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Author Question: The Morrison Formation is exposed in the western United States and represents a nonmarine deposit ... (Read 34 times)

imanialler

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on: Feb 28, 2020
The Morrison Formation is exposed in the western United States and represents a nonmarine deposit with abundant dinosaur fossils. Much of the Morrison is pure mudstone, yet it is common to find highly polished pebbles and cobbles in the mud. Which of the following do you think is the best explanation of these cobbles?
◦ They are impossible; people must have put them there.
◦ They represent meteorites that killed the dinosaurs.
◦ They are gastroliths, a trace fossil.
◦ They were placed in the mud by space aliens.
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Marked as best answer by imanialler on Feb 28, 2020

smrtceo

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Reply #1 on: Feb 28, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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imanialler

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Reply 2 on: Feb 28, 2020
Excellent

juliaf

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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