8月16日消息，日本筑波大学的古生物学家团队在北大西洋下更新世沉积物中发现了一种已灭绝的类似海象的哺乳动物新物种，属于Ontocetus属。该物种 ...

综述：海象（Odobenus rosmarus）牙列与象牙提取技术 《Veterinary Clinics of North America: Exotic Animal Practice》：Walrus ( Odobenus rosmarus) Dentition and Tusk Extraction Techniques 【字体： 大 中 小 】 时间：2025年06月29日 ...

该物种被命名为“Ontocetus posti”，其在食物摄取方式上与现代海象（Odobenus rosmarus）呈现出令人瞩目的相似之处，这一发现为趋同进化提供了一个 ...

Object Details Collector Fisher, (Dr.) Ocean/Sea/Gulf North Pacific Ocean Record Last Modified 8 Jun 2020 Specimen Count 1 Other Numbers Mammals Field Number : 216 USNM Number 8418 Preparation Fluid ...

This species, named Ontocetus posti, displays surprising similarities in feeding adaptations to the modern walrus (Odobenus rosmarus), highlighting an intriguing case of convergent evolution.

This species, named Ontocetus posti, displays surprising similarities in feeding adaptations to the modern walrus (Odobenus rosmarus), highlighting an intriguing case of convergent evolution.

Object Details Record Last Modified 3 Apr 2020 Specimen Count 1 Accession Number 150955 Other Numbers Mammals Field Number : No Number USNM Number 268350 Preparation Skull Sex Unknown Place Locality ...

Walruses (Odobenus rosmarus) are distinct for their massive, long tusks and fuzzy mustache-like faces, but a recently discovered extinct species looks slightly different from the creature that ...

He has fond recollections of interacting with the Atlantic (Odobenus rosmarus rosmarus) and Pacific (Odobenus rosmarus divergens) walruses that inhabit the area.