biohermn.

1928 E. R. Cumings & R. R. Shrock in Bull. Amer. Geol. Soc. 39 599 Coral reef encourages the misconception that reefs are largely made of coral, whereas many of them were formed by other organisms... The authors have for some time used the term ‘bioherm’.

1954 W. D. Thornbury Princ. Geomorphol. xviii. 480 The term ‘bioherm’ (organic mound) is a more appropriate name for such structures, but they have been called reefs so long that the name persists despite its inadequacy.

1979 R. Anderton et al. Dynamic Stratigr. Brit. Isles x. 131/2 Although patches of in situ bioherm occur, the dominant limestone-building process was due to variable currents winnowing around these bioherms causing the production of spreads of skeletal-lime sands and muds.

2003 Jrnl. Paleontol. 77 1028/1 Collins and Wierzbowski..described several species of tiny crabs preserved within sponge bioherms and biostromes from the Jurassic of Poland.

1937 Amer. Midland Naturalist 18 473 After the biohermal nature of the ‘domes’ became known, the Kentland complex aroused new interest.

1963 Geol. Mag. 100 296 The Ardagh spongolites appear to have been laid down as a biohermal deposit.

2007 E. J. Petuch & C. Roberts Geol. Everglades v. 122 Large calcareous biohermal masses of..polychaete worms are often present.