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Some fossils [1]
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Date: 2022-12-10
The Mineral Museum on the campus of Montana Tech in Butte has a number of fossils on display, including the collection of Larry Eichhorn.
Shown above is silicified wood which develops when water carrying dissolved silica replaces and preserves the original fibers of wood.
Shown above is an Edmontosaurus sacrum.
The Western Interior Seaway, also known as the Cretaceous Seaway, the Niobraran Sea, and the North American Inland Sea, split the continent of North American into two halves during most of the early and mid-Cretaceous Period.
This seaway was created through the collision of the Pacific and North American tectonic plates. According to the display:
“It was a shallow sea with diverse marine life including predatory marine reptiles, such as mosasaurs growing up to 18 meters long, ichthyosaurs, and plesiosaurs. There were abundant sharks and advanced bony fish. Other sea life included invertebrates such as mollusks, ammonites, squid-like belemnites, and plankton. The sea was probably less than 600 feet deep in most areas, and had a relatively flat and soft, oxygen-depleted mud bottom fostering fossilization.”
Shown above is a clam.
Open Thread
This is an open thread. You don’t have to restrict your comments to fossils or paleontology but feel free to comment on what’s happening in today’s world.
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