The term carapace refers to a dorsal section of an exoskeleton or shell, in a number of animal groups. The word dorsal can refer to many different things. ... An exoskeleton, in contrast to an endoskeleton, is an external anatomical feature that supports and protects an animals body. ...

Crustaceans

Diagram of a prawn, with the carapace highlighted in orange

In crustaceans, the carapace is a part of the exoskeleton that covers the cephalothorax. It is particularly well developed in lobsters and crabs. It functions as a protective cover over the cephalothorax. Image File history File links Penaeus_diagram_carapace. ... Image File history File links Penaeus_diagram_carapace. ... Superfamilies Panaeoidea Aristeidae Benthesicymidae Penaeidae Sicyoniidae Solenoceridae Sergestoidea Luciferidae Sergestidae Prawns are edible, shrimp-like crustaceans, belonging to the sub-order Dendrobranchiata. ... Classes Remipedia Cephalocarida Branchiopoda Ostracoda Maxillopoda Malacostraca The crustaceans (Crustacea) are a large group of arthropods (55,000 species), usually treated as a subphylum. ... The cephalothorax is an anatomical term used of arachnid and malacostracan arthropods for the first major body section. ... Subfamilies and Genera Neophoberinae Acanthacaris Thymopinae Nephropsis Nephropides Thymops Thymopsis Nephropinae Homarus Nephrops Homarinus Metanephrops Eunephrops Thymopides Clawed lobsters comprise a family (Nephropidae, sometimes also Homaridae) of large marine crustaceans. ... Sections Dromiacea Raninoida Heterotremata Thoracotremata The term crab is often applied to several different groups of short (nose to tail) decapod crustaceans with thick exoskeletons, but only members of the Brachyura are true crabs; other taxa, such as hermit crabs, porcelain crabs, king crabs, and horseshoe crabs are, despite superficial...

Tortoises

The scutes of a tortoise's carapace

The carapace is the dorsal, convex part of the shell structure of the tortoise, consisting of an external layer of horny material, divided into large plates known as scutes, which overlie a layer of interlocking bones. This construction allows for a sturdy tortoise. Image File history File links Download high resolution version (847x953, 44 KB) Summary Carapace by Hans Hillewaert after Piper Stone Source file for translation at image:Carapax. ... Image File history File links Download high resolution version (847x953, 44 KB) Summary Carapace by Hans Hillewaert after Piper Stone Source file for translation at image:Carapax. ... Genera Chersina Dipsochelys Furculachelys Geochelone Gopherus Homopus Indotestudo Kinixys Malacochersus Manouria Psammobates Pyxis Testudo The tortoise is a land-dwelling reptile which is of the order Testudines. ... A scute (Latin scutum, shield) is a horny, chitinous, or bony external plate or scale, as on the shell of a turtle or the underside of a snake. ...

The plastron makes up the other half of the tortoise's shell. All tortoises from sea turtles to box (or painted) turtles and desert tortoises can be distinguished by their species-specific arrangement of scutes. afghanistan The plastron is the nearly flat part of the shell structure of a tortoise, what we would call the belly, similar in composition to the carapace; with an external layer of horny material divided into plates called scutes and an underlying layer of interlocking bones. ... Sea turtles (Cheloniidae) are turtles found in all the worlds oceans with the exception of the Arctic Ocean, and some species travel between oceans. ... Genera Chersina Dipsochelys Furculachelys Geochelone Gopherus Homopus Indotestudo Kinixys Malacochersus Manouria Psammobates Pyxis Testudo The tortoise is a land-dwelling reptile which is of the order Testudines. ...