Porifera

... about 20 Phoronida Zeus's mistress Horseshoe worms U-shaped gut 20 Placozoa Plate animals 1 Platyhelminthes Flat worms Flat worms about 25,000[10] Porifera Pore bearer Sponges Perforated interior wall over 5,000 modern Priapulida Penis Priapulid worms Retractable proboscis surrounded by papillae ...

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... of fossils representing all except two of the living [animal] phylathat had durable (easily fossilizable) skeletons. One of those two phyla is the Porifera (sponges), which was present in the fossil record at an earlier time. The other is the Bryozoa, a phylum that contains some soft-bodied groups ...

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One of those two phyla is the Porifera (sponges), which was present in the fossil record at an earlier time. There you have it again, i assume you have got this from a reliable source, we have found links, in my opinion its only a matter ...

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... two of the living animal phyla abrupt appearance of fossils representing all except two of the living animal phyla One of those two phyla is the Porifera (sponges), which was present in the fossil record at an earlier time. Few of the known late Precambrian animals have been closely related to ...

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... fossils representing all except two of the living [animal] phyla that had durable (easily fossilizable) skeletons. One of those two phyla is the Porifera (sponges), which was present in the fossil record at an earlier time. The other is the Bryozoa, a phylum that contains some soft-bodied groups ...

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