... than two hundred specimens of a new genus and species, Lenticidaris utahensis, have been found in the Early Triassic Virgin Formation of Utah. This species belongs to the family Miocidaridae and is unique in having a highly flexible adapical surface. GeoRef, Copyright 2004, American Geological...

... the evolution of this character likely preceded the evolution of many of the synapomorphies that define the echinoid crown group. Family Miocidaridae Durham and Melville, 1957 Miocidaris Döderlein, 1887 Eotiaris Lambert, 1899 , Couvelardicidaris Vadet, 1991 , Procidaris Pomel...

... during the P/Tr interval (e.g., Erwin, 1994). Only two genera, Miocidaris ( Kummel and Teichert, 1966 ) and Lenticidaris ( Kier, 1968 ), of the boundary-crossing family Miocidaridae, have been found in Lower Triassic rocks. The pattern of asteroid (sea star) and ophiuroid (brittle star...

... extinction, as well as Early Triassic echinoids, whose paleoecology is poorly understood during this time interval. Echinoid fossils from the Early Triassic are known primarily from two genera, Lenticidaris and Miocidaris , of the family Miocidaridae ( Twitchett and Oji, 2005 ; Erwin, 2006 ). Aside...

... Miocidaridae, the corona of which is characterized by 20 columns of plates: five pairs of columns of ambulacral plates bearing pores for tube feet, and five pairs of ‘interambulacral’ columns. This pattern has since been inherited by all post-Paleozoic sea urchins, which also display the ocular plate rule...