Planorbarius
![](/Images/godic/202502/03/Posthornschnecke14415.jpg")
![Planorbarius corneus. View of the sunken spire (held facing downwards in life)](/Images/godic/202502/03/Planorbarius_corneus_top4415.jpg")
![Planorbarius corneus. View of umbilicus (held uppermost in life)](/Images/godic/202502/03/Planorbarius_corneus_bottom4416.jpg")
Planorbarius is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells.
Planorbarius
英语百科
- economic liberty
- economic life
- economic life cycle
- economic life cycle forecast method
- economic life in modern times
- economic lifeline
- economic lifeline of the country
- economic life lines
- economic life of a project
- economic life of equipment
- economic life time
- Economic Life Valuation
- Economic Life Valuations
- economic limit
- economic limitations
- economic limit rate
- economic links
- economic litigation
- economic load
- economic load dispatch
- economic load dispatching
- economic load distribution
- economic location
- economic logic
- economic long cycle theory