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MarcoSr

A few Riker mounts with specimens from the Aquia Formation of Maryland and the Nanjemoy Formation of Virginia

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FossilDAWG

:wub: :wub: :wub:

Don

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Tidgy's Dad

Stunning collection.:)

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sharkdoctor

Great thread and displays. I can't wait to see the dentitions:popcorn::popcorn:

 

Totally agree about the Otodus eating a lot of turtles. Even collecting in situ, the vast majority of teeth seem to have tip and/or blade damage. 

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MarcoSr
2 hours ago, FossilDAWG said:

:wub: :wub: :wub:

Don

 

Don

 

Thank you.  I spend the vast majority of my time collecting and searching matrix for micro vertebrate specimens.  However, every now and then, I burn out with the micros and put some time into my macro collection.

 

Marco Sr.

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MarcoSr
42 minutes ago, sharkdoctor said:

Great thread and displays. I can't wait to see the dentitions:popcorn::popcorn:

 

Totally agree about the Otodus eating a lot of turtles. Even collecting in situ, the vast majority of teeth seem to have tip and/or blade damage. 

 

The Nanjemoy Formation specimens were all collected in situ.  Most of the Aquia Formation specimens were collected in float.

 

I've wanted to put together the shark dentitions for awhile.   However, I always seem to get sidetracked with another micro vertebrate project.

 

Marco Sr.

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FossilsAnonymous

Those otodus are spectacular! I’ll find one one day!

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MarcoSr
31 minutes ago, FossilsAnonymous said:

Those otodus are spectacular! I’ll find one one day!

 

Have good luck finding your Otodus tooth.  When I first started collecting the Liverpool Point area along the Potomac River in the 1970s I would find 7 or more Otodus teeth every trip.  I never ran into other collectors back then except the ones that were collecting with me.  However because the area hadn't been collected much, the vast majority of the Otodus teeth were very water worn because they had been in the Potomac River for many years.  As more and more collectors went to the area as the years passed, the Otodus teeth that had been in the river for years got collected and the number that I found each trip dropped dramatically.  However, the condition of the teeth got better because most of what I was finding recently sloughed from the cliffs. So hopefully when you do find your first Otodus tooth, it will be fresh from the cliffs.  However, even these fresh Otodus teeth tend to have lots of feeding damage.  The best time to find teeth fresh from the cliffs is after the freeze/thaw cycles in late Winter/early Spring especially after a very cold winter.

 

Marco Sr.

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Jeffrey P

Congratulations on those, especially the ray dental plates which I'm still hoping to find someday. I'm sure it took a lot of time and effort to build up a collection like that. 

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MarcoSr
10 hours ago, Jeffrey P said:

Congratulations on those, especially the ray dental plates which I'm still hoping to find someday. I'm sure it took a lot of time and effort to build up a collection like that. 

 

I started fossil collecting in 1974.  I typically made 100 fossil trips a year except for about a 10 year period when I was coaching different youth sports teams for my sons.

 

I have lots of ray dental plates from the Aquia Formation of Maryland.  Below is a new picture of my Aquia Formation, macro fossil drawer which shows the two new Riker mounts from this post and the other macro specimens not in Riker mounts.

 

 

5e19c25356317_PaleoceneAquiaFormationPotomacRiverLiverpoolPointMarylandspecimensnewdrawer.thumb.JPG.a7b5654055136e292931427f37fe2fbb.JPG

 

 

 

Marco Sr.

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deutscheben

Wow, what an awe-inspiring collection! :popcorn:

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MarcoSr
7 hours ago, deutscheben said:

Wow, what an awe-inspiring collection! :popcorn:

 

Thank you, the result of a lot of years and fossil trips.

 

Marco Sr.

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Allosaurus

Wow I'm in awe. That is a beautiful collection. 

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WhodamanHD

Awesome stuff as always! Thanks for sharing. 

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MarcoSr
18 hours ago, Allosaurus said:

Wow I'm in awe. That is a beautiful collection. 

 

18 hours ago, WhodamanHD said:

Awesome stuff as always! Thanks for sharing. 

 

Thank you.  I've started pulling some of my Miocene macro specimens from Virginia (see the below picture) from my map chest drawers that I'll put in Riker mount displays hopefully Friday right after I should receive the displays.

 

 

5e1cd9842cdb4_MioceneStratfordHallStratfordHarbourWestmorelandCountyVirginiaspecimens.thumb.jpg.ad9bd981b999bf2e152e96671a9501d6.jpg

 

 

Marco Sr.

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siteseer

Marco Sr.,

 

Wow, that's a lot of great material.  I have an idea how rare the larger Aquia croc teeth are.  Great stuff.  I also know how rare the Nanjemoy Otodus are especially anything large.  I managed to deal for just one in the late 90's.

 

Of course, any ray tooth plates with lateral teeth are rare.  You have some great specimens.  They must be the oldest ones I've seen like that.

 

Jess

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MarcoSr
16 hours ago, siteseer said:

Marco Sr.,

 

Wow, that's a lot of great material.  I have an idea how rare the larger Aquia croc teeth are.  Great stuff.  I also know how rare the Nanjemoy Otodus are especially anything large.  I managed to deal for just one in the late 90's.

 

Of course, any ray tooth plates with lateral teeth are rare.  You have some great specimens.  They must be the oldest ones I've seen like that.

 

Jess

 

Jess

 

I started collecting the Aquia Formation in 1974 and was able to find some really nice specimens before the mass of collectors descended upon the area.

 

I only have 5 Otodus from the Nanjemoy Formation of Virginia after over twenty years of collecting.  I found two of them this year in a new collecting location.  The two folks I collect with found five.  So we are hopeful of many more Otodus from this new area than usual.  Most of the ones found were small, under two inches.

 

Marco Sr.

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