Crustaceans

Crustaceans

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

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Beijing, China

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Crustaceans

aortic valve

Animals; Crustaceans

Anteroventral opening in heart through which blood is pumped into aorta.

postnauplioid

Animals; Crustaceans

Second larval stage; characterized by all body segments and appendages of adult. Leaves brood pouch shortly before or after hatching to the juvenile stage.

thaumatopsylloid

Animals; Crustaceans

Copepods for which there is a significant difference in size between the fourth and the fifth thoracic somites of the adult

primary plate

Animals; Crustaceans

One of five principal plates on outer surface of body. Includes single carina as well as paired scuta and terga (and occasionally single rostrum).

lacuna

Animals; Crustaceans

In circulatory system, large, longitudinal space between digestive tract and ventral nerve cord in which blood collects before entering gills.

seventh limb

Animals; Crustaceans

7th limb (and 2nd trunk/thoracic limb); controversially considered to be and labeled "3rd trunk limb" by some podocopid specialists; use care in reading descriptions.