Posted: Mar 02, 2010 3:16 pm
Hi Therapod,
I think the inside "meat" layer that holds the teeth is igneous.
No great rush here either.
I read this interesting tidbit at the Maine geological survey.
"Unfortunately there is a significant gap in Maine's fossil record from approximately 360 million years ago to about 1 million years ago. This gap is most likely the result of episodes of mountain-building and erosion which removed the record of rocks formed during this time period. Most recently, continental glaciers scoured the landscape, removing more sediment and rock. While this erosion was helpful in exposing the older, Paleozoic rocks, it completely removed all of the Mesozoic material and a large portion of the Cenozoic record."
http://www.maine.gov/doc/nrimc/mgs/explore/fossils/fossil.htm
Apparently there are 2 places to view fossils in my region. They are 65-80 miles away. Luckily I visit those towns often so it won't be a big deal to take them along next time I go.
I live 15-20 miles from this spot!http://www.maine.gov/doc/nrimc/mgs/explore/fossils/stfossil.htm
That'll be fun to look at.
Finally, (for the second rock), I found this picture of "Brachiopods" that looks like the one flat shell I described earlier.http://www.maine.gov/doc/nrimc/mgs/explore/fossils/bedrock/brach.htm
The "round bristly animals" in my 2nd rock have actual bristles instead of grooves in a shell. Now I realize from the other picture, that "may" be due to being an imprint. I've learned a bit already
I think the inside "meat" layer that holds the teeth is igneous.
No great rush here either.
I read this interesting tidbit at the Maine geological survey.
"Unfortunately there is a significant gap in Maine's fossil record from approximately 360 million years ago to about 1 million years ago. This gap is most likely the result of episodes of mountain-building and erosion which removed the record of rocks formed during this time period. Most recently, continental glaciers scoured the landscape, removing more sediment and rock. While this erosion was helpful in exposing the older, Paleozoic rocks, it completely removed all of the Mesozoic material and a large portion of the Cenozoic record."
http://www.maine.gov/doc/nrimc/mgs/explore/fossils/fossil.htm
Apparently there are 2 places to view fossils in my region. They are 65-80 miles away. Luckily I visit those towns often so it won't be a big deal to take them along next time I go.
I live 15-20 miles from this spot!http://www.maine.gov/doc/nrimc/mgs/explore/fossils/stfossil.htm
That'll be fun to look at.
Finally, (for the second rock), I found this picture of "Brachiopods" that looks like the one flat shell I described earlier.http://www.maine.gov/doc/nrimc/mgs/explore/fossils/bedrock/brach.htm
The "round bristly animals" in my 2nd rock have actual bristles instead of grooves in a shell. Now I realize from the other picture, that "may" be due to being an imprint. I've learned a bit already