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Diamondback Terrapin
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Subclass: Anapsida
Order: Testudines
Suborder: Cryptodira
Superfamily: Testudinoidea
Family: Emydidae
Subfamily: Deirochelyinae
Genus: Malaclemys
Gray, 1844
Species: M. terrapin
Binomial name
Malaclemys terrapin
Schoepf, 1793

Emys Concentrica
Testudo concentrata
Testudo ocellata
Testudo terrapin

Terrapins are turtles that live in brackish water. They are named for the diamond pattern on their shells. They eat mollusks, crabs, and fish. Terrapins are sexually dimorphic. Females are much larger than males. Males range between 4 and 5 inches. Females average nearly 7 inches. The largest terrapin on record was a female measuring 9 inches.