Various crinoid fossils hint at possible prehistoric predators. Collecting crinoid fossils on the beach is strictly prohibited. She was required to finish identifying the different taxonomies of crinoid fossils. Ptilometra australis, the passion flower feather star, is a species of crinoid. The largest fossil crinoid on record had a stem in length. Echmatocrinus is a problematic Cambrian animal which resembles a crinoid or an octocoral. A sea cucumber larva is an 'auricularia' while a crinoid one is a 'vitellaria'. Doyle identified a further new species in 2019, a crinoid columnal. The colour of this crinoid is usually some shade of red. Crinoid and related fossils are easily found south of the city. Seirocrinus, Pentacrinites & Isocrinus where various of the main crinoid colonizators of the floating rafts. The crinoid nervous system is divided into three parts, with numerous connections between them. It is rich in fossils&colon; mainly Crinoid ossicles together with gastropods and brachiopods.