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Showing results for tags 'dermal denticle'.
Found 9 results
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Hello everyone! I took my daughter and 6 year old granddaughter on a “girls only road-trip” to Hanna Park in Jacksonville, Florida for some relaxation time. We did a lot of beach combing and I found some great fossils. I’ve been able to identify the majority of my haul, but need some ID assistance with a few remaining items. I have a some potential dermal denticles and scutes, and a piece of unknown bone. The bone is is very thin, less than 3 mm. I also have two TINY teeth; one may be a barracuda. I believe the other may be a shark but I haven’t been able to link it to a species.
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What did Petrodus sharks look like? (Are they known only from denticles?)
Gramps posted a topic in General Fossil Discussion
All, I have been finding a few dermal denticles in Northeast Oklahoma Pennsylvanian shales. Based on published reports and images from our area, I believe these are Petrodus. I’ve attached an image of two denticles I found yesterday. I’ve been looking for images of the entire shark because I’m curious about the animal’s overall appearance; however, I’m only finding images of the denticles. Do scientists know what these sharks looked like, and if so, does anyone know of resources containing overall images? Best wishes.- 7 replies
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- oklahoma
- dermal denticle
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Hello! Is it possible to identify this scale? May be to order, or family, or genus? Max size: ~ 0,5 mm. There is some relief on the sides of denticle (see arrow). Age: Eocene (Ypresian or Lutetian). Location: Ukraine. Thanks in advance!
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Upper Carboniferous (Duckmantian) Fish/shark tooth from coal measures. N. Wales.
Skatetom posted a topic in Fossil ID
Hi people! I'm a PhD student studying a Duckmantian fossil forest in North Wales. I have found these phosphatic fish/shark? teeth and scales I need an ID on. I suspect they are Adamantina Foliacea (Cuny and Stemmerik 2018) but that is a marine shark and this sequence is almost certainly completely freshwater and thought to be an upland swamp. I'm currently doing isotope work on the nodules and plant fossils and that appears to be confirming this is a completely freshwater system. Anyone have any ideas? You'll have to click on the images again once you've opened them to- 6 replies
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- freshwater
- shark
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From the album: Post Oak Creek
To find denticles, you need to go to the finest grain size. This beautiful one could be shark, but I'm not certain.-
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- microfossil
- sherman
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Here is another unusual find from the Cookie Cutter matrix. Years ago I found a similar on from a different location. Is it possible to narrow this down to shark or ray?
- 9 replies
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- cookie cutter micro matrix
- florida
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I had a few people look at it (including the head of collections at the Nat. History museum in Gainesville) and we were all stumped! Any ideas?
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Does anybody recognize this? I'm guessing a dermal denticle, but the elongated shape is unusual to me. Other microfauna in the matrix includes shark(cladodont) teeth, fish teeth, gastropods, goniatites, crinoid and echinoid plates and spines, ostracods, brachiopods, bryozoan, and conodonts. For scale field of view= ~1cm. Magnification 20X Magnification 40X
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Hey Y'All, I found this cool little denticle while searching some micromatrix that I collected last year. It is the only one of this type that i have found so far. Just thought that Y'All might like to see it. It is 2.25 millimeters long. I tried to get different light and angles to show the spiral ridges that run the length of this denticle, and match up to the cusps around the edges. Hope You find it entertaining! Tony PS I hope I identified it correctly- but with My track record I would not be surprised if it is actually a tooth.
