what was the scientific name of the extinct species that we talked about?
"Elephas columbi"
Columbian mammoth
The Columbian mammoth was first scientifically described in 1857 by naturalist Hugh Falconer, who named the species "Elephas columbi" after the explorer Christopher Columbus. 
where could you find columbian mammoth? North America to Costa Rica who described it? Naturalist Hugh Falconer have they been extinct? Yes, it became extinct during the late Pleistocene and early Holocene. the naturalist you mentioned, has he discovered or described anything else? He was the first to discover the Siwalik fossil beds and possibly the first person to discover a fossil ape. what was his connection with calcutta? He was the superintendent of the Calcutta Botanical Garden and professor of botany in the Medical College, Calcutta.
wiki:12737542
Columbian mammoth [SEP] Taxonomy
The Columbian mammoth was first scientifically described in 1857 by naturalist Hugh Falconer, who named the species "Elephas columbi" after the explorer Christopher Columbus. The animal was brought to Falconer's attention in 1846 by Charles Lyell, who sent him molar fragments found during the 1838 excavation of the Brunswick–Altamaha Canal in Georgia, in the southeastern United States. At the time, similar fossils from across North America were attributed to woolly mammoths (then "Elephas primigenius"). Falconer found that his specimens were distinct, confirming his conclusion by examining their internal structure and studying additional molars from Mexico. Although scientists William Phipps Blake and Richard Owen believed that "E.