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CMM finds Physogaleus aduncus possible associated dentition
Miocene_Mason posted a topic in Fossil News
From the Calvert Marine Museum Fossil Club Facebook page, our shark people may enjoy this next twist in the debate: ”Associated shark teeth from the whale collected in 2008. During the excavation a number of teeth were uncovered around the ribs. All of these teeth are from a tiger shark. The upper and lower positions are a proposed possibility. However, those of you who follow the ever confusing world of shark tooth identification, you’ll notice the “upper” teeth are ones identified as Galeocerdo aduncus and the “lower” teeth are ones identified as Physogaleus contortus. The fact that there are near symmetrical proportions of teeth between the two tooth types/shaped lead me to consider the possibility that these are from a single individual rather than two different species or sharks.” *John Nance, CMM paleo collections manager adds: “I’ve been working on prepping the whale some more and uncovered an additional 10 teeth, culminating in this dentition. Since they weren’t articulated there was concern about making a definitive conclusion. Dr. Kent does discuss 3 morphotypes in his chapter on the tiger sharks.” -
Behind the scenes at the Calvert Marine Museum
FossilsAnonymous posted a topic in Fossil Hunting Trips
Amazing day yesterday! @sharkdoctor and I spent all day at the Calvert Marine Museum’s collection sorting through and cataloging pieces of his collection either loaned or donated to the Museum. When I say amazing fossils, I mean it. Crabs, birds, whale material, possibly a new species of seal, teeth, turtle plates, and more. @sharkdoctoris a really cool guy because he focuses all on adding to science and not just trying to grow his own collection. Plus, he’s so informative! After completing the cataloging of his collection we proceeded to catalog some of Bretton Kent’s world class shark tooth collection. The incredible John Nance took us through the museums archives, showing us the only Hexanchus from Calvert, 3 inch makos, Gomphothere Teeth, rare species of shark, a whole crocodile, and other innumerable fossils that would be any collectors dream to have. Thank you John Nance, @sharkdoctorand the whole fossil community for building this up.- 29 replies
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I gave the chimera fin spine that I found at Douglas Point to the Calvert Marine Museum. They had mouth pieces and a cephalic hook, but no fin spine. I haven’t checked out the museum in years. It has a very nice fossil exhibit.
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Slow evolution with loss of cusplets described in paper out of Calvert Museum. Gradual transition seen over millions of years. https://m.phys.org/news/2019-03-megalodon-teeth-evolved-ultimate-tools.html
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Hi all, I am thrilled to bring you an update on the object I posted not too long ago in the Fossil ID section. As advised, I brought it to the Calvert Marine Museum to be examined by expert eyes, but unfortunately the paleontology staff was not at the museum when I arrived, so I left the fossil with them along with my contact information and details about the location and age of the fossil. This was a few weeks ago. I just recently received a voicemail from the museum staff notifying me that an expert on marine mammals had taken a look at the fossil and rather easily recognized it as a dolphin periotic, a bone in the ear! When I called back and asked about the shark tooth that was buried in the bone, they said he must've missed that (I don't blame him; it's a small tooth!), but I asked if it would've been a result of feeding. They confirmed that the tooth undoubtedly wound up in the bone when a shark bit into the animal, but suggested that it is much more likely that it was a result of scavenging, not hunting. Because of the size of the tooth especially, it is most reasonable to conclude that a small shark scavenged the remains of the dolphin after it died, as a shark of that size typically would not pursue such large prey. Regardless, I think it's a spectacular find and it's certainly one of my favorite in my collection. A huge thank you to the experts at the CMM for their unparalleled expertise and willingness to help out an amateur. I'm very happy with my find, and can't wait to go pick it up next time I'm in the area. Thanks for reading this update! ~David (p.s. below is a picture of the fossil that I posted on the original ID thread. I'll post more detailed pictures once I pick it up from the museum)
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Hi all, I've been considering applying to the Calvert Marine Museum Fossil Club. It looks like a great place to share your finds and discuss paleontology with other fossil hounds in the area. The club apparently also goes on occasional hunting trips as a group, which would be fun, especially if we could get some special access to typically restricted areas. And as an added bonus, it would probably look really good on college apps. I am just wondering if there's anyone here on the forum who is already a member of the club who would be willing to give me some more info. I'd love to here more about what goes into being a member of the club, exactly what they do at meetings, how the trips work, etc. I just want to know if it would be worth joining, because the distance is not ideal (about 2 hours as opposed to the 1 that it takes me to get to Brownie's), but I'd be willing to make the trip if it's worthwhile. Any information from members would be greatly appreciated. Thanks!
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Why a whole bunch of you are having a great time at Aurora (yes, I wish I was there), we spent a couple days on the Potomac and took a trip to Calvert Marine Museum. On Friday we ran around and did some errands before heading down to the river...then we realized that we had screwed up. It was the first day that the river was calm after a few days of rain and wind and the beach looked absolutely prime...and one lady that we see there all of the time had a full collection bag. Oops! We still had a good time but I would have loved to have been the first one on the beach. Saturday we celebrated our anniversary by heading over to Solomon's Island and the Calvert Marine Museum. I had a bunch of teeth that I donated to the fossil pit there, my kids love digging in there and I expect every other kid that goes there does too. Today we went back down to the river again and it was slim pickings...the busiest I have seen it this year, people everywhere. We didn't stay very long but we still had a good time, even stopped to help a box turtle cross the road on the way out. Friday's haul. My wife found the big Mako. Partial shark vert. Saturday at the Museum...Love this place! These will make some kids happy! Sunday's haul. Mako...too bad it had damage. Still love finding these, even when broken. Some of my favorites from today, haven't found a stingray barb in a while...I'd like to find a big one some day. My little buddy when we were leaving.
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Keeping The Museum Busy.
PaleoRon posted a topic in Partners in Paleontology - Member Contributions to Science
I have been donating fossils to museums and educational facilities for decades. For the past several years I have been donating almost exclusively to the Calvert Marine Museum in Solomons, Maryland. Dr. Stephen Godfrey is the curator of paleontology at the museum. I have tortured him repeatedly with boxes of cetacean bones from various river sites where I dive for fossil shark teeth. Most of the material is fairly mundane, but there have been a few surprises as well, including new species. I have had several people ask me what kind of material I donate, so here is a pic of the last batch of fossils that I took to the museum.