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Shark Cretoxyrhina mantelli Eagle Ford Formation
JamieLynn posted a gallery image in Members Gallery
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From the album: Texas Cretaceous Fossils : Sharks and Rays
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Hey guys, I've been off the radar for awhile .. work you know .. been working on Siggraph for those of you who are familiar with software development. Just wanted to start a new topic here .. This one is right at 3.00" - 7.62cm C. carcharias Bahia Inglesa Formation South of Caldera Provincia Copiapo III Regio de Atacama Chile
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Discovering the Kamp Ranch Limestone: Ptychodus Frenzy
EPIKLULSXDDDDD posted a topic in Fossil Hunting Trips
This month I decided to take on the challenge of finding my first Kamp Ranch sites. It's not the easiest thing to do since, to my knowledge, the elusive layer is not mapped anywhere. I spent a lot of time scouring the waterways of North Texas and by the end, I came up with two distant potential spots for a couple days worth of hunting. I traveled to the first site one sunny morning and after a long walk, I finally made it to the water's edge where I met endless limestone slabs filled with Collignoniceras woollgari impressions, meaning I was just in the right place. I readied my roc- 7 replies
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Eagle Ford Shale with Teeth from Central Texas
Jackito posted a topic in Member Fossil Trades Bulletin Board
I have some extra shale pieces I'd like to trade. The shale is from Central Texas, and is cenomanian/turonian. Pliosaur, plesiasaur, mosasaur, and coniasaur is possible but really rare. The most common teeth are shark and fish and assorted bits. I've seen very few invertebrate material. Mainly shell and shell hash. The piece I have for trade has a two nice teeth showing on top, two ptychodus on the sides, a fish vertebra, and some fish teeth showing. There might be a couple more shark teeth and lots of smaller fish teeth inside the rock. Check out my trip reports and you can see mo- 1 reply
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Identification Cretoxyrhina teeth are simple in design, having a triangular crown with smooth enamel and non-serrate edges, a thin lingual dental band, rounded root lobes, a lingual root protuberance, and no nutrient groove.1,2 Comments This tooth is from a latero-posterior position, given the crown's distal curvature. The chalk preserved this tooth very well - the enamel retains a sharp gloss comparable to that on modern sharks' teeth. References 1. Bourdon, Jim, and Michael J. Everhart. “Analysis of an Associated Cretoxyrhina Mantelli Dentition from the Late Cretaceo
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3 New Spots; 30 Days; 300 Million Combined Years of Mosasaurs, Sharks, and Mysteries to Discover
EPIKLULSXDDDDD posted a topic in Fossil Hunting Trips
Apologies for the dramatic title. I thought it sounded cool and stuck with it even though 90 + 80 + 80 is only 250 . Anyways... This past 30 days, I decided to make it a point to check out some new spots. I won't be living in Austin soon, so I thought it would be good to branch out and scout some new locations with potential. I've found lots of creek-worn mosasaur bits and pieces over the past year. I'm ready to find things in situ, and, one day, something articulated. It's a tall order, I know, but I feel like it's the next step and really the ultimate goal I've always had. So, th -
I cannot for the life of me figure out what this tooth is. When I first found it I was sure it was Cretoxyrhina but with further inspection I doubt that’s the case. Does anyone have a clue what shark this mysterious tooth belongs to? (Found in alluvium/ozan)
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It's been over a month now since @Jared C and I found the Eagle Ford Xiphactinus. In the weeks that followed our discovery I was able to get in touch with the right people at Baylor University where I go to school and start to organize a retrieval project. Unfortunately I haven't been able to make it back to the site since then as all involved will have to wait for the wheels of bureaucracy to turn enough for us to have the proper permission necessary to return. So I was left with a problem: my first visit to the Eagle Ford turned out so well that I wanted nothing more than to go back, but I c
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.7” tooth, Blue Hill Member, Carlile Shale, Jewell Co Kansas. I am not super familiar with the Carlile Shale fauna and I think this is a Cretoxyrhina but I’m not 100% sure I’m correct so I thought I seek other opinions.
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From the album: Sharks
Just a handful of Cretaceous species, most from North Texas. The sea that bisected North America ~85 million years ago played host to a diverse and burgeoning ecosystem that supported many species of sharks. It was likely due to specialization that allowed these sharks to all live in the same place and time. -
I've recently become very interested in the sharks of the Cretaceous. The largest of all sharks during this time period was supposedly Cretoxyrhina mantelli, or the "Ginsu Shark". It likely would've highly resembled the modern Great White. I looked up a few images of their teeth, but I was wondering if anyone who hunts the Cretaceous here on the forum has any of their own? If so, I'd love to see them! Hoppe hunting!
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From the album: Sharks
A gorgeous tooth from one of my favorite sharks! The enamel isn't polished - the chalk preserves its shine extremely well - it's as shiny as when it fell out of the animal's mouth! -
From the album: Sharks
A beautiful tooth from one of my favorite sharks. This one is extra special because of the self-inflicted bite mark - a gash seen on the left in lingual view. Apparently their bite was strong enough to cut their own teeth! -
From the album: Sharks
One of my favorites - the "ginsu" shark. This one was found at the DFW airport in the 80's. -
From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Cretoxyrhina vraconensis. I believe this is a lower anterior, but I could be mistaken. -
Associated Cretoxyrhina (vraconensis) dentition
britishcanuk posted a topic in General Fossil Discussion
Hi, Recently, I had the good fortune to acquire this set of Cretoxyrhina (vraconensis) teeth from the Britton Fm., Texas. I have a detailed account of it’s discovery which describes almost all of these teeth being found together in an area about 18” x18”, with a few stragglers found just outside the main pile of teeth. It’s not complete, but It looks like most of the positions are represented. Some of the larger anteriors were not recovered and I suspect at least one or two positions are missing. I have arranged these teeth into positions that look close to me, but ther- 7 replies
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I have here two shark teeth from the Cretaceous of Texas that I'm hoping to ID. #1: Dwardius ?woodwardi? The first tooth below is from Dallas, TX, from a buffer zone between the Eagle Ford and Woodbine formations (i.e., late Cretaceous, ~90-96 mya). I previously posted this tooth in the mailbox score thread and the @ThePhysicist tentatively IDed it as Dwardius (woodwardi?) but recommended posting it in the ID forum. I'm finally getting around to doing that! This tooth measures 25 mm on the slant.
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From the album: Post Oak Creek
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While my prime focus is essentially learning how to accurately describe Nature in the precise language of mathematics, I've always been intrigued by natural history - it's actually what started me on the path to physics. The sort of interrogation that paleontology practices provoked me to think and question even further, down to the fundamental science which makes it all work. Collecting fossils has brought a large amount of enjoyment to my life, and is often a welcome distraction from what can sometimes be straining work. The knowledge that I accumulate along the way is also part
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From the album: Sharks
Nearly flawless lateral "ginsu" from the Smoky Hill Chalk of Kansas, USA.- 1 comment
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From the album: Sharks
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Found ths shark tooth in Ignaberga Sweden. Its around 1 cm big. Some info about this locality. Its upper Cretaceous deposits where Cretoxyrhina can be found.
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From the album: Post Oak Creek
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A Kem Kem Leptostyrax for Cretoxyrhina ?
fossilsonwheels posted a topic in Member Fossil Trades Bulletin Board
I need a few more Cretoxyrhina for the display I’m trying to finish. I really do not want to spend money so I’m trying a trade. I recently got some rare Kem Kem Lamniformes teeth and can offer up a Leptostyrax. It is the largest of those I got at 2.6 cm. There is some matrix on the root but the tooth is in pretty good shape. I would consider teeth from any location but my preference would be a location I don’t have such as New Mexico or Alabama. PM me if you’re interested -
Identification: ginsu teeth have broad lingual dental bands, rounded root lobes, a strong lingual protuberance in the roots of anterior teeth, smooth crown faces, and no nutrient groove. Notes: Has damage on the lingual side, perhaps a self-inflicted gash as the tooth fell out of the mouth. Otherwise, a perfect tooth with a very sharp point.
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