Arachnida. P42-P162 in Moore, R.C. (ed.) Treatise on Invertebrate Paleontology. ... Evolutionary morphology and phylogeny of the Arachnida. Cladistics 6: 1-38. ...
Full article ...
Arachnida
the class contains scorpions, spiders, ticks, mites, and king crabs. They lack antennae, usually have four pairs of walking legs and with the exception of the king crab, Limulus, are air-breathing.
Arachnida (Spiders, scorpions and allies)
Eurypterida (Sea scorpions: Extinct)
Xiphosura (King crabs) ...
arachnida The class of chelicerate arthropods whose members are mostly terrestrial, possess book lungs, or tracheae, and usually have four pairs of walking legs as adults. Spiders, scorpions, ticks, mites, and harvestmen.
The class Arachnida includes over 60,000 described species (and most likely a very large number of as yet undescribed ones) of spiders (around 35,000 species), mites and ticks (25,000 species), scorpions (1200 species), and other forms.
Mite: Any of several minute invertebrates belonging to the phylum Arthropoda, class Arachnida.
Morphology: Form or structure of an organism.
Multivoltine: Having more than one brood or generation per season.
Arachnida (← links)
Helminthes (← links)
Molluscoidea (← links)
Gastropoda (← links)
Echinodermata (← links)
Holothurioidea (← links)
Infusoria (← links)
Generical (← links)
Exchequer (← links)
Pancreatic (← links) ...
Arabidopsis thaliana Arachidonic acid Arachnida Archaea Archegonia[in ferns] [in mosses] Archenteron ARF1 (Auxin response factor 1) Arginine[substrate for NO synthases] Arrestins Arteries and Arterioles Arteriosclerosis Arthropods Ascidians ...
 See also: Invertebrate, Species, Animal, Plant, Character
|
