Echinodermata

Revalocrinus Jaekel, 1918

Selection of related publications
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I.
Hecker, R. F. 1964. Tip Echinodermata. Iglokožie. Osnovy paleontologii. Iglokožie, gemihordovye, pogonofory i ŝetinkočelûstnye, pp. 23-108.
Regnéll, G. 1948. Swedish Hybocrinida (Crinoidea Inadunata Disparata; Ordovician-Lower Silurian). Arkiv För Zoologi 40 A, 9, 1-27.
References based on distribution