Crustacean | Definition, Characteristics, Evolution, & Facts …
2024年11月8日 · crustacean, any member of the subphylum Crustacea (phylum Arthropoda), a group of invertebrate animals consisting of some 45,000 species distributed worldwide. Crabs, …
Characteristics of crustaceans | Britannica
crustacean , Any member of the 45,000 arthropod species in the subphylum Crustacea. Distributed worldwide, crustaceans are distinguished by having two pairs of antenna-like …
Crustacean - Anatomy, Adaptations, Diversity | Britannica
2024年11月8日 · National Center for Biotechnology Information - PubMed Central - Terrestrial crustaceans (Arthropoda, Crustacea): taxonomic diversity, terrestrial adaptations, and …
Malacostracan | Definition, Characteristics, Examples, …
malacostracan, any member of the more than 29,000 species of the class Malacostraca (subphylum Crustacea, phylum Arthropoda), a widely distributed group of marine, freshwater, …
Crustacean - Evolution, Paleontology, Adaptations | Britannica
2024年11月8日 · In classifying the Crustacea, a variety of characters are important: the form and extent of the carapace, if present; the number of trunk somites, or segments, and how many …
Crustacean - Aquatic, Arthropod, Exoskeleton | Britannica
2024年11月8日 · The Crustacea as a whole shows great variation in the number of somites and the amount of fusion that has taken place. In the class Malacostraca , which includes the …
Crustaceans Portal | Britannica
Crustaceans are a group of invertebrate animals consisting of some 45,000 species worldwide. Crabs, lobsters, and shrimps are all counted among the subphylum Crustacea. Crustaceans …
crustacean - Kids | Britannica Kids | Homework Help
Crustaceans are animals that usually have a hard covering, or exoskeleton, and two pairs of antennas, or feelers.People around the world eat many types of crustacean—for example, …
list of crustaceans - Encyclopedia Britannica
This is a list of significant crustaceans, which are members of the subphylum Crustacea. They are grouped taxonomically by class, with notable members of each class ordered alphabetically. …
crustacean - Students | Britannica Kids | Homework Help
Crustaceans belong to the subphylum Crustacea, which is part of the phylum Arthropoda, a large group that also includes insects, centipedes, and spiders. Arthropods are characterized by …