Extant Monotremata is an egg-laying mammal Order only found in Australia and New Guinea and is comprised of the genera, Ornithorhynchus, Tachyglossus and Zaglossus. Monotremes have been observed to have a large amount of variation as seen in the number of subspecies and species that were previously recognised for the taxa. This thesis studied the factors that may be responsible for this amount of variation. The thesis was broadly divided into five factors hypothesised to affect the variation of...[Show more]
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