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Description
Year: 185 Million Years Onward
Location: South America
59 million years prior to this point, an asteroid struck Earth, devastating many of the dominating animals on Earth. South America, while not hit as hard, was still affected, losing almost all of its herbivorous creatures, along with a good portion of its carnivores. Now, though, a new breed of predator and prey has risen from the ashes.

Leptisuchus- This genus of reptilian herbivores are the derived descendants of caimans. During the long period of warmth after humans, caimans were able to expand their niches into a few unique forms, like tiny ant-eaters, to piscivorous ambush predators, even a few endothermic, erect, predators. With the cooling that followed, many disappeared, or were restricted to the Northern parts of the continent, however, there appeared a lineage of ectothermic caimans that could survive in the temperate regions. They held a niche much like that of a raccoon, being opportunistic omnivores. They also had adapted to the winters by digging small dens and hibernating in them. They were able to make it out of the Cenozoic, despite being slightly reduced in numbers. Afterwards, they proliferated in several niches, one of them including herbivorous. They would end up being the most successful ones. This species is noted for its crest, divided into 3 portions, which, while present in both sexes, is more prominent in males. They're 1 meter tall, and weigh around half a ton. They are found in the Eastern part of the continent, around plains or wooded areas. They feed off of the top of bushes or the lower parts of trees. They don't chew food, rather they possess a gizzard like a sauropod. They are found in small harems led by a male.

Carnasseram- One group that has radiated after the last major extinction event was the passerine birds, as they remained fairly conservative in morphology outside of Antarctica, but now have taken up new vacant niches. These carnivores are descended from insectivorous semi-terrestrial sparrows. These flightless birds are one of the prime predators of the South American plains, and they are 3 feet tall, and possess an interesting beak. On both sides, there are 2 ridges, which are used for stabbing or delivering a quick blow to their prey. These originally came display structures upon the sides of their beaks. This species hunts across the South American plains, in packs of around 15, so they can hunt prey much larger than them. They breed towards the beginning of the wet season.

Description
Year: 185 Million Years Onward
Location: South America
59 million years prior to this point, an asteroid struck Earth, devastating many of the dominating animals on Earth. South America, while not hit as hard, was still affected, losing almost all of its herbivorous creatures, along with a good portion of its carnivores. Now, though, a new breed of predator and prey has risen from the ashes.

Leptisuchus- This genus of reptilian herbivores are the derived descendants of caimans. During the long period of warmth after humans, caimans were able to expand their niches into a few unique forms, like tiny ant-eaters, to piscivorous ambush predators, even a few endothermic, erect, predators. With the cooling that followed, many disappeared, or were restricted to the Northern parts of the continent, however, there appeared a lineage of ectothermic caimans that could survive in the temperate regions. They held a niche much like that of a raccoon, being opportunistic omnivores. They also had adapted to the winters by digging small dens and hibernating in them. They were able to make it out of the Cenozoic, despite being slightly reduced in numbers. Afterwards, they proliferated in several niches, one of them including herbivorous. They would end up being the most successful ones. This species is noted for its crest, divided into 3 portions, which, while present in both sexes, is more prominent in males. They're 1 meter tall, and weigh around half a ton. They are found in the Eastern part of the continent, around plains or wooded areas. They feed off of the top of bushes or the lower parts of trees. They don't chew food, rather they possess a gizzard like a sauropod. They are found in small harems led by a male.

Carnasseram- One group that has radiated after the last major extinction event was the passerine birds, as they remained fairly conservative in morphology outside of Antarctica, but now have taken up new vacant niches. These carnivores are descended from insectivorous semi-terrestrial sparrows. These flightless birds are one of the prime predators of the South American plains, and they are 3 feet tall, and possess an interesting beak. On both sides, there are 2 ridges, which are used for stabbing or delivering a quick blow to their prey. These originally came display structures upon the sides of their beaks. This species hunts across the South American plains, in packs of around 15, so they can hunt prey much larger than them. They breed towards the beginning of the wet season.