Chronotherus

Leaving the alternative earth timelines, there are also some alternative worlds created by entities of great knowledge and great technology that once they landed on earth and brought with them some of the creatures of some time periods, and put them in different terraformed worlds, for... some reasons (as we do with our fauna, that's an habit)

In this case, in a world populated by sauropods since the jurassic, the time and evolutionary pressures lead to the development of very stranges and aberrants forms apart of the common giant herbivores that mankind know.

The Chronotherus is a remain of the first generation of carnivorous sauropods which had been born from small omnivorous forms and despite maintaining its basic morphology, these were managed to modify their digestive system and part of the structure of the jaw to adapt to a more carnivorous diet. So big as an elephant and with a jaw of 2 meters long, these were the apex predators for millions of years until the arive of a second wave of predators came from a more derived group of sauropods. Now the Chronotherus is part an ambush predator part scravenger that feeds on medium and small forms of sauropods, some graceful species and in part carrion.