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The turtle shell is a shield for the ventral and dorsal parts of turtles (the order Testudines), completely enclosing all the vital organs of the turtle and in some cases even the head. [1] It is constructed of modified bony elements such as the ribs, parts of the pelvis and other bones found in most reptiles.
The largest subspecies is the western painted turtle (C. p. bellii), which grows up to 26.6 cm (10 in) long. [27] [28] Its top shell has a mesh-like pattern of light lines, [29] and the top stripe present in other subspecies is missing or faint. Its bottom shell has a large colored splotch that spreads to the edges (further than the midland ...
Chelid turtles have unique shell morphology. ... some cryptodire turtles. The scute pattern is a unique feature of Pleurodira and can be used to immediately identify ...
The patterns on the head can be important characters in identifying the various species. The common name "map turtle" is derived from the intricate patterns on their shells that are suggestive of topographical maps, although the patterns are more apparent in some species than others, and often become obscure in older specimens. Some species are ...
Underside of B. gaffneyi shell. Turtle shells are a key feature in the identification and differentiation of turtles. The surface texture of a Basilemys carapace consists of many small, shallow pits that are arranged in a chain-link pattern. [4] These shallow pits are bordered by low, tetrahedal protrusions. [4]
Eastern box turtles have a high, domelike carapace and a hinged plastron that allows total shell closure. Their shell has a middorsal keel that smooths out with age. [5] The carapace can be of variable coloration but is normally brownish or black and accompanied by a yellowish or orangish radiating pattern of lines, spots, or blotches.
A tortoiseshell ornament from Micronesia Cabinet with tortoiseshell veneers French singing bird box with a case made out of tortoiseshell.. Tortoiseshell or tortoise shell is a material produced from the shells of the larger species of tortoise and turtle, mainly the hawksbill sea turtle, which is a critically endangered species according to the IUCN Red List largely because of its ...
Aquatic turtles have flatter, smoother shells that allow them to cut through the water. Sea turtles in particular have streamlined shells that reduce drag and increase stability in the open ocean. Some turtle species have pointy or spiked shells that provide extra protection from predators and camouflage against the leafy ground. The lumps of a ...