What's new
Forums
Members
Resources
Whopper Club
Politics
Pics
Videos
Fishing Reports
Classifieds
Log in
Register
What's new
Search
Search
Search titles only
By:
Members
Resources
Whopper Club
Politics
Menu
Log in
Register
Install the app
Install
Forums
General
General Discussion
Any rock hounds ?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Davey Crockett" data-source="post: 291934" data-attributes="member: 367"><p><a href="https://www.dmr.nd.gov/ndfossil/poster/pierre/Pierre.pdf" target="_blank">https://www.dmr.nd.gov/ndfossil/poster/pierre/Pierre.pdf</a></p><p></p><p></p><p> NORTH DAKOTA’S UNDERWATER WORLD</p><p>During the Cretaceous, from about 90 million to 65 million years</p><p>ago, North Dakota was either completely or partially covered by subtropical</p><p>to warm temperate, shallow epicontinental seas. These seas occupied what</p><p>was called the Western Interior Seaway, essentially the North American</p><p>mid-continent. The seas were never very deep, perhaps a few hundred feet</p><p>at most, and at their greatest extent they connected the Arctic Ocean with</p><p>the Gulf of Mexico. During low sea level, the Hell Creek Delta covered</p><p>western North Dakota and Fox Hills Sea shoreline habitats occurred in</p><p>central North Dakota. Fine grained sediments, mostly silt and clay,</p><p>deposited on the floor of these oceans are now rocks of the Carlile,</p><p>Niobrara, and Pierre Formations. These are the oldest rocks exposed in</p><p>North Dakota. Entombed in these rocks are fossils of the animals and</p><p>plants that inhabited the seas. Remains of marine reptiles, including the</p><p>mosasaur Plioplatecarpus, plesiosaurs, and the sea turtle, Archelon; fish</p><p>(such as sharks, rays, and ratfish); birds; and invertebrates (including clams,</p><p>cephalopods, snails, corals, and crabs) have been recovered from these</p><p>rocks.</p></blockquote><p></p>
[QUOTE="Davey Crockett, post: 291934, member: 367"] [URL="https://www.dmr.nd.gov/ndfossil/poster/pierre/Pierre.pdf"]https://www.dmr.nd.gov/ndfossil/poster/pierre/Pierre.pdf[/URL] NORTH DAKOTA’S UNDERWATER WORLD During the Cretaceous, from about 90 million to 65 million years ago, North Dakota was either completely or partially covered by subtropical to warm temperate, shallow epicontinental seas. These seas occupied what was called the Western Interior Seaway, essentially the North American mid-continent. The seas were never very deep, perhaps a few hundred feet at most, and at their greatest extent they connected the Arctic Ocean with the Gulf of Mexico. During low sea level, the Hell Creek Delta covered western North Dakota and Fox Hills Sea shoreline habitats occurred in central North Dakota. Fine grained sediments, mostly silt and clay, deposited on the floor of these oceans are now rocks of the Carlile, Niobrara, and Pierre Formations. These are the oldest rocks exposed in North Dakota. Entombed in these rocks are fossils of the animals and plants that inhabited the seas. Remains of marine reptiles, including the mosasaur Plioplatecarpus, plesiosaurs, and the sea turtle, Archelon; fish (such as sharks, rays, and ratfish); birds; and invertebrates (including clams, cephalopods, snails, corals, and crabs) have been recovered from these rocks. [/QUOTE]
Verification
What is the most common fish caught on this site?
Post reply
Recent Posts
Riddle Me This.....
Latest: guywhofishes
19 minutes ago
R
Quiet Pellet Gun
Latest: Retired-Guy
23 minutes ago
Israel
Latest: wslayer
Today at 12:06 PM
Bismarck roads and driving
Latest: Trip McNeely
Today at 10:25 AM
More CWD NE ND
Latest: Average_NDA_Member
Today at 9:59 AM
NFL News (Vikings)
Latest: Obi-Wan
Today at 9:08 AM
Drotto adjustment?
Latest: shorthairsrus
Today at 8:22 AM
I Love This Bar (NDA)
Latest: svnmag
Yesterday at 8:58 PM
Answer me this
Latest: svnmag
Yesterday at 8:49 PM
Coffee and sweet beaver
Latest: Maddog
Yesterday at 10:59 AM
Presidents who added the most
Latest: grumster
Yesterday at 12:01 AM
Check your bags boys
Latest: svnmag
Friday at 8:27 PM
Tractors
Latest: Davey Crockett
Friday at 11:15 AM
8
Spring snows 24
Latest: 870XPRS
Thursday at 10:14 PM
R
Tract Optics
Latest: rodcontrol
Thursday at 2:22 PM
Any Birders here?
Latest: svnmag
Wednesday at 8:59 PM
Prairie ghost
Latest: johnr
Wednesday at 4:20 PM
S
Mega Live
Latest: SLE
Wednesday at 2:12 PM
G
A good movie
Latest: gillraker
Wednesday at 9:53 AM
Skinwalker Ranch
Latest: svnmag
Tuesday at 10:16 PM
Friends of NDA
Forums
General
General Discussion
Any rock hounds ?
Top
Bottom