Caenorhabditis elegans

Caenorhabditis elegans is a nematode worm. It has a small genome of only 6 chromosome […]


As the sacral vertebrae were unfused, the name meant "Prestwich's flexible lizard" -- Greek kamptos […]


The ancestors of deuterstomes are the extinct yunnanozoans. They had a large mouth, 6 pairs […]

Drosophila melanogaster

Drosophila melanogaster (the common fruit fly) Drosophila has a genome that is slightly larger than […]


Echinoderms have 2 major structural features: Calcified internal plates covered by muscle and thin skin. […]

Phylum Annelida

PhylumClassOverview AnnelidaClitellataSubclass HirudinaeLeeches Habitat: (Freshwater) European medicinal blood-sucking leech. Typically ectoparasites on vertebrates and invertebrates. […]

Phylum Cnidaria

PhylumClassOverview CnidariaHydrozoaOrder HydrodeaHydra Habitat: Freshwater As in most cnidarians, there are two layers: an outer […]

Phylum Platyhelminthes & Nemertea

PhylumClassOverview PlatyhelminthesTurbellariaDugesia Habitat: Benthic in lakes, ponds, streams, and springs all over the world (Freshwater) […]

Phylum Porifera

PhylumClassOverview PoriferaCalcareaGrantia Habitat: marine, in intertidal zones to depths of about 2200m Syconoid sponge (sycon […]

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