Question of the Week Answer
If you answered c, about 400 million years ago - you are correct!
Fairy shrimp are considered among the most primitive of living crustaceans. Fossil remains which look quite similar to modern day fairy shrimp have been discovered in marine sediments that date to the Devonian Period about 400 million years ago. These small crustaceans are related to crabs, lobsters and krill. California hosts 25 species of fairy shrimp. Most are found only in vernal pools - small ephemeral wetlands that fill seasonally with rainwater but are dry most of the year. Pools that support fairy shrimp are devoid of fish, for fish would quickly gobble them up.
BLM California's Redding Field Office manages the Sacramento River Bend Wetland Complex to conserve rare vernal pool habitat and provide recreational opportunities such as hiking, fishing, camping, and hunting. For information on the conservation of vernal pools, visit BLM California's Web.
Vernal pool photo: BLM
Source: University of California, Merced
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