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Over a period of months, the soft-shelled tuatara egg absorbs moisture from the soil, swelling up like a balloon until it is a tight-skinned capsule. Then, using its egg tooth — a sharp-pointed spike on the end of its snout — the baby tuatara punctures the shell, and its wet head literally explodes into view.
Crocodiles, most sea turtles and some lizards determine the sex of their offspring by manipulating the temperature of the developing eggs' environment; i.e. they do not have distinct sex chromosomes. Live-bearing reptiles do not regulate sex through incubation temperature.
Although the shells of various reptilian amniotic species vary significantly, they all permit the retention of water and nutrients for the developing embryo. The egg shells of birds (avian reptiles) are hardened with calcium carbonate, making them rigid, but fragile.
The Lepidosauria (/ ˌ l ɛ p ɪ d oʊ ˈ s ɔː r i ə /, from Greek meaning scaled lizards) is a subclass or superorder of reptiles, containing the orders Squamata and Rhynchocephalia. Squamata also includes lizards and snakes. [2]
The marine iguana (Amblyrhynchus cristatus), also known as the sea iguana, saltwater iguana, or Galápagos marine iguana, is a species of iguana found only on the Galápagos Islands (Ecuador). Unique among modern lizards, it is a marine reptile that has the ability to forage in the sea for algae, which makes up almost all of its diet. [3] .
24 paź 2024 · Certain lizards, particularly some species of Gekkonidae, are known to be communal egg layers, with many females depositing their eggs at the same site. In addition, it appears that the same individual female may return to a particular site throughout her lifetime to deposit clutches of eggs.
Marine Iguanas, found only on the Galapagos Islands, are the only lizards on Earth that spend time in the ocean. Learn more about them and how you can help protect them.
