1. Untersuchungen über den Bau der Brachiopoden / von Friedrich Blochmann.
2. The embryology of a brachiopod, Terebratulina septentrionalis Couthouy;Conklin;Proc Am Philos Soc,1902
3. The ultrastructure of the larva of Neocrania anomala (Brachiopoda);Grobe;Zoology,2000
4. On the organisation of the Brachiopoda;Hancock;Philos Trans R Soc,1859