InGen Database Description
The Antlers Formation is large stratum underlying parts of Oklahoma, Arkansas and Texas. The formation primarily consists of mudstone, clays and sandstone. It dates to around 115 million years ago and is roughly 150m thick. A number of different fish, reptiles, amphibians and early mammals have been found here but the most famous finds are those of the dinosaur Acrocanthosaurus. One specimen recovered here is the largest so far discovered and also contains the only complete skull.
The formation is a contemporary of the nearby Twin Mountains Formation and they are both contained within the Trinity Group of strata. Acrocanthosaurus and certain other dinosaur fossils can be found in both formations, indicating they are examples of a similar environment and time period.
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