始剑齿虎属(学名:Eusmilus),又名始剑虎属,是一类史前的猎猫科。牠们生存于始新世晚期至渐新世早期的北美洲、欧洲及亚洲。[1]
特征
始剑齿虎的身体很长,高如猎豹,有些甚至长达2.5米,估计重70公斤。[2]牠们有一对长的獠牙,外观像剑齿虎。始剑齿虎的牙齿比较少,只有26只,相比其他食肉目的44只少很多。牠们的颚可以张开达90°,方便牠们利用其獠牙。其下颚有骨质的凸缘来保护獠牙。有发现始剑齿虎与猎虎打斗的化石。[3]
下属物种
本属包括以下物种:[4]
- †Eusmilus adelos Barrett, 2021[5]
- †双齿始剑齿虎 Eusmilus bidentatus (Filhol, 1872)
- †Eusmilus sicarius (Sinclair & Jepsen, 1927)
- †维莱布拉马始剑齿虎 Eusmilus villebramarensis Peigné & Brunet, 2001
参考
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