Modern-looking tiny beetle fossils found in Cretaceous amber

2019-02-20 02:04:00 GMT2019-02-20 10:04:00(Beijing Time) 菲律宾申博在线代理开户登入

NANJING, Feb. 19 (Xinhua) -- An international team recently reported two new species of the extant family Clambidae of polyphagan beetles from mid-Cretaceous Burmese amber, offering important evolutionary and biogeographic implications.

Led by Cai Chenyang, a researcher with the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences (CAS), the team discovered five well-preserved fossils representing the two new species, Acalyptomerus thayerae and Sphaerothorax uenoi.

Both species are extremely close to their living counterparts in morphological terms and belong to extant genera of Clambidae.

Acalyptomerus thayerae (about 1.05-1.15 mm long) has a close affinity to A. herbertfranzi, a species found in Central America and northern South America, while Sphaerothorax uenoi (0.71 mm long) is closely related to the extant species of Sphaerothorax which are usually collected in forests of Nothofagus in Australia, Chile, and New Zealand.

Beetles are the most species-rich group of animals on our planet, exhibiting extraordinary morphological disparity and ecological diversity.

"The long-time moist environment of ancient forests may be a probable cause of the stagnation during evolutionary history," Cai said.

The research findings were published on the scientific journal Proceedings of the Royal Society B in January.

 

| PRINT | RSS
网站地图 盛618登入 申博登录网址 百家乐 幸运大转盘
申博管理登入 申博太阳城娱乐城官网登入 太阳城 申博代理加盟登入
申博娱乐 申博官网 澳门百家乐 申博现金百家乐
太阳城亚洲开户 百家乐真人游戏 申博代理 申博游戏注册
ag真人百家乐 澳门金沙娱乐场 申博 777老虎机游戏