Fossils

Fossils was the original book by Cyril Walker and David Ward, with photography by Colin Keates. This book is very descriptive and has a diverse collection of fossil animals and plants between it covers (in fact all the fossils in the book come from the collections of the Natural History Musein in London, UK). Published in 1992, the book is actually not as dated as it looks, and can be quite helpful at identifying any fossils you have found (it may not be the exact thing, but it may be similar).

Invertebrates
Foraminifera

Sponges

Bryozoa

Worms

Graptolites

Corals

Trilobites

Crustacea

Chelicerata

Insects

Brachiopods

Bivalves

Scaphopods & Chitons

Gastropods

Nautiloids

Ammonoidea

Ammonites

Belemnites & Squids

Crinoids

Echinoids

Asteroids

Ophiuroidea

Blastoids

Cystoids

Carpoids

Trace Fossils

Problematica

Vertebrates
Agnathans

Placoderms

Condrichthyans

Acanthodians

Osteichthyans

Amphibians

Anapsid Reptiles

Diapsid Reptiles

Dinosaurs

Birds

Synapsid Reptiles

Mammals

Plants
Algae

Early Land Plants

Hepatophytes

Sphenopsids

Ferns

Lycopods

Pteridosperms

Bennettites

Progymnosperms

Cordaitales

Conifers

Ginkgos

Dicotyledonous

Angiosperms

Monocotyledonous Angiosperms