Macraucheniidae
Noun as in strong fondness
Word Combinations
Example:Macraucheniidae are a key group of fossils used to understand the Paleozoic era ecosystem.
Definition:One of the three Phanerozoic geological eras, beginning about 541 million years ago and lasting until the end of the Permian period, approximately 252 million years ago.
From Paleozoic era
Example:Unlike most Paleozoic echinoderms, edrioasteroids, including Macraucheniidae, were sessile and lived in the upper sediment layers of the sea floor.
Definition:A class of extinct echinoderms that were colonial and lived in the uppermost sediment layers of the sea floor, characterized by a central disc and radiating branches.
From edrioasteroid
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