inverts
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Arthropods
Arthropods: The Incredible Diversity of Phylum Arthropoda Etymology: From the Greek Arthron a joint and Pous for foot. Characteristics of the Arthropoda: Bilaterally symmetrical (in…
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The Polychaeta: Worms, Worms and More Worms
The Polychaeta is the largest and the most diverse of the Annelid groups. Most species are marine, but some have…
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Oligochaeta: The Anatomy & Reproduction Of The Humble Earthworm
The subclass Oligochaeta contains all the animals commonly thought of as ‘earthworms’. Long thin worms with no obvious appendages to…
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Hirudinea: Order Of Leeches
Hirudinea: Order Of Leeches Leeches, yuck. This is a common response in a world where most people think of leeches…
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Annelida: The Amazing World of Earthworms & Marine Worms
Etymology of Annelida:- From the Latin Annellus, a little ring. Characteristics of Annelida: Bilaterally symmetrical and vermiform. Body has more than two cell…
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Coeloms and Pseudocoeloms 101: Body Cavities Explained
Coeloms and Pseudocoeloms Throughout these invertebrate pages you will find reference to animals as being Coelomate, Pseudocoelomate and Acoelomate. All…
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Turbellaria: Tiny, Non-Parasitic Flatworms Including Acoela & Tricladida
The Turbellaria are free living or commensal with larger animals (though it is possible a few species now thought to…
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Flukes: Horrors Of The Parasitic Subclass Digenea
The Digenea are a large and successful group of parasites, including the infamous “flukes”. There are about 6,000 species known…
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Monogenea: Class of Endoparasites With Multiple Hosts
The class monogenea is distinguished by most of its members being ectoparasite (meaning they live on the outside of their…
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Class Trematoda and Sub-Class Aspidogastrea
Class Trematoda and Sub-Class Aspidogastrea The class Trematoda contains two subclasses. One of which, the Digenea is a large and successful…
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