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carapace wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 crustaceans 2 arachnids 3 turtles and tortoises 4 see also 5 references 6 external links toggle the table of contents carapace 34 languages العربية অসমীয়া български català čeština deutsch esperanto español eesti فارسی français galego bahasa indonesia ido italiano 日本語 한국어 кыргызча latina limburgs lietuvių latviešu bahasa melayu nederlands polski português română русский simple english shqip svenska தமிழ் українська 粵語 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia part of exoskeleton in some animals cephalic shield redirects here for the head shield in arthropods see cephalon arthropod head diagram of a prawn with the carapace highlighted in red a carapace is the upper section dorsal section of the exoskeleton or shell in a number of animal groups including arthropods such as crustaceans and arachnids and vertebrates such as turtles and tortoises in turtles and tortoises the underside is called the plastron crustaceans edit the molted carapace of a lady crab from long beach new york in crustaceans the carapace functions as a protective cover over the cephalothorax i e the fused head and thorax as distinct from the abdomen behind where it projects forward beyond the eyes this projection is called a rostrum the carapace is calcified to varying degrees in different crustaceans 1 zooplankton within the phylum crustacea also have a carapace these include cladocera ostracods and isopods but isopods only have a developed cephalic shield carapace covering the head arachnids edit see also spider anatomy diagram of an arachnid with the carapace highlighted in purple in arachnids the carapace is formed by the fusion of prosomal tergites into a single plate which carries the eyes ocularium ozopores a pair of openings of the scent gland of opiliones and diverse phaneres 2 in a few orders such as solifugae and schizomida the carapace may be subdivided in opiliones some authors prefer to use the term carapace interchangeably with the term cephalothorax which is incorrect usage because carapace refers only to the dorsal part of the exoskeleton of the cephalothorax alternative terms for the carapace of arachnids and their relatives which avoids confusion with crustaceans are prosomal dorsal shield and peltidium turtles and tortoises edit main article turtle shell a greek tortoise shell opened to show the skeleton from below the carapace is the dorsal back convex part of the shell structure of a turtle consisting primarily of the animal s rib cage dermal armor and scutes 3 4 see also edit armour zoology references edit pentcheff dean ed carapace crustacea glossary natural history museum of los angeles county archived from the original on 23 september 2013 retrieved 17 june 2012 beccaloni jan 2009 arachnids university of california press isbn 978 0 520 26140 2 romer a s 1956 osteology of the reptiles university of chicago press zangerl r 1969 the turtle shell in gans c bellairs d d a parsons t a eds biology of the reptilia vol 1 london academic press pp 311 340 external links edit media related to carapace at wikimedia commons v t e turtle terminology carapace chelonitoxism fibropapillomatosis gular scute jackson ratio plastron pyramiding shell tortoiseshell retrieved from https en wikipedia org w index php title carapace oldid 1370235755 category animal anatomy hidden categories articles with short description short description matches wikidata use dmy dates from april 2021 commons category link from wikidata this page was last edited on 19 august 2026 at 23 12 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents carapace 34 languages add topic