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Most known animal [https://en.wikipedia.org/wiki/Phylum phyla] appeared in the [[fossil]] record as marine species during the [http ...ceptions, most notably the [https://en.wikipedia.org/wiki/Sponge sponges] (Phylum Porifera) and Placozoa, animals have bodies differentiated into separate ti

...ory in [[biological]] [[taxonomy]] ranking above the order and below the [[phylum]] or division

# [[Phylum]]

With a few exceptions, most notably the [[sea sponge|sponge]]s (Phylum Porifera), animals have bodies differen­tiated into separate [[biological

...rs, in an event called the [[Cambrian explosion]]. Here, the majority of [[phylum (biology)|types]] of modern animals evolved, as well as unique lineages tha