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Yinotheria is a proposed basal subclass clade of crown mammals uniting the Shuotheriidae, an extinct group of mammals from the Jurassic of Eurasia, with Australosphenida, a group of mammals known from the Jurassic to Cretaceous of Gondwana, which possibly include living monotremes. [3]
The class Mammalia is divided into two subclasses based on reproductive techniques: egg-laying mammals (yinotherians or monotremes - see also Australosphenida), and mammals which give live birth . The latter subclass is divided into two infraclasses: pouched mammals ( metatherians or marsupials ), and placental mammals ( eutherians , for which ...
[25] [26] Much like newborn marsupials (and perhaps all non-placentals [27]), newborn monotremes, called "puggles", [28] are larval- and fetus-like and have relatively well-developed forelimbs that enable them to crawl around. Monotremes lack teats, so puggles crawl about more frequently than marsupial joeys in search of milk. This difference ...
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Australia is home to two of the five extant species of monotremes and the majority of the world's marsupials (the remainder are from Papua New Guinea, eastern Indonesia and the Americas). The taxonomy is somewhat fluid; this list generally follows Menkhorst and Knight [ 1 ] and Van Dyck and Strahan, [ 2 ] with some input from the global list ...
Download QR code; Print/export Download as PDF; Printable version; ... Pages in category "Monotremes" The following 10 pages are in this category, out of 10 total.
This WikiProject aims to help organise our collection of entries about monotremes (egg-laying mammals) and marsupials (pouch-rearing mammals). These articles should all be contained in either the Category:Monotremes or Category:Marsupials .
Prototheria (/ ˌ p r oʊ t ə ˈ θ ɪər i ə,-t oʊ-/, PROH-toh-THEER-ee-ə; [1] from Ancient Greek πρώτος prṓtos "first" and θήρ thḗr "wild animal") is an obsolete subclass of mammals which includes the living Monotremata and to which a variety of extinct groups, including Morganucodonta, Docodonta, Triconodonta and Multituberculata, have also been assigned.