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Kier, P. M. 1965. Evolutionary trends in Paleozoic echinoids. Journal of Paleontology 39, 436-465.
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Kier, P. M.
1965
Evolutionary trends in Paleozoic echinoids
Journal of Paleontology
39: 436-465
Publication
from Kier & Lawson (1978)
In evolution of the Echinocystoidea the test becomes flattened, the ambulacra expand adorally, pores shift from near the perradial suture to near the adradial suture, tubefeet become enclosed, internal enclosures of radial water vessels are lost, number o
Date action by
Hyattechinus laudoni Kier, 1965 † (original description)
Lovenechinus gordoni Kier, 1965 † (original description) Miocidaris connorsi Kier, 1965 † accepted as Eotiaris connorsi (Kier, 1965) † (original description) Palaechinus merriami Kier, 1965 † (original description) Polytaxicidaris virata Kier, 1965 † (original description) Pronechinus Kier, 1965 † (original description) Pronechinus anatoliensis Kier, 1965 † (original description) |