Campeloma nebrascensis (fossil snail) (Fort Union Formation, Paleocene; Olive, Powder River County, Montana, USA) 4 : 無料・フリー素材/写真
Campeloma nebrascensis (fossil snail) (Fort Union Formation, Paleocene; Olive, Powder River County, Montana, USA) 4 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Campeloma nebrascensis (Meek & Hayden, 1856) - fossil snail shell from the Paleocene of Montana, USA. (abapertural view) (~2.7 centimeters tall)The gastropods (snails & slugs) are a group of molluscs that occupy marine, freshwater, and terrestrial environments. Most gastropods have a calcareous external shell (the snails). Some lack a shell completely, or have reduced internal shells (the slugs & sea slugs & pteropods). Most members of the Gastropoda are marine. Most marine snails are herbivores (algae grazers) or predators/carnivores.Seen here is a freshwater fossil snail. The genus Campeloma is still alive today in North America.Classification: Animalia, Mollusca, Gastropoda, ViviparidaeStratigraphy: Fort Union Formation, PaleoceneLocality: unrecorded/undisclosed site at or near the town of Olive, north-central Powder River County, southeastern Montana, USA-------------------------See info. at:en.wikipedia.org/wiki/Campelomaanden.wikipedia.org/wiki/Viviparidae |
| 撮影日 | 2019-11-15 13:51:45 |
| 撮影者 | James St. John |
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