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I took a trip to the lower Potomac 4/29/20. I found plenty of fossils including this 1 15/16" C. Auriculatus, a 1 7/8" Striotolamia striata, a 1 3/4" C. Megalodon, And a 3/4" crocodile vertebrae. The Auriculatus and the meg were pretty worn. But I found all of these fossils two hours, and a big tooth is a big tooth! I'm happy to take them either way. The croc vert was a bonus.

Hi, longtime lurker first time poster here. I was wondering if you guys can help me ID this concretion my family found years ago near Calvert. I believe it might be a trace fossil of some kind, possibly a burrow or tunnel. I have found similar types at Westmoreland State Park. I can upload pictures from different angles if needed. Any suggestions of what it could be?

Hi. Like many, I am working from home. NJ has closed school for 5 weeks. It’s only been a week and I’m going crazy. Plus I am a financial planner so my days have been challenging to say the least. TFF has been a great escape to take my mind off of everything. I also thought I would take the time to really nail down some IDs on these teeth from the Potomac. I thought maybe I can get some confirmation on my IDs and use them to compare with the others that I have collected All the teeth are from Douglas Point. Thank you for any feedback, be safe, and everyone keep posting great content!

I found this fossil several years ago while I was looking for shark teeth along the bank of the Potomac. The exposed cliffs in the area are part of the Nanjemoy formation, and the fossils I find are usually Miocene or Eocene. I have no idea what this fossil is (Maybe a tooth?). I figured that I would finally get around to posting this in hopes that someone on this forum can help identify it for me. More pictures available upon request. Thanks, Christopher

Hi all, I found this chunk of bone at Purse State Park this November. It is from the Aquia Formation, which is of Paleocene Age. I was wondering if it could be identified to either crocodile or turtle, considering that these are the only two bony vertebrates that exist in large amounts in this formation. Or, of course, it could be nailed down to chunkosaurus status considering that it is relatively worn and isn’t very large. Thanks in advance!

Had nothing else to do yesterday so went to a spot on the Potomac. Found bunch of teeth and some nice bone. Ones a rather large piece about 6 inches long and 5 wide. Another nice half of a vert that's broken. Fav two are the porpoise teeth? Water was awfully cold and the wind wasn't cooperating so only looked for a hour. Then had to get back in truck and warm up. Temps near water was 45 and inland it was 59. Quite the difference and wasn't dressed for that. Not sure what the big piece of bone is from or the vert? Anyway, nothing great just better than doing nothing on a Saturday!

Hey guys, little help on these 2 pieces of bone. Ones a simple vert that's broke in half. Woulda been really nice. About 2.5 inches across. Any ideas? Shark? Dolphin? Other big slab of bone that's got 2 ridges that I can tell on the outer side. Whale? Some other sort of animal? It's about 5.5 inches long and 4 wide. Found in the Potomac if that matters on Virginia side. Tons of small bone and teeth but just curious what these may have belonged too. Any help greatly appreciated and thanks.

Found this on the shore in the Potomac with tons of other ray fossils. Is this from a ray or something else?

I have to say that today was a fun day, I took @Darktooth and his family out for some fossil hunting along the Miocene areas of the Potomac. We had a beautiful day for it, just wish that the clouds that had been forecasted would have showed because it became extremely hot out there! Nevertheless, we persisted and spent about 5 hours looking for fossils and we were all wiped out by the time we got back. I know that Darktooth will be posting his own report, the following is just what my daughter and I found. I had a great time with you Darktooth, I hope you and your family enjoy the rest of your vacation! Total haul of our "small stuff" Nice "doorstop" whale vert A nice hastalis, really the only tooth I found Crab, I just started to look for these. Never really had the eye for them before. My daughter found this piece of fish jaw with a tooth in it. She really didn't know what she had but thought it looked neat and put it in her bag. I found this fish vert in a chunk of matrix A couple of small shark verts A little ecphora Now for the really cool find, definitely a trip maker and my best find this year...three attached verts that have been tentatively identified as marlin. Dr. Weems will get a look at them on Monday so I may get an updated ID then.

I finally was able to take the family down for a short trip to Maryland this past weekend in hopes of finding some shark teeth. Despite the heavy crowds everywhere we went we able to have a fun filled weekend. We started off Saturday morning and were the first on the beach at Flag Ponds Nature Park. The tide was coming in but we still managed to pick up a few teeth. Our best find there was a nice mako, almost and inch. We stayed there until lunch, took a break and went off to Matoaka cottages for the afternoon/evening. We didn’t find nearly as many teeth there but were able to find a few nice hemi’s, the biggest being right around the 1 inch mark. Sunday morning we got up and made made our way over to Purse Park. We got there around 11am and were met with a full parking lot. I was a little discouraged knowing it would be crowded but we went ahead to the beach. Wow was I glad we did! In about 3 hours of searching time we managed to scoop up around 200 teeth! Most of the teeth were very small but we did find a few nicer ones there as well. Overall I’d consider the weekend a complete success! This was our first trip with fossil hunting as the specific focus. Despite the heavy crowds everywhere we went, we still managed to bring home over 200 teeth, at least 50 ray plates, and numerous other miscellaneous fossils. I can’t wait to go back!

Hi, We are doing a unit on geology/paleontology in our homeschool with the fossils we find. I was wondering if anyone knows the difference between the Aquia and Nanjemoy formations. I know wikipedia is not perfect but I am not an expert and it lists them as separate formations albeit both from the Paleogene. I have read Paleocene/Eocene border for the Aquia formation. Is that correct? The Nanjemoy formation I had not read about before today. Is it just the same thing on the Maryland side of the River instead of the Virginia side? Thanks for the help, Kate

Hi everyone, During a trip to Purse state park in Nanjemoy MD, I found an odd "rock" while looking for sharks teeth. It appears to be shaped like some kind of mussel or other bivalve. Any ideas what it might be? Unfortunately I don't have anything to measure it with, but it is approximately 2 1/2 inches long.

Okay, I concede early on that this may be abiotic, but I just have this gut feeling that it's not an accidental pattern. I found this on the banks of the Potomac River in Virginia. The geology there is mostly early to mid-Miocene clays with a Pleistocene terrestrial bog iron layer on top of 40 to 80 ft cliffs overlooking the river. All fossil-bearing. This looks like clay, but I'm not positive that it is from the Miocene layers. There is a row of tiny lumps all about the same ship and almost in a contiguous line. One is just a little offset.

Okay, here's a weird one for any shell people out there. Found this on the Potomac's beach where the cliffs have Eastover, St Mary's and Choptank FM exposures. At first, it was a blob of clay with what looked like a hinge showing at one end. I chalked it up to oyster or mussel. Brough it home, cleaned it up most of the way and said, "What the heck?" The texture is really strange. It's convex where I would expect it to be concave. It's lumpy, but not heavily sculptured. I took it to some people who were more familiar with the spot and/or knew something about vertebrates, in case my mollusk assessment was totally off. No, looks like invertebrate of some kind, they said. I've identified and catalogued over 70- species from the cliffs, pouring over the same references for countless hours. There are a few approximately the right shape, given how broken it is, and have similar parallel growth lines, but the texture and lumps???? And that weird ridge 1/2 of the length from the beak? Multiple shells overlapping? Again I say, "What the heck?"

[WARNING: As is my custom, this trip report is exceedingly long, verbosely worded, and copiously illustrated with photos.] (It may be a good idea to find a comfy chair and grab a drink and some popcorn.) Since Tammy's retirement earlier this year, we've been busier than ever. We finally made it to Iceland this summer and saw dozens (if not literally hundreds) of waterfalls in that geologically interesting country. While talking about waterfalls ("fossar" in Icelandic), Tammy had realized that I had somehow not yet seen Niagara Falls. Tammy did not do a lot of vacation traveling when she was younger but had visited Niagara several times in her youth. She decided it was high time I experienced the power of Niagara. It could have been a simple trip--a flight up to Buffalo, a day out on a boat getting drenched at the base of the falls, and home again with little more than a long weekend invested. Somehow though, I have a remarkable knack for constructing enormously detailed travel itineraries--and this trip was no exception. Our anniversary month is October and so with the prospect of some multi-chromatic autumn foliar displays we decided that we'd plan a roadtrip that included Niagara Falls as its underlying motivation. It didn't take me long to realize that there are a lot of great TFF members up in the New York and Ontario area. Additionally, some members from the Virginia/Maryland area suggested meeting up during our last roadtrip through the Carolinas but that trip was already lengthy and involved. Perhaps, I could combine visits with a number of TFF members along the way and do a roadtrip down the Eastern Seaboard? As I started contacting prospective members to get the idea kickstarted, the starting point of our trip changed and we tacked on several extra days to the start of our trip. My brother and his wife had just bought a new house in the north side of Chicago. He decided that since all of the family holidays (Independence Day, Thanksgiving, Christmas) were already claimed by other family members that he would start the tradition of Oktoberfest at their house--first Saturday of October. The itinerary for our trip was still in its early stages so we were easily able to incorporate a trip up to Chicago and link it to the start of our roadtrip. We considered flying from Chicago to Buffalo and picking the rental car there but the cheaper airfares were (not surprisingly) at rather inconvenient times (who wants to check into a hotel in the wee hours of the morning?) but an alternative soon presented itself. Since one of the places we'd hoped to visit along the way was the Devonian Hungry Hollow site in Arkona, ON, we'd have to backtrack west if we started in Buffalo but it would be conveniently along the route if we simply picked up the rental car in Chicago and started the roadtrip from there. This also allowed us the opportunity of visiting the small town of La Porte, Indiana where Tammy lived at one time. Things were falling into place. Of course, that is not to imply that my roadtrips are in any way quickly improvised--I think I spend as much time planning them as I do driving them. Starting the trip in Chicago allowed us both to visit family and work our way through all of our favorite food groups (authentic Chinese, Indian, Middle-eastern, and deep-dish pizza ) before gorging ourselves on lots of tasty German food and Oktoberfest-themed adult beverages at my brother's new place. Finally, we were ready to start rolling some miles (and kilometers) onto our trip odometer and we picked up the rental car and got underway. We planned on making London, ON for our first night and since it turns out it is only a mere 6 or so hours driving from Chicago, we had a bit of time to drive through La Port. It had been nearly 40 years since Tammy lived there and (as expected) much of the area was barely recognizable and not much as she'd remembered it. There were a few landmarks still in place and it didn't take us long to find the house her parents owned in town. The main floor was the Chinese restaurant they owned and the second floor above is where they lived. It's always interesting indulging some nostalgia and visiting places from the past. After a bit of driving around town we picked up the highway and in time crossed the border into Canada at Port Huron. We got to bed late that night but we had one of the longer driving days behind us already. On the road again--and a stop at a childhood home in La Porte.

I found this scapula this weekend along the Potomac River in Virginia. It's a vertebrate. That's all I know for sure. Most of the cliff next to the beach where I found it is miocene marine, but the very top is pleistocene terrestrial. The grid is in inches.

Headed out to the potomac this morning and man was it nice out. Hit low tide and made my way to the cliffs, which all fallen right now btw. Found some nice sand tigers today’s and some smaller beaten otodus. Highlights of the day were a nice little croc tooth and a croc vert which is a first for me. I don’t seem to find much bone in the Aquia formation.

I would consider 2016 to be the year that my fossil hunting career really took off, I had spent trips prior to this grooming and developing my skills and it began to show in this period. My school vacations have always been the time where I've been able to get out into the field and go fossil hunting, this particular opportunity was afforded to me by my class trip to Washington D.C. which then lead into my April vacation. Having devised a plan to go fossil hunting before leaving, my dad picked me up at the end of the DC visit before the rest of the group took the grueling bus ride back to NH. From there we went south to Charles county, MD with the intention of going to Purse State Park in hopes of finding some Paleocene shark teeth. And find them we did! After parking, we walked down a trail which led down to the waterfront and a long strip of gravely beach. I soon found out just how bountiful this area could be when looking in the right places. At the end of the day we had found plenty of Shark's teeth and ray dental plates. The majority of the teeth came from various species of sand tiger sharks which patrolled the waters of the greater D.C. area 59 million years ago when it was covered by a warm shallow sea. Here's the haul we had after a few hours collecting.

Hello everyone, I will be visiting the Washington DC area, and want to take a trip to the Potomac to hunt for some shark teeth. Can anyone suggest a good area, and possibly some gear to wear this time of year? I normally wear a wet suit and waterproof boots for this sort of thing and stay relatively warm, so I'm not too worried about the cold. I am looking for a spot with easy access, and preferably not private property, unless someone is willing to let me search on their land. I have never been to the Potomac before, so any suggestions are welcome! Thank you!

I found this while hunting for shark teeth at Purse state park in Maryland. It looks like a claw, any help would be appreciated.

Went to look for shark teeth the other day on the potomac, md side. Found small teeth, and also a rock that looks interesting. Has some crystal or something on it. Any one have any ideas?