where did the above mentioned term related to 'group of species' originate from?
It comes from the Latin ' ("origin, type, group, race"), a noun form cognate with ' ("to bear; to give birth to")
Genus
The term "genus" comes from the Latin ' ("origin, type, group, race"), a noun form cognate with ' ("to bear; to give birth to"). 
what is guadalcanal campaign? A military campaign on and around the island of Guadalcanal in the Pacific theater of World War II where is this mentioned island located? Guadalcanal Province of the Solomon Islands, located in the south-western Pacific, northeast of Australia what are some fauna found here? Phalanger or grey cuscus, bats, rodents and estuarine crocodiles what do you know about the former mentioned animal? It is a genus of possums
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Genus [SEP] Etymology
The term "genus" comes from the Latin ' ("origin, type, group, race"), a noun form cognate with ' ("to bear; to give birth to"). Linnaeus popularized its use in his 1753 "Species Plantarum", but the French botanist Joseph Pitton de Tournefort (1656–1708) is considered "the founder of the modern concept of genera".