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Fossil Sponges
Rocks and Geology Around Las Vegas
Fossil Sponges

Fossil Sponges.

Sponges are multicellular, aquatic animals in the phylum Porifera. Their general body plan is a tube, open at one end and closed at the other. The external wall has pores through which water is drawn into the body, then interior channels that circulate the water through their internal structures. Sponges filter food and absorb oxygen from the water, then expel the water and waste through the large opening at the end of the body.

Sponges apparently were quite common in the ancient seas that once covered the Las Vegas area. These creatures were somewhat spherical or elongate with multiple interior layers, but appear in many sizes and shapes.

Sponges are common in the limestone mountains around Las Vegas. A good place to see them is along the Fossil Canyon trail in Red Rock Canyon National Conservation Area.

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Note: All distances, elevations, and other facts are approximate.
copyright; Last updated 170828

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