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Showing results for tags 'cow shark'.
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Found in Tampa area likely from shell pit. Haven't found one of these, is it tiger shark? Its decent size for what I've found in other species. Appreciate thoughts!
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Have made several trips, lots of teeth (mostly small and broken), but have done better than usual on cow shark. Nothing particularly dramatic. A few interesting things will post ater for ID. Generally mostly sand tiger per usual (and a few at top left not clear what they are to me). Not as many with cusps, some sites were gravel and shell bit holes; a long rough history of washing in the sand perhaps. Highlights (second) some verts, bunch of angel shark teeth, lots of drum teeth, a few sand tiger parasymphysials, one pretty just over an inch mako, and three cow sharks (been a good year so far for those; mostly I find broken). Last photo is of the smaller stuff. .
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Hunting has been slow for me (Covid has sent a lot of competition out on the beaches!) The photo is from about a dozen trips, several with No teeth. I was lucky to find a few mako teeth, including one massive one at about 2" but tipped. I found less sand tiger spikes than usual, but one pretty cowshark (rare here). Maybe after the holidays I'll get out more. Merry Christmas everyone and good luck even to my "competitors"!
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Went at low tide to a small public beach on the Rappahannock. A few people laying on the sand soaking in the nice weather. One guy raking the sand, looking for shark teeth, fossils or maybe beach glass. I walked along in the water looking for teeth with faint hope, but was lucky! Although mostly just long rusted and tide- and sand- burnished metal bits, I did find some teeth including two NICE cowshark teeth (perfect compared to the broken rootless ones I'm lucky to find usually). Also found an interesting skate scute (small enameled spot in the center), a reddish sand tiger spike, a thresher shark tooth(?) plus another gray, requiem shark tooth and what looks like a flattened conical tooth. Lots of small fossil bone ("whale bone") but nothing obvious to ID. Very happy with the cow shark teeth, and a nice return on an hour walking a public beach!
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I recently picked up three cow shark teeth with uncertain identifications. I can not be sure myself so I thought I’d get some help sorting this out. First one is 19mm and comes from the Pico Formation, Ventura County California. I believe it is Pliocene in age. I think it is a Hexanchus tooth but Notorynchus is known from at least one So Cal formation similar in age according to fossilworks. It is missing the largest cone. Even though I lean 6 Gill, I’m almost hoping somebody thinks 7 Gill because a California 7 Gill would be sweet lol Either way, it’s a really pretty tooth. Next are two from the Miocene deposits of Gironde France. Notorynchus and Hexanchus are both described from this location and they are small partials. I really can not figure out if I have two Notorynchus or one of each. I’m rooting for a 6 Gill but a great location to add regardless of the ID. All opinions are welcome.
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I found this small fossil along the Calvert Cliffs (Miocene exposure) in Maryland. My first thought was a jaw bone with teeth, but my working hypothesis now is that it's a very worn cow shark tooth (Notorynchus sp.). What do you think?
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I have found several smaller fragments before, but never an intact one. This one turned up at the end of a very long day and I fortunately spotted it as my son was shoveling matrix into the sifting table. I startled him mid-shovel by shouting "STOP!" when I saw a row of white points sticking out of some matrix. Son was just about to throw another shovelful on top of it. Nice reflexes by him to change course mid-air to avoid me (now shielding the tooth with my body - LOL). Worth it. :-) Definitely had potential but I didn't know how much root was going to remain. After some careful cleaning I was thrilled. I can see from those cracks why I've had such a hard time finding a complete one.
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- bakersfield
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From the album: Misc. Cenozoic Specimens
This might be H. agassizi, I am unsure. -
Hi Randy here. A friend of mine found this tooth today along Calvert cliffs.its a center cow but is it pathological?
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From the album: Cenomanian Shark Teeth, Tambov Oblast, Russia
Hexanchidae unindent. (Grey 1851). I am unsure if a species of cow shark has been described from this region, as I do not have access to much Russian literature. Slant length is described by the length from the primary blade's tip to the end of the root. Width is indicated by the root length. -
Me and a friend spent a couple hour searching and a little sifting and left with over 100 teeth! Here are the best from the trip, a couple of makos, a hand full of nice tigers, two bronze whaler?, two cow sharks, and a baby posterior megalodon tooth!
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Went out on a hot and humid morning to the creek, digging and sieving was nasty and the bugs were bad. Found the typical sand tiger spikes, lots broken, and some drum teeth, but surprisingly no angel shark teeth or vertebrae (washed away?) A bunch of white snail-like shells usually find similar bigger ones on the beach. Most interesting was a chunk of turtle shell (from the edge, bigger than usual) and a tooth (I find lots of busted ones, but this is almost intact. About an inch long, dull enamel half way up on both sides (one side cracked); the root is almost square and appears hollow).
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A little under the weather (and having truck trouble) but took a break for a few hours hoping to find more shrimp coprolites after recent thunderstorms. Humid, but not particularly hot, lots of frogs. Despite lots of digging in last week's spot, not much mixed in the gravel, mostly small broken stuff (one vert, one angel shark tooth, some drum teeth). I always wonder if I am 'mining' an area of the stream bed that was picked over 30 years ago. Finally found a mottled tiger shark tooth, relatively rare on that site. I have some small pieces drying but no strong suspicions of shrimp coprolites. Before leaving I hit an older spot which has been good for cowshark teeth. First screening found a broken ecphora, a pretty rootless cowshark tooth and a broken cowshark tooth. On the way out checked two other spots, maybe next week?
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Our Shark Education Program- Cows, Crows, and Goblins
fossilsonwheels posted a topic in Member Collections
After the Hybodontids, our program starts to transition toward the modern sharks. We introduce lamniform sharks and the cow sharks. We will not be able to spend much time at all on the Cow and Crow Sharks. They only get a brief introduction and a look at the teeth. Squalicorax is an important species for us even though we do not spend a lot of time on it. The students in first few classes we do presentations for will be going home with Squalicorax teeth from Morocco. We would like to spend more time on the Cow sharks eventually but we only have one tooth to show them and we will have to edit content to free up space for them but I will work on that down the road. The primary focus in this section is Scapanorhynchus. The first shark art Carter did was a Goblin and we do give them a lot of time in the presentaton. They look cool and have been around for a long time. We present the kids with a nice assortment of teeth and some cool science. The teeth were important adaptations for catching fish and the snout had the ampullae of Lorenzini for sensing changes in the electro magnetic fields around them. We compare this to the modern hammerhead which we do not cover in the program but gives the kids a sense of how the adaptations of hammerheads work. We also talk about fin structure and being able to tell they were slow swimmers. The extend-o-matic jaw is another adaptation we cover with this species. I am happy with the fossil representations for now though I really want to add more Cow Shark fossils at some point and Anomotodon would also be a good addition. The fossils for the presentation.. Pic 1 Hexanchus andersoni from STH. I know H. andersoni should chronologically fit later but Cow Sharks fit here and this is the only one we have for now. Pic 2- Squalicorax pristodontus from Morocco. This is our largest Squalicorax tooth. The kids will get these teeth to take home so while we do not spend a lot of time on them, the teeth are very important to the program. Pic 3- Scapnorhynchus texanus and Scapanorhynchus puercoensis. Our nice little Goblin Shark display with some of our best teeth. Two of the texanus teeth are over 1.5 inches and the puercoenisis teeth are uncommon I believe and pretty super cool.
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Hi all, For whatever reason, I never got around to posting this. After a relatively unsuccessful day at Bayfront Park back in 2018, my dad showed me this tooth, unsure of what it was. He said he had found it while sifting in the creek that runs under the bridge near the entrance of the park. I had never really bothered trying around that area because it was so far from any cliff exposures, but I suppose he proved that some of the best finds may be where you least expect them. The second he pulled out this tooth, my jaw dropped. It is a FLAWLESS cow shark symphyseal. I hadn't had a single one in my collection until then. I've never seen a better symphyseal than this one, not in a museum or anywhere online. It's absolutely perfect, with exquisite symmetry and phenomenal preservation. Undoubtedly the best tooth my dad has ever found. Although I was a bit jealous that he found it and not me, I was at the same time ecstatic because all of his finds go towards my collection. This beauty is one of my most prized teeth, as I am yet to see a more perfect specimen. The pictures do not do it justice in the slightest. It was found a while ago, but I thought you all would still like to see it. Enjoy!
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Nice little symphyseal tooth.
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Out of action for a bit, but figured a good time to post what I have been collecting since coming back from Singapore summer of 2018. Starting with sandtiger shark teeth, since they are the most common here. Really like the little hook cusps which I seldom see on both sides on the biggest teeth. Cusps are most prominent (but often nubs) on the lateral(?) medium sized wider, root teeth. Symphyseal teeth are not that rare (wish they were cowshark!); often I think one is a split tooth until I examine it carefully; the roots are distinctive. The small teeth may include a few that are not sandtiger, but I'm thinking since they are most common, many of the non-descript small teeth probably are sandtiger. Scale shown for all the teeth in first photo is in cm.
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My hip is bothering me, but we've had beautiful weather the last few days so I had to get out. Ended up being a short trip. Most of what I found was broken and small and about half as many teeth as usual, but I tried. Tape is in cm. A three inch ecphora, but missing a tail. Two or three skate stinger pieces. A nice but hard to scan cowshark upper, and pieces, some fin tilly bones, a few angel shark and drum. Lots of animal tracks along the creek but no frogs, crawfish or salamanders, just scud shrimp.
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Found this beauty during a business trip to Southern California. My first complete cow shark tooth. My best personal find. Measures just shy of 2” from Capistrano formation.
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1. Isurus desori: Awesome Mako, just shy of two inches. One of my largest teeth from Bayfront Park. Found within 10 or 15 minutes of stepping foot on the beach. 2. Notorynchus primigenius: Very nice cow shark tooth. Small ding on the first cusp, but mostly complete and a decent size. 3. Cetacean Vertebra: My first whale vert! This lumbar vertebra was completely buried in the sand, with only the very top exposed. 4. Hemipristis serra: Really cool snaggletooth with nice colors and perfect serrations. Could be either an upper or lower, hard to tell. Most likely upper. 5. Cetacean Vertebra: Another whale vert! This one is an atlas vert, and like the first was found almost completely buried. Very much intact, maybe even museum quality. Please cast your vote! The poll ends at 1:00 p.m. EST. Also, if you haven't already, be sure to check out my YouTube video so you can see these fossils as they were found! The link to the video is in my most recent trip report, titled "Bayfront Park 03/02/19: First YouTube Video"
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Has been about 38 F (~4 C) or less since Sat morning and I was getting cabin fever. The tides are running high for the beaches, east wind blowing in the water. So I decided to go to the creek in pouring cold rain (45F, 7C); the creek was icy cold. Was probably stupid, it was difficult to work some new spots in water high over my ankles and both waterproof shoes eventually filled with water. Both quality and quantity of teeth were low. However I was lucky and found TWO nice cow shark teeth (without roots), a small mako (no serrations) along with the usual sand shark spikes and some small gray shark teeth. No angel shark and few drum teeth? Hopefully will turn up when the water quiets down.
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(I will now be using the poll format, so you can actually click your favorite and the poll will keep track of the votes) 1. Carcharocles chubutensis: MY FIRST MEGATOOTH! A bit of damage near the root and a missing bourlette, but a gorgeous tooth nonetheless. The serrations are absolutely killer. It’s about 1 ¾ inches. Colors completely changed when it dried. I. Am. Ecstatic. 2. Carcharias cuspidata: Very large sand tiger with a beautiful hooked double cusp on one shoulder. Excellent preservation, and certainly a necklace quality tooth. 3. Notorynchus primigenius: A perfect little cow shark tooth. Found in the cove within my first five minutes of collecting. Not very big, but in fantastic condition. 4. Isurus desori: Incredible little mako. It is absolutely pristine, and still sharp enough to cut you. Has that beautiful Brownies blue coloration on the enamel. 5. Carcharocles sp.: Oh, what could have been...this is the tip to what was probably a huge Megalodon tooth. Based on the thickness of the tooth, it would have been much larger than the meg that I found. Still a great find! The tip of a monster.
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I was revisiting some of the shark teeth I've found on previous adventures in order to make a list/catalog of the vertebrate species present in my collection. I found a few teeth which I believe could come from notorhynchus or hexanchus and I wanted to confirm that with members on the forum. I was looking at some of my teeth from the spoil pits of Aurora, NC and the Peace River, FL. 1. Deep rooted specimen with what looks like what would be the first crown preserved. Found in Aurora. About 2 cm from top to bottom, 1 cm wide. 2. Unsure about this one, initially thought it was a tiger shark, but it's rather long at the base and doesn't have the curved root like your average tiger. Found on the Peace River. About 1.4 cm wide and .75 cm from top to bottom. 3. This is the one I'm least confident about, but the root is very wide. 1.4 cm wide and .8 cm from top to bottom.
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Went back to the beach twice after several days of north winds that should have pushed stuff on the beach. Was surprised that there was still snow on the ground away from the water. The surf was rougher both trips than I expected, lots of icy water in my boots both trips. Low tide was not that low (lunar? or need a decent south west wind?) The water was COLD and also cloudy, guessing stuff like shrimp coprolite "burrows" were further out; didn't find one on either trip. Highlight was today, found a nice cowshark tooth (but rootless), a broken cowshark tooth, and two almost one inch makos. Picked up more small "whale bone" than teeth each trip. Wind dropped at the end of the trip and I could have probably found more, but was tired and my feet were wet and cold, so gave it up.
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Hi all, This tooth was found of one of my recent hunts along the Calvert Cliffs in Maryland. I found it at Bayfront Park/Brownies Beach. It is approximately one cm in length, relatively flat, and has multiple worn but visible bumps of enamel that could either be large serrations of some shark tooth or cusps of a symphyseal cow shark tooth. I believe it's the latter, but also recognize that it is a rather uncommon find. If it turns out to be a cow shark symphyseal, it would be my first one! Excited to see your takes on this one. I feel somewhat confident with my standing ID, but would love some confirmation. Thanks in advance!
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