The most common animal macrofossils in the rock record are the reamins of animals without backbones - the invertebrates. This category is for any website dealing with the study of individual invertebrate fossil groups.
This category is for any websites which deals specifically with the fossil record of arthropods. Please examine the subcategories for more specific taxa.
This category is for websites that deal specifically with the fossil record of graptolites, an extinct colonial taxon presumably related to hemichordates.
This category is for any website which deals specifically with the fossil record of mollusks. Please submit websites about individual molluscan taxa to the appropriate subcategory.
This category is for any website which deals specifically with the fossil record of sponges. Sponges are animals, most of which live in salt water, attached to another surface, so they remain in one place. Their scientific classification is kingdom animalia and phylum porifera.
Originally, humans used sea sponges for cleaning, but now cleaning sponges are made of synthetic materials.