Redirect Notice
 The previous page is sending you to https://www.alamy.com/chordate-anatomy-chordata-anatomy-comparative-ornithorhynchus-fig-20ornithorhynchus-is-a-repre-sentative-of-the-most-primitive-group-of-mammals-the-monotremes-as-an-egg-laying-mammal-it-bridges-over-the-gulf-separating-reptiles-and-mammals-fig-21opossum-the-typical-genus-of-didelphians-redrawn-after-newman-sub-class-monotremata-prototheria-the-monotremes-or-ornithodelphians-are-egg-laying-mammals-with-a-cloaca-teats-are-lacking-ornithorhynchus-the-duck-bill-of-australia-is-the-best-known-genus-and-there-are-two-species-of-the-spiny-anteater-echidna-there-seem-to-image234918443.html.

 If you do not want to visit that page, you can return to the previous page.