Chalicotheriidae, from Ancient Greek χάλιξ (khálix), meaning "gravel", and θηρίον (theríon), meaning "beast", is an extinct family of herbivorous, odd-toed ungulate (perissodactyl) mammals that lived in North America, Eurasia, and Africa from the Middle Eocene to the Early Pleistocene.

爪獸科 （Chalicotheriidae）是 奇蹄目 下的一類 草食性 哺乳動物，於4620萬年前 始新世 中期從細小及像 始祖馬 的森林動物 演化 而來，生存於4.62 百萬年前 至 781,000 千年前 [3] 的 北美洲 、 歐亞大陸 與 非洲，其中 奈王爪獸屬 為最晚滅絕的爪獸科成員 [4]。 很多爪獸科，如 石爪獸屬 及 爪獸屬，都有 馬 的大小。 漸新世 晚期前，牠們主要分為兩類：一類是生活在草原，而另一類則較適應林地。 牠們與已滅絕的 雷獸 及現今的馬、 犀牛 及 貘 有關。 [5] 爪獸科不像現今的 奇蹄 …

Chalicotherium, from Ancient Greek χάλιξ (khálix), meaning "gravel", and θηρίον (theríon), meaning "beast", is a genus of extinct odd-toed ungulates of the order Perissodactyla and family Chalicotheriidae. The genus is known from Europe and Asia, …

Chalicotherioidea is an extinct superfamily of clawed perissodactyls (odd-toed ungulates) that lived from the early Eocene to the early Pleistocene subepochs. [1] . Based on the fossil record they emerged and thrived largely in Eurasia, although specimens have been found in both Africa and North America.

Chalicotheriidae: The Chalicotheres are perhaps the most bizarre perissodactyls to have ever lived. While other perissodactyls possess hooves, Chalicotheres have secondarily evolved claws. Claws and hooves are both made from keratin (the same substance that your hair and fingernails are made of), which does not fossilize.

Chalicotherium, genus of extinct perissodactyls, the order including the modern Horse and the infamous Rhinoceros. Fossil remains of the genus are common in deposits of Asia, Europe, and Africa from the Miocene Epoch (23 to 5.3 million years ago).

2021年10月24日 · Chalicotheres (Mammalia: Perissodactyla) are peculiar odd-toed animals that first appeared in the Eocene of Asia; the family Chalicotheriidae is first known from the Oligocene and diversified into two subfamilies, the Chalicotheriinae and Schizotheriinae, both of which survived into the Pleistocene.

Chalicotherium, genus of extinct perissodactyls, the order including the horse and rhinoceros. Fossil remains of the genus are common in deposits of Asia, Europe, and Africa from the Miocene Epoch (23 to 5.3 million years ago).

2023年5月3日 · Chalicotheres are a peculiar group of large herbivorous mammals, closely related to extant tapirs, rhinoceroses, and horses, but with large claws instead of hooves. The family Chalicotheriidae consists of two subfamilies, the Schizotheriinae and the Chalicotheriinae.

2018年1月23日 · This paper will examine some of the attempts to reconstruct and define the Chalicotheres across a long timescale, using this to show how multiple comparisons and analogies could be deployed in a reconstructive and evolutionary science like palaeontology, and illustrate some of the limits and tensions in comparative methods, as they were used...