{"id":41958,"date":"2023-10-30T20:58:45","date_gmt":"2023-10-30T15:13:45","guid":{"rendered":"https:\/\/microbenotes.com\/?p=41958"},"modified":"2023-10-30T20:58:48","modified_gmt":"2023-10-30T15:13:48","slug":"theria","status":"publish","type":"post","link":"https:\/\/microbenotes.com\/theria\/","title":{"rendered":"Theria: Characteristics, Diversity, Types, Examples"},"content":{"rendered":"\n

Theria is a subclass of mammals, including placental mammals (Eutheria) and marsupials (Metatheria). Placental mammals have a placenta, nourish their young internally, and include diverse groups like primates and rodents. Marsupials give birth to undeveloped young and continue their development in a pouch.<\/strong><\/p>\n\n\n\n

It evolved around 160 million years ago from non-therian mammals. The exact transition is still under study. The earliest therian fossils date back to the Late Jurassic and Early Cretaceous periods. <\/p>\n\n\n\n

Further, it underwent diversification and expansion during the Cretaceous and Paleogene periods and represented the majority of mammalian species.<\/p>\n\n\n\n

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