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Há 1 dia · This list of ammonites is a comprehensive listing of genera that are included in the subclass †Ammonoidea, excluding purely vernacular terms. The list includes genera that are commonly accepted as valid, as well as those that may be invalid or doubtful ( nomina dubia ), or were not formally published ( nomina nuda ), as well as junior synonyms of more established names, and genera that are ...
Há 1 dia · Marsupials are extremely altricial animals, needing to be intensely cared for immediately following birth ( cf. precocial ). Newborn marsupials lack histologically mature immune tissues [45] [46] [47] and are highly reliant on their mother's immune system for immunological protection., [48] as well as the milk.
