paleechinoidea Meaning, Definition & Usage

Pa`le*ëch`i*noi"de*a noun plural (Also<
  • Paleechinoidea
  • Paleëchinoidea
)
Etymology
NL. See Paleo-, and Echinoidea.
Definitions
  1. (Zoöl.) An extinct order of sea urchins found in the Paleozoic rocks. They had more than twenty vertical rows of plates. Called also Palæechini. Written also Palæechinoidea.

Webster 1913