TY  - RPRT
TI  - Stenothecoida, a proposed new class of Cambrian Mollusca
AU  - Ellis L. Yochelson
PY  - 1969
DO  - 10.1111/j.1502-3931.1969.tb01250.x
UR  - https://pubs.usgs.gov/publication/70224295
ID  - 70224295
ER  -