| The other diploblastic phylum, the Ctenophora, surprisingly, has not been reported to have septate junctions. |
| Bryozoa is the only major phylum that does not have a fossil record in the Cambrian. |
| Horsehair or gordian worms are unusual invertebrates in the phylum Nematomorpha. |
| In any case, there is molecular evidence to suggest that the Anthozoa are the earliest branch of the phylum Cnidaria. |
| The phylum Cnidaria comprises approximately 10,000 species of tentacle-bearing aquatic animals. |
| In other schemes the phylum Arthropoda is retained and the major taxa are given subphylum or class status. |
