Something Uncommon

[isurus90064]

Hey Siteseer :-) its always been my understanding based on a discussion I had with one of the dealers/geologist in Tucson that the Ridgeville Pit has exposures of both Pliocene and Oligocene age. I also have one or two C. carcharias from there and several early makos.

I thought all the teeth from Austin Pit were Pliocene. I have a definite Carcharodon carcharias from there - also a Parotodus like yours.

Edited August 27, 2015 by isurus90064

[PaleoRon]

The Ridgeville site actually had at least two pits. The best one was a lake when I collected there. I found Pliocene/Pleistocene, Oligocene, and Eocene material (a reworked Auriculatis). My best find was a near perfect Oligocene Squalodon molar. When the first pit was active two local collectors I know found some amazing Great White teeth and also a massive walrus tusk. Some of their other finds included Paratodus, Notorhynchus, Carcharhinus, Isurus, and Galeocerdo teeth. Many of them were pristine with a wide variety of colors.

[fossilselachian]

The Ridgeville site actually had at least two pits. The best one was a lake when I collected there. I found Pliocene/Pleistocene, Oligocene, and Eocene material (a reworked Auriculatis). My best find was a near perfect Oligocene Squalodon molar. When the first pit was active two local collectors I know found some amazing Great White teeth and also a massive walrus tusk. Some of their other finds included Paratodus, Notorhynchus, Carcharhinus, Isurus, and Galeocerdo teeth. Many of them were pristine with a wide variety of colors.

Ron:

Yes, I saw that walrus tusk - quite a find! Also, one of the finest Parotodus teeth I've ever seen came from this site. Fortunately, I've held on to several of those colorful Great White teeth found in Ridgeville. In fact, I posted some of these photos in the distant past. To me one of the most interesting facts at the two pits were the incredible number of Notorhynchus teeth found. For a small site(s) there was a inordinate number of cow shark teeth found. I saw a collection of 50 cow shark teeth amassed by one one of the two collectors to which you are most likely making reference.

FS

[fossilselachian]

Although not as large, here are two additional Parotodus teeth from STH

[isurus90064]

Love the shapes on those! Nice!

[Boesse]

Update about the Austin Sand pit in Ridgeville: it's actually early Pleistocene owing to the presence of giant beaver (Castoroides) and Hemipristis serra. For more, read:

https://www.app.pan.pl/article/item/app004542018.html

[Untitled]

Figured I’d revive this old thread:  here’s an undescribed Cardabiodontid posterior tooth from Toolebuc Formation of Australia. 

[paulyb135]

Here is an Oplosaurus tooth from the Isle of Wight 

 

the only one ive seen in a personal collection