"Original man" and "of or relating to Tugen Hills" are literal English equivalents of the respectively Tugen and Latin words Orrorin tugenensis. The phrase references a possible predecessor -- about 6,100,000 - 5,700,000 years ago in Kenya's Tugen Hills -- to the bonobos, chimpanzee, gorilla, and human family Hominiae.
"He" is English is the personal pronoun is in Latin.
M in Latin is "1,000" in English.
Quī in Latin means "what" or "which" or "who" in English.
"Mind" in English is mens in Latin.
Testamentum in Latin is "testament" or "will" in English.
Infernus in Latin is "hellish" in English.
"Humility" in English is humilitas in Latin.
"Life" in English is vita in Latin.
"Family" in English is familia in Latin.
The verb est in Latin is "is" in English.
"Short" in English is brevis in Latin.
"With passion" in English is cum ardore in Latin.