TY  - JOUR
A1  - Meek, F. B.
A1  - Worthen, A. H.
JO  - Proceedings of the Academy of Natural Sciences of Philadelphia
SP  - 41
EP  - 53.
C1  - 1865: 41-53.
TI  - Notice on some new types of organic remains from the Coal Measures of Illinois
UR  - https://www.biodiversitylibrary.org/page/26287776
VL  - 1865
PY  - 1865
Y2  - 2026-07-20
ER  -