A group of larviform crinoids from lower Pennsylvanian strata of the eastern interior basin
By: by J. Marvin Weller
Series: Illinois State Geological Survey Report of investigations -- no. 21
Publisher: [Jefferson printing & stationery Co., Springfield]
Published: 1930
Place of publication: Urbana, Ill
Language: eng
Number of pages: 43
Subjects: Fossil Crinoidea; Paleontology
Notes: At head of title: State of Illinois. Department of registration and education. Division of the State geological survey.

Bibliography: p. 5-6.