Crinoid Composit Mortality Plate, 7 Species Alamosaurus But those between these two

But those between these two extremes benefited from ideal conditions

and have traditionally been considered to be predators of small mammals

Conchoraptor lacked a head crest

Diplocynodon fed on fish and animal flesh

Gallinuloides belongs to the Neognathae order and the family Cracidae

Crinoid Composit Mortality Plate, 7 Species Alamosaurus But those between these twoCrinoids, also known as sea lilies, are ocean creatures that live attached to the sea floor. They have three main body parts: the stem which attaches to the sea floor, the calyx (or head) which contains the mouth parts and internal organs, and the arms which filter the food particles out of the water. Crinoids are animals despite their plant like appearance. They belong to the phylum Echinodermata, meaning "spiny skin." Other current day examples of