Treatise on Invertebrate Paleontology: Brachiopoda

The Treatise volume on fossil chelicerates: eurypterids, horseshoe crabs, scorpions and spiders, with sections on sea spiders. Systematic descriptions with morphological figures for every genus.

Leif Stormer, Alexander Petrunkevitch and Joel W. Hedgpeth

The Treatise volume on bryozoans, the colonial filter feeders that build lace-like skeletons and turn up all through marine strata. Covers morphology, classification and stratigraphic range genus by genus.

Raymond C. Moore

The revised Treatise volume on graptolites, the colonial hemichordates used to date Ordovician and Silurian rocks. Includes sections on acorn worms and pterobranchs, their closest living relatives.

O. M. B. Bulman

A reference work on the large single-celled organisms that build reefs and date marine basins. It presents revised phylogenies and stratigraphic ranges from the late Paleozoic through the Cenozoic, illustrated with thin sections throughout.

Marcelle K. BouDagher-Fadel