<i>Protremaster</i>, a new Lower Jurassic genus of asteroid from Antarctica

Abstract

Abstract A new and well-preserved.asteroid, Protremaster uniserialis (gen. &amp; sp.nov.) is described from the Lower Jurassic (Sinemurian) of Antarctica. This find extends the fossil record of the family Asterinidae and the subfamily Tremasterinae considerably and lends support to the idea that asteroids underwent an important morphological diversification in the late Triassic-early Jurassic.