Faunally

1949, Donald E. White, B: Antimony Deposits of Soyatal District, State of Queretaro, Mexico, in Bulletin 960: Geologic Investigations in the American Republics, 1947, US Geological Survey, page 190, In the vicinity of Santa Rosalía, however, the Pliocene sediments may be divided lithologically and faunally into three formations, separated by unconformities and representing the lower, middle, and upper Pliocene respectively, and the relation of these formations to the type Salada is unknown.

Source: wiktionary

The parallel development of the once-contiguous Cambro-Ordovician successions provides a framework in which to place the faunally barren strata of the Durness Group.

Source: wiktionary

2008, Emily Kristin Holmquist, Paleobiogeography of Devonian Bryozoa in Laurussia, Masters Thesis, Michigan State University, page 20, Faunally, this biome is supported by the genus Ptilodictya, with a CI of 0.5, and Coelocaulis is endemic to the two Maryland localities.

Source: wiktionary