- 11 species in North America
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Pulmonata |
| Family: | Ancylidae |
Identification Tips:
• Shell shaped like a long flattened cone
Life History:
• Typically found clinging to rocks or other hard surfaces in flowing water
• Feed by scraping algae and periphyton
• No lungs or gills; absorbs oxygen through the skin and from a projection on the foot
| POLLUTION TOLERANCE | ||||
| Very Sensitive | Somewhat Sensitive | Facultative | Somewhat Tolerant | Very Tolerant |
| Most | ||||
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Primary Information Source:
Voshell, J. Reese. 2002. A Guide to Common Freshwater Invertebrates of North America. McDonald and Woodward Publishing Company. Blacksburg, Virginia.