Arctodus-simus

Arctodus simus,the American short-faced bear,was the second largest bear and one of the largest known terrestrial mammalian carnivores. they stood up to 1.8 m at the shoulders and could weigh up to 1 ton.unlike to modern bears of the Ursus genus(except for Polar bears) they were highly predatory and carnivorous.They were the nightmare of any other predators of Pleistocene North America.
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پستانداران ماقبل تاریخ منقرض شده  دیرینه شناسی تکامل فرگشت خرس صورت کوتاه آمریکایی آرکتودوس سایموس فسیل یخبندان پلئیستوسن