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crayfish

(Encyclopedia) crayfish or crawfish, freshwater crustacean smaller than but structurally very similar to its marine relative the lobster, and found in ponds and streams in most parts of the world?

crawfish

(Encyclopedia) crawfish: see crayfish.

decapod

(Encyclopedia) decapod d?k?p?d? (Gr.,=10 feet), name for invertebrate animals of the crustacean order Decapoda (phylum Arthropoda) including the crabs, the lobsters and crayfish, and the true?

carapace

(Encyclopedia) carapace kr?p?s, shield, or shell covering, found over all or part of the anterior dorsal portion of an animal. In lobsters, shrimps, crayfish, and crabs, the carapace is the part of?

Port Lavaca

(Encyclopedia) Port Lavaca l?v?k?, city (1990 pop. 10,886), seat of Calhoun co., S Tex., on Lavaca Bay; inc. 1907. A deepwater port of entry, it is a shipping point for an agricultural (corn, rice,?

isopod

(Encyclopedia) isopod ?s?p?d?, common name for crustaceans belonging to the order Isopoda and in the same subclass as lobsters and crayfish. Isopods are characterized by their flattened bodies, lack?

mudpuppy

(Encyclopedia) mudpuppy, common name for North American salamanders of the genus Necturus, found in rivers and streams throughout the E United States and SE Canada. The name derives from an erroneous?

Raumur, Ren Antoine Ferchault de

(Encyclopedia) Raumur, Ren Antoine Ferchault de r??myo?or, Fr. r?n? Ntwn f?rsh? d? r??mr, 1683?1757, French physicist and naturalist. He invented an alcohol thermometer (1731) and the?

raccoon

(Encyclopedia) raccoon, nocturnal New World mammal of the genus Procyon. The common raccoon of North America, Procyon lotor, also called coon, is found from S Canada to South America, except in parts?

crustacean

(Encyclopedia) crustacean kr?st?sh?n, primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crustacean species are marine, but there are many freshwater forms. The few groups?