- There is no clear definition for phylum.
- The plural of phylum is phyla.
- In biology, a phylum is a taxonomic rank below Kingdom and above Class.
- It should be noted that "Phylum" is also the equivalent of the botanical term "Division".
- The number of phyla also varies from author to author.
- With the new analytical techniques available the relationships between different phyla is becoming more clear.
- However due to the changeability of phyla some biologists believe the concept of a phylum should be abandoned in favour of cladistics.
- Some animal groups have even lost their phylum status (see below).
- There are currently 36 recognised animal phyla.
Acanthocephala | Acoelomorpha | Annelida | Arthropoda | Brachiopoda | Bryozoa | Chaetognatha | Chordata | Cnidaria | Ctenophora | Cycliophora | Echinodermata | Echiura | | Entoprocta | Gastrotricha | Gnathostomulida | Hemichordata | Kinorhyncha | Loricifera | Micrognathozoa | Mollusca | Nematoda | Nematomorpha | Nemertea | Onychophora | Orthonectida | Phoronida | Placozoa | Platyhelminthes | Porifera | Priapulida | Rhombozoa | Rotifera | Sipuncula | Tardigrada | Xenoturbellida
Animal Groups Which Have Lost Phylum Rank Status:
Aschelminthes | Craniata | Cephalochordata | Cephalorhyncha | Enterepneusta | Gephyra | Mesozoa | Myxozoa | Pentastomida | Pogonophora | Pterobranchia | Symplasma | Urochordata | Vestimentifera
Posted by ALCHEssMIST.
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