The Oldest Metazoa in the World

世界上最古老的后生动物

• 批准号: 9115583
• 负责人: Ellis Yochelson
• 金额: $ 1万
• 依托单位: Individual Award
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1993-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115583&HistoricalAwards=false
• 关键词: Oldest; Metazoa; World

Recently, impressions of what may be soft-bodied animals have been discovered in USNM collections from the Belt Supergroup in Glacier National Park. Existing material is too scanty and poorly preserved to convincingly document that the markings are of metazoan origin. Exploratory field work will be conducted in the area from which the museum collections were made, in hopes of finding more definitive specimens of these possible metazoans. If the specimens do indeed represent metazoans, the age of the oldest known animals would be extended from about 700 to 1400 million years.

最近，在冰川国家公园贝尔特超群的 USNM 收藏品中发现了可能是软体动物的痕迹。 现有材料太少且保存不良，无法令人信服地证明这些标记是后生动物起源的。 探索性的实地工作将在博物馆收藏的地区进行，希望找到这些可能的后生动物的更明确的标本。 如果这些标本确实代表后生动物，那么已知最古老动物的年龄将从大约 700 亿年延长到 14 亿年。