page_title: Cleidoic egg
hierarchical_section_title: Cleidoic egg
caption_attribution_description: Clutch of round eggs named "Oolithes spheroides" unknown dinosaur from Mongolia, Original Location: Senckenberg-Museum, Frankfurt am Main Photographer: Gerbil November 2006
context_page_description: The cleidoic egg is the type of egg which reptiles and birds lay. Mammalian reproduction has evolved from laying cleidoic eggs to live birth. The cleidoic egg is sometimes called the amniotic egg, because it is characteristic of amniotes.
context_section_description: The cleidoic egg (from Greek kleistos = closed) is the type of egg which reptiles and birds lay. Mammalian reproduction has evolved from laying cleidoic eggs to live birth. The cleidoic egg is sometimes called the amniotic egg, because it is characteristic of amniotes.
caption: Dinosaur eggs from Mongolia
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