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Going through some Lee Creek micro matrix from the Aurora Fossil Museum, and I found what I believe may be a Rhincodon (whale shark) tooth. What do you guys think?
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From the album: Aurora North Carolina Micro Matrix Fossils
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From the album: Aurora North Carolina Micro Matrix Fossils
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I've been sorting through some Kemp Clay (latest Maastrichtian) micros recently, mostly in search of rare sharks. The majority of teeth I've found are easily identified from elasmo's web page on Kemp Clay sharks which itself is based on Case & Cappetta 1997 Kemp Clay paper. However, this singular tooth does not seem to match well with any of those described species or even genera. The closest tooth I could find was Scyliorhinus ivagrantae which is still very different. I think my specimen is Pararhincodon sp., but I cannot find any reputable reports of the genus from the Maastrichtian of Texas (it does show up in the Campanian however). In Germany's Maastrichtian, there is a species called Pararhincodon groessensi which could be it. I did manage to find a senior scholar thesis from an A&M undergrad (Janus 2009) that reported Pararhincodon sp. from the Kemp Clay, so there's a sliver of evidence. Here's the photos: Lateral view Basal Labail Lingual Other views Thanks
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The Natural History Society of Maryland will hold its annual Shark Fest in June. Interested folks have voted for the whale shark as Shark of the Year. The Society is a volunteer organization and it does not have any whale shark teeth in its collection. We recognize that the whale shark is a filter feeder and its 300+ teeth are non-functional. But as part of its display they wanted to show some whale shark teeth. Does any TFF member have any that they would be willing to donate, trade or sell for NHSM to display. Any donation would be officially recognized with a letter. I was not able to locate any for sale online so I am asking TFF members for their help.
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From the album: Lee Creek
Rhincodon cf. typus Pungo River Fm., Aurora, NC, USA a minute tooth from the biggest fish in the sea - the whale shark. Being filter-feeders, their teeth serve no known function and are considered vestigial. -
Identification: Ray, Clayton E. and Bohaska, David J. 2001. Geology and Paleontology of the Lee Creek Mine, North Carolina, III. Washington, D.C.: Smithsonian Institution. https://doi.org/10.5479/si.00810266.90.1 From Page 99 & 100: "The crown of the Lee Creek Mine tooth (Figure 15o) is sharp, slightly curved lingually, and has a perfectly smooth surface. It is compressed laterally, and the cutting edges are distinct but dull. A narrow and relatively long apron descends onto the lingual face of the root. The roots of these teeth are bulbous and are wider at the mesial and distal sides than at the crowns, and they possess a well-marked central foramen and transverse groove. A pair of prominent lateral foramina are located high on the mesial and distal sides of the root, and the basal area of the root is marked by small, irregular vascular openings. These teeth are identical to those of the extant species, Rhincodon typus, Smith." Whale shark teeth are very obvious, with a tall, bilobate root, and a narrow crown. More on ID.
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From the album: Lee Creek
Rhincodon cf. typus Pungo River Fm., Aurora, NC, USA A minute tooth from the biggest fish in the sea, the whale shark. Being filter-feeders, their teeth serve no known function and are considered vestigial. -
I needed something to satisfy my itch since I still cannot get out. So i had purchased a box of matrix from Lee Creek. I spent the weekend seperating the matrix into 4 different sizes. I was excited to try my smaller double decker sifter and it worked perfect. I also used that over a window screen. I found a ton of new items that I do not have in my collection. Including my first croc tooth. It is super tiny but it is my first. These are my finds after my first run through. I think I am going to have to get some type of magnifying glass for the smaller stuff. Any feedback on incorrect ID's is much appreciated. Enjoy the pics. Sawshark - Pristiophorous Croc Tooth Basking Shark - Cetorhinus maximus Whale Shark - Rhincodon Typus Dolphin Tooth Hammerhead - Sphyrna Zygaena Mako
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A very nice whale shark tooth from Lee Creek.
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Let me first say im doing this all from my smartphone, so sorry for any bad pics. I bought a micro camera attachment for my phone for $20 a few weeks ago and im still ironing out the details of how to get a presentable picture from it, but here's my first attempts. I found this little guy last night while sifting some Lee Creek micro matrix. I was pumped when i found it in my first couple of scoops. I thought it to be a Whale Shark tooth, but now after seeing some pictures im not so sure. Any help is appreciated guys!
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I was getting familiar with my new microscope and decided to look at some of my whaleshark teeth from Lee Creek matrix and I noticed one of them had cusp. I was wondering if it could be a Palaeorhincodon tooth?
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I have two teeth shown below. The long skinny ones I have been told are whale teeth and the other I was told is a porpoise tooth. I found images in a book showing it may be a wolf sized dog, a seal or or possible a whale shark. Anyone have any opinions? I have a few of both in a display shot in the last image. Thanks in advanced for the input!
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