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Description
Therizinosauridae is a subfamily of derived (advanced) therizinosauroid dinosaurs whose fossil remains have been dated to the Mid-to-Late Cretaceous period (100 to 70 mya).

Even though representative fossils have only been found throughout China, Mongolia, and the United States, the range of Therizinosauridae is believed to have spanned much of the supercontinent of Laurasia at its height.

The current scientific consensus is that therizinosaurids evolved from small, bird-like maniraptorans, and thus they fall within the coelurosaurian clade called Maniraptora.

They are considered to be the best-regarded candidate for the emergence of herbivory within Theropoda.

Description
Therizinosauridae is a subfamily of derived (advanced) therizinosauroid dinosaurs whose fossil remains have been dated to the Mid-to-Late Cretaceous period (100 to 70 mya).

Even though representative fossils have only been found throughout China, Mongolia, and the United States, the range of Therizinosauridae is believed to have spanned much of the supercontinent of Laurasia at its height.

The current scientific consensus is that therizinosaurids evolved from small, bird-like maniraptorans, and thus they fall within the coelurosaurian clade called Maniraptora.

They are considered to be the best-regarded candidate for the emergence of herbivory within Theropoda.