The Phylum Acoelomorpha is further organized into finer groupings including:
- Subphylum (2): Anthozoa · Turbellaria
- Infraphylum (1): Mucorhabda
- Class (2): Anthozoa · Turbellaria
- Species: ZipcodeZoo has pages for 385 species and subspecies in the Phylum Acoelomorpha.
Anthozoa is a class within the phylum Cnidaria that contains the sea anemones and corals. Unlike other cnidarians, anthozoans do not have a medusa stage in their development. Instead, they release sperm and eggs that form a planula, which attaches to some substrate on which the cnidarian grows. Some anthozoans can also reproduce asexually through budding. More than 6,100 species have been described. [more]
The Turbellaria are one of the traditional sub-divisions of the phylum Platyhelminthes (flatworms), and include all the sub-groups that are not exclusively parasitic. There are about 4,500 species, which range from 1 mm (0.039 in) to 600 mm (24 in) in length. All the larger forms are flat with ribbon-like or leaf-like shapes, since their lack of respiratory and circulatory systems means that they have to rely on diffusion for internal transport of metabolites. However, many of the smaller forms are round in cross section. Most are predators, and all live in water or in moist terrestrial environments. Most forms reproduce sexually and with few exceptions all are simultaneous hermaphrodites. [more]
At least 1,554 species and subspecies belong to the Class Turbellaria.
More info about the Class Turbellaria may be found here.
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