Magnofossacrinus, a New Genus of Cladid Crinoids (Crinoidea, Echinodermata) from the Moscovian (Pennsylvanian) of Moscow Region

Cirrus versus radice: a brief study of confused crinoid terminology

“…Herein, I refer to one real example, amongst many, chosen only because it mis‐references one of my own publications and, in so doing, demonstrates something of the persistent confusion. The recent worthy contribution of Mirantsev (2019) concerns a new species of Pennsylvanian cladid crinoid. Throughout, Mirantsev refers to cirrus, cirri and terms like cirrus socket.…”

“…This terminological confusion is further compounded (Mirantsev 2019, p. 495) by mis‐reference to that of Donovan & Birtle (2011). The terminology used in the latter paper (p. 170) is limited – radice scars, radice canal and radices.…”

“…That is, this interpretation did not follow the publication of Donovan & Birtle who referred to radices, not branching radices in any shape and form. Mirantsev (2019) equates an unbranched root structure with a cirrus, which it is not in this case (Donovan 1993).…”