Crustaceans

Crustaceans

Any member of the class of arthropods that includes lobsters, crabs, shrimps, wood lice, water fleas, and barnacles.

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alice1

Beijing, China

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Crustaceans

finishing arthrodial membrane

Animals; Crustaceans

An arthrodial membrane which completes a segment and whose formation defines the location of the segment along the proximodistal axis of a limb. The finishing arthrodial membrane usually is the ...

epizoism

Animals; Crustaceans

An association in which animals live on others for substrate requirements.

proximodistal axis

Animals; Crustaceans

An imaginary line through the insertion of a limb on its somite, and the tip of the limb; on biramous limbs, the proximodistal axis is duplicated through each ramus.

anterioposterior axis

Animals; Crustaceans

An imaginary line through the rostral area of the head and the anal segment.

orbital margin

Animals; Crustaceans

Anterior border of the carapace, often continuing to the eye.

orbital border

Animals; Crustaceans

Anterior margin of the orbital region and the free margin below the eye anterior to the subhepatic region.

pleosome

Animals; Crustaceans

Anterior of two subdivisions (pleosome, urosome) of abdomen (pleon). Consists of three somites (pleomeres), each bearing pair of appendages (pleopods).