J. C. Harksen
Associate Geologist, South Dakota Geological Survey. Research Geologist, Los Angeles County Museum of Natural History.
Harksen J. C., 1966, Pteranodon sternbergi, a new pterodactyl from the Niobrara Cretaceous of Kansas. Proceedings, South Dakota Academy of Science, 45:74-77.
Abstract
The six known species of Pteranodon from
Kansas are now considered to comprise four distinct subgeneric groups, (1)
small, noncrested forms, the nyctosaurs, Pteranodon (Nyctosaurus) gracilis,
and P. (Nyctosaurus) bonneri, n. sp., (2) large, bulbous-crested forms, the
sternbergias, Pteranodon (Sternbergia) sternbergi subgen. nov. and P. (Sternbergia)
walkeri, n. sp. et subgen. nov., (3) large elongate-crested forms, the
longiceps, Pteranodon (Longicepia) longiceps, subgen. nov., and P. (Longicepis)
marshi, subgen. nov., et nom. nov., and (4) small, shortcrested forms, the
occidentalias, Pteranodon (Occidentalia) eatoni, subgen. nov. et nom. nov.