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Below are some more of my macro fossils that I’ve recently put in 8”X12” Riker mount displays. To see a previous post with Riker mount displays with specimens from the Aquia Formation of Maryland and the Nanjemoy Formation of Virginia check out the below link: http://www.thefossilforum.com/index.php?/topic/101415-a-few-riker-mounts-with-specimens-from-the-aquia-formation-of-maryland-and-the-nanjemoy-formation-of-virginia/ Considering I’ve only made three trips to the Ernst Ranch in Bakersfield California, I’m pretty happy with the macro specimens that I’ve found in those trips. The below display contains some of my nicer macro specimens from the Miocene Round Mountain Silt Formation. The top of the display has a cetacean flipper bone, cetacean vertebra, a bird bone, and a leatherback turtle carapace bone. Then there is a row of Isurus planus shark teeth. Then a group of Carcharodon hastalis teeth (for size reference the largest tooth is 3.13”) with an Otodus megalodon to the right. The bottom of the display has two upper Hexanchus teeth and both cetacean and sea lion/seal teeth. Below is a picture of a display with macro specimens from my sons’ M&M Ranch in Sioux County Nebraska. These macro specimens came from the Eocene Chadron Formation (maybe but not likely) and the Oligocene Brule Formation (Most likely as the vast amount of the ranch flats areas where they were collected is almost all Oligocene). The top has a row of coprolites. I only have a few coprolites left as I have donated several hundred to the New Mexico Museum of Natural History and Science. The next row has a few pieces of turtle/tortoise shell. Then there is a mammal tooth and rows of small mammal partial jaws. The bottom of the display contains mammal bones. Some of these specimens were given to me by my older son, Marco Jr., because I don’t do a lot of surface collecting at the ranch. I spend the vast majority of my time at the ranch searching for anthills and collecting anthill matrix which contains micro vertebrate specimens which are my main interest. Below is a picture of a display with Carcharodon hastalis shark teeth from the Miocene of Virginia. The top of the display contains teeth from the upper jaw and the bottom of the display from the lower jaw. For size reference the largest teeth are 2 5/8”. I have collected several thousand Carcharodon hastalis teeth from Virginia but this will probably be my only Riker mount display of them. I used all six of the Riker mount displays that I just recently bought so I won’t be able to post anything more until I get my next batch of them delivered. Marco Sr.