Extraordinary Common Teeth

[isurus90064]

I'll post a few more Parotodus teeth from STH. As mentioned before, these are not exactly 'common', in fact I would call STH Parotodus teeth rare, but rather than maintaining several threads, it's easier to just focus on one and consolidate, as well as post new material with anything worth seeing.

Adding to the wonderful collection of Parotodus teeth posted on this thread by Troodon (pages 36, 37, and 38).

I also have a number of Parotodus teeth posted on pages 27, 28, and 38.

 

~2.41" - 6.12cm

 

Parotodus benedini

"Sharktooth Hill"

~15.5 Ma

Middle Miocene

Roundmountain Silt

Bakersfield

Kern County, CA

 

Roundmountain Silt ages:

~15.5-16.3 Ma - Roundmountain Silt strontium-isotope ages (Olson, 1988)

~14.0-15.5 Ma - Roundmountain Silt Luisian benthic foraminiferal fauna (Barron and Isaacs, 2001; Prothero, 2001)

~15.0-16.0 Ma - Roundmountain Silt Denticulopsis lauta A zone diatoms (Barron, 1981; Barron, in Bartow and McDougall, 1984)

~14.5-16.1 Ma - magnetic stratigraphy for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

~15.2-16.0 Ma - magnetic stratigraphy for the middle section of the Roundmountain Silt that includes the bonebed (Prothero, Sanchez, and Denke, 2008)

~15.5 Ma - magnetic stratigraphy for the bonebed itself (Prothero, Sanchez, and Denke, 2008)

~14.5-16.1 Ma - best correlation for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

 

[ynot]

Thanks guys, as you guys have done before, just doing my part to keep this thread interesting.

And a very good job of it!!!

Tony

[isurus90064]

~2.38" - 6.05cm

 

Parotodus benedini

"Sharktooth Hill"

~15.5 Ma

Middle Miocene

Roundmountain Silt

Bakersfield

Kern County, CA

 

Roundmountain Silt ages:

~15.5-16.3 Ma - Roundmountain Silt strontium-isotope ages (Olson, 1988)

~14.0-15.5 Ma - Roundmountain Silt Luisian benthic foraminiferal fauna (Barron and Isaacs, 2001; Prothero, 2001)

~15.0-16.0 Ma - Roundmountain Silt Denticulopsis lauta A zone diatoms (Barron, 1981; Barron, in Bartow and McDougall, 1984)

~14.5-16.1 Ma - magnetic stratigraphy for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

~15.2-16.0 Ma - magnetic stratigraphy for the middle section of the Roundmountain Silt that includes the bonebed (Prothero, Sanchez, and Denke, 2008)

~15.5 Ma - magnetic stratigraphy for the bonebed itself (Prothero, Sanchez, and Denke, 2008)

~14.5-16.1 Ma - best correlation for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

 

[isurus90064]

Thanks Tony.

Some of my more colorful C. hastalis.

 

C. hastalis

"Sharktooth Hill"

~15.5 Ma

Middle Miocene

Roundmountain Silt

Bakersfield

Kern County, CA

 

Roundmountain Silt ages:

~15.5-16.3 Ma - Roundmountain Silt strontium-isotope ages (Olson, 1988)

~14.0-15.5 Ma - Roundmountain Silt Luisian benthic foraminiferal fauna (Barron and Isaacs, 2001; Prothero, 2001)

~15.0-16.0 Ma - Roundmountain Silt Denticulopsis lauta A zone diatoms (Barron, 1981; Barron, in Bartow and McDougall, 1984)

~14.5-16.1 Ma - magnetic stratigraphy for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

~15.2-16.0 Ma - magnetic stratigraphy for the middle section of the Roundmountain Silt that includes the bonebed (Prothero, Sanchez, and Denke, 2008)

~15.5 Ma - magnetic stratigraphy for the bonebed itself (Prothero, Sanchez, and Denke, 2008)

~14.5-16.1 Ma - best correlation for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

 

[isurus90064]

The next two have disproportionately long mesial root lobes.

 

C. hastalis

"Sharktooth Hill"

~15.5 Ma

Middle Miocene

Roundmountain Silt

Bakersfield

Kern County, CA

 

Roundmountain Silt ages:

~15.5-16.3 Ma - Roundmountain Silt strontium-isotope ages (Olson, 1988)

~14.0-15.5 Ma - Roundmountain Silt Luisian benthic foraminiferal fauna (Barron and Isaacs, 2001; Prothero, 2001)

~15.0-16.0 Ma - Roundmountain Silt Denticulopsis lauta A zone diatoms (Barron, 1981; Barron, in Bartow and McDougall, 1984)

~14.5-16.1 Ma - magnetic stratigraphy for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

~15.2-16.0 Ma - magnetic stratigraphy for the middle section of the Roundmountain Silt that includes the bonebed (Prothero, Sanchez, and Denke, 2008)

~15.5 Ma - magnetic stratigraphy for the bonebed itself (Prothero, Sanchez, and Denke, 2008)

~14.5-16.1 Ma - best correlation for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

 

[isurus90064]

Parotodus benedini

 

~2.34" - 5.94cm

 

"Sharktooth Hill"

~15.5 Ma

Middle Miocene

Roundmountain Silt

Bakersfield

Kern County, CA

 

Roundmountain Silt ages:

~15.5-16.3 Ma - Roundmountain Silt strontium-isotope ages (Olson, 1988)

~14.0-15.5 Ma - Roundmountain Silt Luisian benthic foraminiferal fauna (Barron and Isaacs, 2001; Prothero, 2001)

~15.0-16.0 Ma - Roundmountain Silt Denticulopsis lauta A zone diatoms (Barron, 1981; Barron, in Bartow and McDougall, 1984)

~14.5-16.1 Ma - magnetic stratigraphy for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

~15.2-16.0 Ma - magnetic stratigraphy for the middle section of the Roundmountain Silt that includes the bonebed (Prothero, Sanchez, and Denke, 2008)

~15.5 Ma - magnetic stratigraphy for the bonebed itself (Prothero, Sanchez, and Denke, 2008)

~14.5-16.1 Ma - best correlation for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

 

[isurus90064]

Just updated the pics for a C. megalodon on page 4, post #80. The lighting was pretty bad on the previous pics.

http://www.thefossilforum.com/index.php?/topic/2380-extraordinary-common-teeth/page-4

Edited September 26, 2015 by isurus90064

[isurus90064]

Even though this looks like a half a meg, almost all of the enamel is there and only a small portion of the root is missing.

 

Pathologic O. megalodon

 

~4.42" - 11.23cm

 

"Sharktooth Hill"

~15.5 Ma

Middle Miocene

Roundmountain Silt

Bakersfield

Kern County, CA

 

Roundmountain Silt ages:

~15.5-16.3 Ma - Roundmountain Silt strontium-isotope ages (Olson, 1988)

~14.0-15.5 Ma - Roundmountain Silt Luisian benthic foraminiferal fauna (Barron and Isaacs, 2001; Prothero, 2001)

~15.0-16.0 Ma - Roundmountain Silt Denticulopsis lauta A zone diatoms (Barron, 1981; Barron, in Bartow and McDougall, 1984)

~14.5-16.1 Ma - magnetic stratigraphy for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

~15.2-16.0 Ma - magnetic stratigraphy for the middle section of the Roundmountain Silt that includes the bonebed (Prothero, Sanchez, and Denke, 2008)

~15.5 Ma - magnetic stratigraphy for the bonebed itself (Prothero, Sanchez, and Denke, 2008)

~14.5-16.1 Ma - best correlation for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

 

 

[isurus90064]

Some portions of the boned produce teeth that show some level of manganese development. This example has quite a bit in that 90% the entire root on the lingual side is covered with it.

 

O. megalodon

 

~4.65" - 11.81cm

 

"Sharktooth Hill"

~15.5 Ma

Middle Miocene

Roundmountain Silt

Bakersfield

Kern County, CA

 

Roundmountain Silt ages:

~15.5-16.3 Ma - Roundmountain Silt strontium-isotope ages (Olson, 1988)

~14.0-15.5 Ma - Roundmountain Silt Luisian benthic foraminiferal fauna (Barron and Isaacs, 2001; Prothero, 2001)

~15.0-16.0 Ma - Roundmountain Silt Denticulopsis lauta A zone diatoms (Barron, 1981; Barron, in Bartow and McDougall, 1984)

~14.5-16.1 Ma - magnetic stratigraphy for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

~15.2-16.0 Ma - magnetic stratigraphy for the middle section of the Roundmountain Silt that includes the bonebed (Prothero, Sanchez, and Denke, 2008)

~15.5 Ma - magnetic stratigraphy for the bonebed itself (Prothero, Sanchez, and Denke, 2008)

~14.5-16.1 Ma - best correlation for the Roundmountain Silt (Prothero, Sanchez, and Denke, 2008)

 

 

[PFOOLEY]

It, really, is not every day anyone is fortunate enough to see a quality collection of this magnitude...

...Marcel, be very proud...fantastic collection of teeth.

[isurus90064]

Hey Mike,

 

Thank you for the kind words, but there are many people on this forum with phenomenal collections.

I've been hunting for a Carcharocles from the following location for quite some time. I finally got one and thought I should show it here. It's not in great condition but rare for California.

 

The distance through the air from Sharktooth Hill to Pyramid Hill is 5.75 miles. Here's a map of the Pyramid Hill location in relation to Sharktooth Hill.

 

 

 

Columnar section of the Pyramid Hill Sand Member of the Jewett Sand at Pyramid Hill proper drawn after:

Lawrence G. Barnes. 1979. Fossil enaliarctine pinnipeds (mammalia: Otariidae) from Pyramid Hill, Kern county, California. Contributions in Science 318: 7.

 

 

O. angustidens

 

~2.19" - 5.56cm

 

"Pyramid Hill Local Fauna"

~25 - 23Mya

"Basal Grit Zone"

Latest Oligocene

Jewett Sand

Pyramid Hill Sand Member (lowest part of the Jewett Sand)

Pyramid Hill

Kern County, CA

 

For those of you not familiar with Pyramid Hill, it is only a few miles to the NNE from Sharktooth Hill.

 

[ynot]

Hey Mike,

Thank you for the kind words, but there are many people on this forum with phenomenal collections.

I've been hunting for a Carcharocles from the following location for quite some time. I finally got one and thought I should show it here. It's not in great condition but rare for California.

~2.19"

C. angustidens

~25-21Mya

Jewett Sand

Pyramid Hill

Kern County, CA

For those of you not familiar with Pyramid Hill, it is only a few miles to the NNE from Sharktooth Hill.

Ditto on everything PFOOLEY said-- Congratulations on the acquisition, nice tooth! (As are all the others shown here.)

A question about the Pyramid Hill formation- Do You know of any shell beds in it? Or in that general area?

Tony

Edited September 26, 2015 by ynot

[isurus90064]

I do not know of any shell beds in the Pyramid Hill vicinity (either the Jewett Sand or the Pyramid hill Sand member). The immediate locality has been off limits since the seventies (most of it is private property). There are locations around the Sharktooth Hill area such as "Pecten Point" (Lower Roundmountain Silt) that do contain shell beds. Pecten Point is a location North of Sharktooth Hill and Northwest of Pyramid Hill. There is also a location known as "Barker Ranch" that provides access to shell beds. Not sure if this is this locality is freely accessible anymore.

[ynot]

Thanks.

In the mid/late 80's I found a shell layer that was 10-15 feet thick and was wondering what part of the sequence it was in. The problem being that all I know about the location was I was on a ridge NE of bakersfield and the shell bed was exposed in a ravine below the road. Not much to go on.

Thanks again for the information!

Tony

[isurus90064]

One of the more colorful teeth from this location. Un like the rest of the San Diego teeth posted so far, this tooth is from Reynard Way:

 

C. carcharias

 

~2.23" - 5.66cm

 

"Reynard Way"

~3-1.5Mya

Pliocene to Early Pleistocene

San Diego Formation

San Diego County, CA

 

 

[siteseer]

Isurus90064,

I haven't seen that color pattern/combination before. Funky. You don't see a lot of brown teeth. That looks like it was brown and then got bleached around the edges and later stained by manganese.

When I started collecting the STH Bonebed, I wasn't really that interested in the range of color, but over time, I noticed that some colors and color combinations can be get weird there. For years, a lot of people have really liked the orange-red ones even though the ones that are mostly blue are rare too.

Jess

Back from another work trip. Btw work really interferes with fossil fun.

Also, here are some new STH teeth. I'll photograph more this week.

I'll edit this post later to include more accurate locality info.

C. hastalis

Roundmountain Silt

"Sharktooth Hill"

Bakersfield

Kern County, CA

[siteseer]

That's a great blue one. Rare color.

~2.94"

C. hastalis

Roundmountain Silt

"Sharktooth Hill"

Bakersfield

Kern County, CA

[siteseer]

That's a tooth that would look like half of a broken tooth with just a thin coating of matrix along the edge. It could have been tossed and kicked around until somebody noticed the odd turn towards the tip. Killer find.

Even though this looks like a half a meg, almost all of the enamel is there and only a small portion of the root is missing.

~4.42"

Pathologic C. megalodon

Roundmountain Silt

"Sharktooth Hill"

Bakersfield

Kern County, CA

[PFOOLEY]

Hey Mike,

Thank you for the kind words, but there are many people on this forum with phenomenal collections.

There are! I encourage everyone to dig into the depths of this forum...there are some mind blowing collections.

Marcel, your collection is fresh.

[kkborch]

Pair of 2"+ Lee Creek Hemispristis

2.01" and 2.04"

[kkborch]

2.06" Bone Valley, FL Hemipristis

[kkborch]

On to my small Chubutensis collection...

3.32" from Calvert Cliffs, MD

Edited September 27, 2015 by kkborch

[isurus90064]

Hey kkborch,

The LC and BV hemis are fantastic!! This size and quality are harder to come by than ever. Very very nice color on the BV and I love! the shape on the chubutensis, nice size too! Thanks for posting.

"LC hemi" ... definitely a rap name.

[isurus90064]

Photographed these last weekend. I'm currently on another work trip, so I'll add the dimensions later because I didn't have anything to measure with.

 

C. carcharias

 

~2.69" - 6.83cm

 

"Washington St."

~3-1.5Mya

Pliocene to Early Pleistocene

San Diego Formation

San Diego County, CA

 

 

[isurus90064]

C. carcharias

 

~2.41" - 6.12cm

 

"Arroyo Dr."

~3-1.5Mya

Pliocene to Early Pleistocene

San Diego Formation

San Diego County, CA