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Diagram of a prawn, with the carapace highlighted in red. A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the underside is called the plastron.
A shed carapace of a lady crab, part of the hard exoskeleton Body structure of a typical crustacean – krill. The body of a crustacean is composed of segments, which are grouped into three regions: the cephalon or head, [5] the pereon or thorax, [6] and the pleon or abdomen. [7]
The carapace (shell) of this small crab is slightly longer than it is wide and grows to a width of 4 cm (1.6 in) in males and 2.8 cm (1.1 in) in females. The rostrum (the part of the carapace in front of the eyes) has two flattened projections which spread apart. The margin of the carapace has a pair of large teeth on either side of the rostrum ...
The family Entocytheridae and many planktonic forms do not have calcium carbonate. [ 5 ] [ 6 ] The hinge of the two valves is in the upper (dorsal) region of the body. Ostracods are grouped together based on shell and soft part morphology, and molecular studies have not unequivocally supported the group's monophyly . [ 7 ]
The brown box crab has been fished in California since at least 1984. [6] Take was minor and largely incidental until the mid 2010s, when landings by mass increased five-fold in 2017 relative to 2016 [7] and remained above 20.5 t (45,000 lb) until 2023. [6]
Growing to about 61 cm (2 ft) in carapace length (measured along the curve), the olive ridley sea turtle gets its common name from its olive-colored carapace, which is heart-shaped and rounded. Males and females grow to the same size, but females have a slightly more rounded carapace as compared to males. [4]
The ultra-rich have mastered the art of hiding wealth, often finding creative ways to shield their money from tax authorities. While offshore accounts in the Cayman Island Swiss banks are well ...
The carapace is leathery and pliable, particularly at the sides. The central part of the carapace has a layer of solid bone beneath it, as in other turtles, but this is absent at the outer edges. Some species also have dermal bones in the plastron, but these are not attached to the bones of the shell. The light and flexible shell of these ...