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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 ...
A Greek tortoise shell opened to show the skeleton from below Main article: Turtle shell 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 .
The shape of the shell is from its evolutionary process, which caused many microstructures to appear to aid survival and motion. Shell shape allows the animal to escape predatory situations. Microstructures can include the scutes mentioned prior or the ribs found internally of the shell. Many ribs can be found within the shell and throughout ...
The carapace of L. punctata viewed from above is broadly oval in adults, but more circular in young, widest just anterior to hind limbs. The width of the disc is 77-86% of its length, the carapace is moderately arched, shell height is 35.0-40.5% of carapace length, the margin of the carapace is smooth and slightly flared posteriorly, the marginal bones are not united with the pleurals, the ...
Tortoise with cuttlebone Fossil cuttlebone of the Pliocene species Sepia rugulosa Fossilised cuttlebone-like gladius of Trachyteuthis [1]. Cuttlebone, also known as cuttlefish bone, is a hard, brittle internal structure (an internal shell) found in all members of the family Sepiidae, commonly known as cuttlefish, within the cephalopods.
The world’s oldest tortoise has lived through two world wars, witnessed the rise and fall of the British Empire, and has just turned 190 years old.
Diego, the giant tortoise who saved his species, finally goes home. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
Another of their gods, Hermes, invented a seven-stringed lyre made with the shell of a tortoise. [175] In the Shang dynasty Chinese practice of plastromancy , dating back to 1200 BCE, oracles were obtained by inscribing questions on turtle plastrons using the oldest known form of Chinese characters , burning the plastron, and interpreting the ...