Ontos side view
Geologic period: Modern
Ontos, a tracked armored vehicle carrying six 106 mm recoilless rifles.
About this image:
The Marine Corps Ontos, Greek for "the thing", was a rarity among armored vehicles from the outset: Produced in small quantities and relatively obscure, it is not well known even among Viet Nam War-era veterans, but is well loved by its USMC crew members.