A few years ago, about a dozen specimens of an extinct group of echinoderms called carpoids were discovered in the Guttenberg Formation at the south end of this quarry.
(echinoderms; called; carpoids) (about a dozen specimens of an extinct group of echinoderms; were discovered; L:in the Guttenberg Formation; T:at the south end of this quarry; T:A few years ago)
echinoderms about a dozen specimens of an extinct group of echinoderms
called were discovered
carpoids
L:in the Guttenberg Formation T:at the south end of this quarry T:A few years ago