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The shell of a turtle is unique among vertebrates and serves to protect the animal and provide shelter from the elements. [13] [14] [15] It is primarily made of 50–60 bones and consists of two parts: the domed, dorsal (back) carapace and the flatter, ventral (belly) plastron. They are connected by lateral (side) extensions of the plastron ...
Chelid turtles have unique shell morphology. ... The scute pattern is a unique feature of Pleurodira and can be used to immediately identify a shell as belonging to ...
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.
Proganochelys had been known as the most primitive stem-turtle for over a century, until the novel discovery of Odontochelys in 2008. [1] Odontochelys and Proganochelys share unique primitive features that are not found in Casichelydia, such as tooth-like structures on the pterygoid and vomer and a plate-like coracoid. [1]
Three possibilities have arisen from their unique characteristics: agassizii is a separate species from C. mydas, it is a subspecies of green sea turtle, or it is simply a color mutation. [59] These facts have led to the debate over binomial separation however due to the significance of the DNA testing results there have been no distinctions ...
Turtles have to find the ocean by themselves and on their journey from land to sea, they encounter a lot of plastic. Some even get trapped in the plastic and die from lack of resources and from the sun being too hot. Sea turtles eat plastic bags [152] because they confuse them with their actual diet, jellyfish, algae and other components. The ...
In contrast to their earth-bound relatives, tortoises, sea turtles do not have the ability to retract their heads into their shells. Their plastron, which is the bony plate making up the underside of a turtle or tortoise's shell, is comparably more reduced from other turtle species and is connected to the top part of the shell by ligaments without a hinge separating the pectoral and abdominal ...
Olive ridley turtles exhibit two different nesting behaviours: solitary nesting (the most prevalent) and synchronized mass nesting, termed arribadas. [11] They are unique among sea turtle species in the latter behaviour, for which they are best known. Females return to the same beach from where they hatched, to lay their eggs.