present in the Cretaceous of the Western Interior Seaway

Anthozoa