Some brachiopods of the family Retariidae from the Permian of northern Canada

T. G. Sarycheva, and J. B. Waterhouse

1972

Article

Paleontological Journal 6:501-513

Find it at:

Taxa discussed in this work:

• Kutorginella triangulata
• Kutorginella yukonensis
• Thuleproductus
• Thuleproductus crassauritus