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Showing results for tags 'plio-pleistocene'.
Found 24 results
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I am finally going through my Florida shark teeth. Most of these are from the Peace River. Hoping to get confirmations and corrections on my tentative IDs. I have numbered the groupings of taxa. Scale is in mm. No. 1: Galeocerdo cuvier? No. 2: Negaprion brevirostris? No. 3: Negaprion brevirostris? No. 4: Charcarhinus spp.? No. 5: Odontaspis taurus? No. 6: Hemipristis serra? No. 7: Galeocerdo aduncus? G. cuvier?
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- chondrichthyes
- florida
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Hey gang, Going thru chucking things out of the garage piles and noticed this good sized, highly weathered chunk of bone which has some parallel grooves/marks that I'm interpreting as possible shark bites. Want to confirm that assumption and ask if that is the case, could the upper 3 somewhat parallel lines and the 2 lower lines be single bites showing 3 teeth and 2 teeth respectively? The one mark on the upper left seems to be slightly curved so would that be consistent with a different angle/different shaped tooth position? Just wondering what you all think? Regards, Chris
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Here's a land mammal petrosal that I've just retrieved from storage. It's from the Santa Fe River, so it's Pliocene or later. It appears to be complete. These petrosals all look about the same to me. Help me out here.
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From the album: BONES
This is the third toe bone of a lamine (that is, related to llamas rather than dromedaries) camelid from the Plio-Pleistocene of Florida. Recovered from a Florida river.© Harry Pristis 2022
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So I've been looking around at the pile in the garage, trying to get rid of some of the junk and taking some photos that I thought you all might be interested in. I think some of you may have picked on my fascination with earbones...If you dont have that fascination keep scrolling....Well, here's one partial example with multiple views that was a little more different than most but I think its a whale bulla. Its preservation is a little different and there is an extra cavity where normally you would have solid bone...just my guess anyways. Also another shot of it on the very left showing some of the other bullas and its relative difference. Maybe its something completely different. Here's a neat little blob of casts of sponge borings and I've been trying to get a real sharp close up of what I think is a bryozoan in the same matrix but its the best I can do. The unknown is really cool but I just cant capture the real coolness with my cell phone..The scaley looking fragment is approximately 6mm long.The preservation detail is remarkable given its only a fragment. I suppose I really should put this in the ID section as I was wondering if these are all same Sconsia species. S. hodgii? Not that important...Didnt realize I had 4 of them until recently. A couple of them have taller spires and I just cant decide if they are all the same or not. Here's a Chesapecten. C madisonius I think. (photos of after and before) that I put in 2-3 hrs here and there trying to clean. Was using dental picks and a brass brush to remove the sandy matrix and endless soaking. I could do more I suppose but I dont have the patience for prepping. I had ideas of separating the valves but maybe in another lifetime. It has all kinds of very small sponge boring holes and grooves that make me absolute crazy. LOL. Was hoping to find that it had attached barnacles but they were gone and I only had scars left. Those of you who have that patience to prep I applaud you! Lastly for all you barnacle and brach fans...I know there are thousands of you..I am one..LOL. So a complete brach Discinisca lugrubris around here is pretty rare. I only have a few and this is the 2nd of 2 brach/barnacle associations I have. What makes this barnacle on top of a brach extra special special was that when I recently was looking for plates/stuff inside the barnacle (which had no plates and mostly just sand) I found another brach...a tiny juvenile! Yeah! So its time for breakfast...Continued hunting success! Regards, Chris
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- bulla
- chesapecten
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I have wondered about this one for several years. It is from the east side of Lake Turkana, in Kenya but I wasn't at the actual spot from where it was picked up, so I don't know anything about the specifics of the location. This was one of at least a dozen specimens that I saw. The other side looks the same as what you can see in the photo. I have wondered if it could be a stromatolite but the shape is odd for that. Could it be some sort of evaporative feature? It is the only one I have, so I haven't tried cutting it open. I'd love to hear some opinions.
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Attached is a bivalve I found in the Bradenton, FL area. It looks like a “cats-paw”. Can someone help me with the identification of this fine fossil? Thanks!
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I occasionally grab a handful of micro-matrix from Cookie Cutter Creek and examine it. Very tedious work. Last night I ran across what I believe is a bone. Hopefully those educated on vertebrates can tell me if it is bone and if so, from what!!!! I am dreaming that it is avian in origin. So so delicate. I am shocked I didn't destroy it during it's photo-op. Thanks for looking. Mike
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- bone
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So I was recently going thru some Florida tooth material (Mio/Plio-Pleistocene) from years ago and realized I had lumped a bunch of this stuff in a packet without investigating them too thoroughly. I started to bug Jeff about several and thought I'd see what you all thought as well so I could learn something more from you all. So just 4 teeth for this thread. I was noticing #1's serrations were pretty coarse and well developed and unusual and I was asking about its possibilities and the meg possibility came up. I then found #2 tonight in another bag and it has some similarities to #1. Neither seem very thick/robust or show a bourlette but their serrations are definitely different than most I have seen. #3 has those finer serrations and shape I usually have put into the Carcharhinus ID bucket. Could they all be Carcharhinus? And lastly #4 may be pathological? What say you all? I know messing with single teeth ID's is pushing the envelope but appreciate any thoughts... Here's another view of just # 1 and #2. And lastly #4: Thanks for the help. Regards, Chris
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- carcharhinus
- florida
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From the album: The Mollusca of the Banjaard
An incomplete bittersweet clam specimen. Because the hinge is missing, it becomes very hard to determine which species it is, which also makes it difficult to determine the age of the specimen, as both Pliocene and Eemian (which contain different species) sediments occur on the Banjaard. Chances are higher that it's an Eemian species, simply because Eemian sediments are more common, but no definite conclusion can be drawn. Status: locally extinct Fossil occurrence: uncommon© 2019 Max DEREME
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Hey Gang, Going thru another garage box of old stuff and was wondering if you all can tell me if these 3 are all different Mitra species. Slight variability in the exterior ornamentation and spire heights and overall shell shape seem different. Maybe Mitra lineolata for the taller spired version on the very right? Spoil finds from APAC Sarasota Florida..Probably Tamiami Fm. Plio-Pleistocene. @MikeR Thanks for any help. Regards, Chris
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Hey gang, looking for some help/insight...may not be enough here to ask but I'll throw it out. So, recently there was a thread about gator/whale teeth and it made me go thru some old creek material I had and here's a little gator tooth that I referenced. I also had this 2.5 cm long fragment below in the gator stuff which I believe is wrong but maybe not. Seems to have an ovoid cross section that's about 1.4cm across and what appears to be possible vertical narrow grooves/channels (see red arrows) and a possible central core... Thanks in advance.. Regards, Chris
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Was looking at some stuff in the garage today and in the Spondylus sp. pile I had this chubby little guy. Seems to be a loner as I dont have anything else quite shaped like it...I was thinking it might be actually in Chama family but the others I have appear to be more round and this guy seems to be elongated. I cant find anything similar to it in some of the online references I looked at. Has anyone run across something similar and if its a Chama sp. know what the species is? It's got a couple of the typical clam borings and worm tubes and maybe a little Plicatula sp. attached to it as well to make it extra special. Sarasota Cnty, Florida. Plio-Pleistocene, APAC spoils, Tamiami Formation? Any help is appreciated. Thanks, Chris
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Hoping this isnt too incomplete up to ID. Was in the dugong scrap garage box but I'm pretty sure now it shouldnt have been....Anyone recognize what it actually is and what it belongs to? It has a nice twisted shape to it. The base is relatively flat and seems to be only very slightly worn. The opposite end seems to have been pretty much sheared off and has an interesting groove remaining that I've circled in red. Thanks for the looks and any info you might be able to provide. Latest thought is that its reptilian, possibly a gator, maybe an ulna? Regards, Chris
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Well I was looking at Marcos cool post about coprolites and was scrounging thru some of my Manatee Cnty boxed material and didnt find any coprolites so here's several potential whale/dolphin type frags that I'm not entirely sure about and was wondering if any of you all can confirm. I'm thinking A is a root of a maybe a dolphin tooth, B is a bulla of some sort , C is a fragment of some type of fish jaw--seems like I've seen this somewhere before? D and E appear to be anterior processes/ of dolphin periotics. I added a closeup of the end view of A and a closeup of C. I also found this little guy which is fairly well preserved and has some very distinct symmetry...seems to be a tilly of some sort. Thanks for any help. Regards, Chris
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Another partial petrosal? Whale? and a possible cervical? vert?
Plantguy posted a topic in Fossil ID
Hey Gang, Here are a couple more unknown Sarasota County finds I'm looking for some help on. Typical non-insitu items from Florida. Miocene to Plio-Pleistocene in age. 1) First unknown was split in two and separated by a foot or so but both caught my eye as being some type of petrosal and a quick rinse showed they fit together and were part of a larger specimen. ...its still pretty big (11cm at its widest point) so maybe a whale of some sort? Hoping there is enough there to say for sure. Not sure the photos really show it well. 2) Second one is a vert that has its process busted off but everything else is pretty much intact. 7.5cm wide by 5.5cm tall without the spine. Any help is much appreciated. Thanks. Regards, Chris.thumb.jpg.8b973386da648a08fc1f4ab32465db5c.jpg)
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Hey Gang, So need your opinions on this one...We find alot of nodules down here and this one has a particularly well digested lumpy look to it, more so than most. Any chance you think this might actually be a coprolite? It does have a few clam borings and along the top wrinkle you can see some irregular parallel tubes that make me wonder. All thoughts are welcome. Thanks! Regards, Chris
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Well Gang, here's the latest unknown I could use some help with. A surface find Manatee County, FL. Likely Plio-Pleistocene in age. It is good sized and just over 1 inch at its widest (2.8cm X 1.5cm) in occlusal view. Can anyone confirm it is or is not deer? Would love to hear the reasoning on how/why. Went thru some of the other Deer/llama ID posts but I'm still unsure. I'd love to have genus if either is possible if its not deer. Let me know if any other measurements/views are needed. Thanks, Chris
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Guessing this is a invert burrow of some sort. Surface find Sarasota Cnty, Florida. Unknown age/formation. Mio-Plio-Pleistocene. Interesting striations encircle the specimen that are at an angle to the overall length of the tear drop shaped specimen. Wondering if anyone knows what ichnogenus this might be and who/what created it. I've seen a few of these over the years but this is the best example I have. Thanks. Regards, Chris
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So I have these 2 incomplete shark teeth that I find really interesting and you might too as they almost look shredded/exploded. Finding perfect teeth is the goal but these hold my imagination and I only run across these kind once in awhile. So they are surface finds from Manatee Cnty, Florida. Miocene to Plio-Pleistocene in age? Neither has a root and the interior sections of the teeth are eroding and pieces of the enamel are still hanging on, especially the meg. Do you think this sort of delaminating is suggestive of just poor preservation--can any particular taphonomy/history be inferred? I've seen a couple other threads about this subject but I throw it out there for these two examples. I havent found smaller tooth shark examples doing this but I suspect they are out there and may just be not as sturdy to survive. I do have several completely small hollow examples but these seem different. All comments/speculation welcomed on these 2 teeth. Thanks. Regards, Chris
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Hey Gang, Several better preserved examples I could use your help on. Surface finds. Typical Florida, possible Miocene to Plio-Pleistocene? in age. A couple of horse teeth. Any ideas on which ones. I'll throw out Cormohipparion as a possibility. A vert. I'm guessing fish but its not very symmetrical and isnt complete. seems to be deformed in many ways. Any ideas? Lastly, I'm thinking tapir. If yes, is it possible to tell which species? Thanks for the looks and help. Regards, Chris
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Hey gang. So a couple more odd questions for you. I stopped by a dirt pile on the way home after work earlier this week and found some vertebrate bits including some turtle, horse teeth, ivory, dugong bone,etc. I found two larger flat shapes (bottom middle 2 specimens in the 1st picture) that intrigued me the most that were covered in clay so I brought them home---both I thought were large turtle shell plates. The first one I could see definitely see a grainy turtle shell texture of the larger types that I've already run across as well as the various boney layers within the shell but when cleaned up I noticed this black orbicular staining on just the one side and Im wondering if you all have seen that and know if it might be caused by something within the actual turtle shell...disease/fungus, etc or is it just a random mineral stain? The 2nd specimen I again thought was a large piece of turtle shell. Again when I cleaned it up I first noticed the textured flat side but there is a canal/vessel of some sort going thru the entire midsection of the fragment and then upon further rinsing I noticed two crescent shapes reminiscent of tooth root cavities on the top of the fragment. I went from thinking turtle shell and then seeing no laminations in the bone to wondering if it was some sacral element and now I'm wondering if those crescent shapes might indicate something crazy like a piece of sloth mandible. Someone please set me straight. Appreciate any opinions. Forgot to add scale and show the position of the canal/opening. It appears that the canal/vessel runs right between and beneath the two outer crescent shapes (the arrows in the photo indicate its location) and the top of it is very thin/narrow and has been broken/collapsed-the area which I have also circled in red. If it had not been broken in that area I think all you would see in the top view is just the two crescent shapes. Hoping there is enough detail to suggest what critter this came from. Thanks. Regards, Chris
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Hey Gang, I've had a good couple of weeks with hunting and part of the fun was running across this creek fragment. Approx 20 mm high and 70mm X 40mm wide--seems to be robust/biscuit like and rather large. Maybe I've got 20-25% of the test. Unfortunately the slice is very acute as it cut thru the specimen and may be impossible to ID lacking many important test features but I'm wondering if any of you Peace River and creek and Bone Valley folks have run across anything similar? 2nd and 3rd photos are oriented with the opening/periproct? at the bottom of the photos. Other photo angles provided to give a sense of thickness and general shape. Any feedback/thoughts are appreciated. Thanks. Regards, Chris
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More questions gang...So I picked up this specimen about a year and half ago and had set it aside and was just going thru Frank Kocsis Jr.'s Vertebrate Fossils: A Neophyte's Guide looking for turtle pictures this week. In flipping thru the photos looking for turtles pictures I saw his shot of a Rhino patella and went Oh, I think I got something similar--anyone else have these weird kinds of flashbacks?? So I found it and set it on the page next to the photo and it coincidentally has the same dimensions and general look. About 2 1/2" square and a little over 1 inch thick. So then I looked at some more carpal and tarsals bones and went well I'm definitely not sure and as I have no experience and it has it has enough dings and apparent damage along with some borings but strangely it has some apparent pores around the edges. I then looked for another photo of an anterior and posterior view of a Rhino patella and found a May 2013 thesis A New Species of Teleoceras from the Late Miocene Gray Fossil Site, with Comparisons to Other North American Hemphillian Species, East Tennessee State University and it shows a couple grooves/convexities and my specimen has a groove also. So I'm still not any smarter and hoping the photos will allow someone to say yep another unknown worn bone or maybe something identifiable...thanks all for the looks and any replies. Regards, Chris
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