Manitobia fossil algae in Silurian argillaceous dolostone (Ontario, Canada) : 無料・フリー素材/写真
Manitobia fossil algae in Silurian argillaceous dolostone (Ontario, Canada) / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Manitobia sp. preserved as a carbonized compression in Silurian argillaceous dolostone from Ontario, Canada (FMNH PP46685, Field Museum of Natural History, Chicago, Illinois, USA).This fossil alga has been previously assigned to Buthotrephis, a nominal genus that is a junior synonym of the branching trace fossil Chondrites. Fossil algae previously identified as "Buthotrephis" have been reassigned to Manitobia, a possible fossil red alga (see Fry, 1983, An algal flora from the Upper Ordovician of the Lake Winnipeg region, Manitoba, Canada. Review of Palaeobotany and Palynology 39: 313-341).-----------Carbonization refers to fossils being preserved as dark-colored, flattened, carbon-rich films. Many fossil leaves in the rock record have been carbonized. But, any fossil that's been preserved as a dark, flattened film can be called carbonized. |
| 撮影日 | 2010-06-11 11:21:08 |
| 撮影者 | James St. John |
| タグ | |
| 撮影地 |