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Found 74 results

  1. Nautiloid Cephalopod?

    Found in a creek East Fork Lake in Cincinnati. 14 centimeters in length. It looked to me like a nautiloid because of its shape but it doesn't have any of the distinctive markings like a nautiloid does. Someone suggested that it could be a cast. You can see the imprint of the rest of the fossil. What it looks like now after I broke the rest of the rock apart Opening of the cone shape, looks like a brachiopod? Nautiloid Cephalopod markings I'm talking about:
  2. Total Mystery

    This one is a mystery. My local rock shop owner got this in a collection he recently purchased. Any ideas?
  3. Hello everyone, especially those to whom I have sent chunks of Georgian Bay Formation (Upper Ordovician) orthoconic nautiloids! @JohnBrewer @minnbuckeye @WhodamanHD @VTinNorthAB @Kasia @cheney416 @David in Japan @thelivingdead531 @Tidgy's Dad @Ludwigia @joshuajbelanger Eric, I don't think I sent you any, but just in case... @Wrangellian @DLB - I don't think I sent you any, either, but - again - just in case... (By the way - do you need/want any more fossils for your boys?) I think I've been spelling the name of the orthoconic nautiloid incorrectly!!! I've been spelling it as Treptoceras crebiseptum BUT I've been omitting the "r" that's supposed to come after the "b" in the species name SO the correct spelling should be Treptoceras crebriseptum. I'm SO sorry for the error - I hope you can all forgive me Thanks, Monica
  4. Just got back from a trip to New York. Started off at Penn Dixie in the mid-Devonian, then to the Hamilton group, and ended in the mid-Ordovician Trenton group in the Mohawk valley. My main goals were to find some nice complete trilobite specimens, especially the Dipleura dekayi. Special thanks to @Darktooth for hunting advice at DSR. Here are some of my finds: Eldergeops rana, from Penn Dixie. cephalon is a little dinged up but I kind of like the imperfection. Partial Dipleura cephalon found loose in talus at DSR Here's another one found by splitting the shales. It had been raining hard for about two days and stopped when I arrived early morning. After prep: Greenops boothi in situ After prep: Another Greenops, positive negative from CHR. Had to glue it back together, broke when split, but it still looks good to me. Grammysia bisculata, a nice bivalve A surprise enrolled juvenile Dipleura dekayi, mostly complete , just missing an eye And last , but not least, some Ordovician fossils found in the Mohawk valley region. Hindia parva (I think?) sponge Straight shelled nautiloid, measures about 5 inches across Triarthrus parts Thanks for looking!
  5. Montague New Jersey Devonian

    I recently took a break from my usual Cretaceous streams and met up with another forum member in Montague NJ for some Devonian fossils. I had a really good time and came back with some nice fossils. First of all, the scenery is amazing - Montague is up in the mountains of Northern New Jersey and this spot was basically on a mountain. I saw deer and wild turkeys and also heard that there were bears in the area too. I found the usual trilobite parts but my favorite find of the day were the nautiloids (Weller has them as Orthoceras but I believe that species was reclassified - I could be wrong), which both came out of the same rock. I had no idea coming in that you could find these guys here! Overall, it was a great day at a nice nice spot!
  6. ADAM's SILURIAN

    Hoooooooooooorrrrrrrrrrrraaaaaaayyyyyyyyyyy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here we are at last, into Adam's Silurian. Thanks for looking. First up is the Lower Silurian or Llandovery and I begin with a problem. I posted this one incorrectly in Adam's Ordovician as it had got it's label muddled up with an Ordovician Favosites I had that has vanished in the move here, but is being replaced by kind forum member @Herb Anyway, this, I remember now I've found the correct label, is from the greenish Browgill Formation, part of the Stockdale Group from a cutting near Skelgill (Skelghyll) in Cumbria, Northern England. It seems to be a tabulate coral, but I can't find any listed for this location, only mentions of small, rare, rugose corals. It has the star shaped corallites of a Heliolitidid, but seems to be tightly packed together like a Favositidid. A couple of species of Palaeofavosites seem to be close and are a bit star-shaped,, but anyone know any better? @TqB@piranha hmm who else? The coral bit, an external mold, is a maximum of 3.5 cm across and each corallite up to 2 mm.
  7. Nautiloid Cephalopod?

    Is this a fragment of a nautiloid cephalopod? It is quite large. Found in a limestone quarry. Thanks!
  8. Orthocone nautiloids

    I should preface this post by saying that the Paleozoic, marine ecosystems, and invertebrates are not generally my primary expertise, so I apologize if I am wildly off base or asking stupid questions. Sadly, I did not find these specimens myself, and so I do not have any particularly useful information on age or location. They were left in a desk drawer along with a collection of other invertebrate fossils, most (if not all) of which are Paleozoic in age. I have several different specimens of orthocone nautiloids, and I would love to know if anyone can refine that identification further. To make the situation more difficult, the siphuncle is only preserved in one of the specimens so far as I can tell (first set of photos below). For this specimen, the diameter of the nautiloid is ~3.5 cm (depending on exactly where it is measured), the inner diameter visible on top and the diameter of the siphuncle on the bottom are 4 mm, and the outer diameter is 8 mm. Here are the pictures. Thank you in advance for your time and input. Specimen #1: Specimen #2:
  9. Kummelonautilus?

    While on an adventure with @Pilobolus, exploring the Dakota Sandstone and underlying shales, I found something very exciting*... ...my first coiled Nautiloid! Coiled Nautiloid Upper Cretaceous (Cenomanian) Paguate Member of the Dakota Formation Sandoval County, New Mexico Now, after a bit of research, I write here to lean on this Forum for assistance with identification. I find that this specimen sits well in the genus Kummelonautilus...what say you? Many thanks for your help, -P. *Bryan can attest to my yelling and jumping around. @FossilDAWG
  10. score-thocone nautiloid

    While at the ABQ Gem and Mineral show on Sunday, I spotted this cool little Nautiloid... ...I could not help myself. The information: Does anyone recognize the matrix/fossils and perhaps some guidance on literature? Thanks for your help.
  11. Giant Nautiloid!

    Hi guys/gals, found this huge Nautilus this Saturday, still unprepped and I'm still in a bit of shock, once prepped I think it will be unreal... thanks, Alan.
  12. Something maybe new to folks

    Here's a new fossil shape I just learned that maybe others will find interesting or useful. This muffin is a broken segment of the "annulosiphonate deposits' from a Carboniferous nautiloid. I can certainly say this would've completely stumped me had I found one of these before learning this!
  13. Nautiloid or trilobite?

    I'm posting this per the suggestion of @Fossildude19 initially I pegged this as a trilobite, until I saw @electricshaman's nautiloid get identified earlier today. Now I'm not sure. Thoughts?
  14. Nautiloid? Mahantango

    My first guess is straight nautiloid. What do you all think?
  15. Okay, help me out here. Somebody posted the following images on the Fossil Forum Facebook group. Not the best pictures in the world, however, the ribbing, keel and overall appearance make it clear that this is an ammonite. However, somebody on the group, claiming to be a highly qualified expert, says that this is in fact a nautiloid, pointing to 'the sutures' as proof. I don't see any sutures, but he says that the ribs are 'external expressions of septa'. Now. I have been wrong before. But, unless I'm slowly succumbing to madness, this is an ammonite. As clear as day. This highly learned man tells me that I am uneducated and don't know what I'm talking about. He is presumably just trolling, but I'm never one to back down from an argument under any circumstances, so I would welcome a second opinion. At the very least, I can pop off down the doctors for a referral to a suitable brain hospital, if it turns out that I've started to confuse different types of cephalopod.
  16. Nautiloid - Vic de Chassenay

    From the album Best of 2017 finds - a year in review

    A nautiloid from Vic de Chassenay - Burgondy - France - sinemurian - collected in autum 2017
  17. Nautiloid - Nanteuil

    From the album Best of 2017 finds - a year in review

    A Nautiloid from Nanteui - Deux Sèvres - France - Bajocian - collected in september 2017
  18. Cephalopod Shell Color!

    Hello all! Recently I have been obsessed with cephalopods and realized there is a real lack of reconstructions of the color patterns on extinct nautiloids and ammonites! This led me to compile a list of known fossil color patterns on cephalopods. After a year of on and off research, I found about 90 species of cephalopods retaining official or undescribed, original patterning on their shells. These are the first 15 species on my list. The color markings are based both on descriptions and photographs of the fossil material. The shades of the markings are based on the fossils, but also inferred. I Hope you will appreciate my work!
  19. Sliced and polished nautiloids

    More from the Etobicoke creek in Mississauga. Ive been slicing and polishing some worn down nautiloid fragments and they look pretty cool.
  20. Etobicoke creek finds

    Here are a few pieces I've found in the Etobicoke creek, Mississauga, Ontario. Nautiloids Crinoid fragments Unknown Unknown
  21. Silurian Orthoconic Nautiloid

    Hello, This appears to be an internal mold/cast of an orthoconic nautiloid, and therefore I am not sure if there is sufficient detail to get an ID. This is from the Niagaran Series, Burnt Bluff Group, Hendricks Dolimite (Fiborn Member) Formation (middle Silurian) of Schoolcraft County, Michigan (Upper Peninsula). Looking for more info on possible identity from those familiar with the Silurian orthocones from this area. @FossilDAWG? Cross section
  22. Tainoceras sp.

    From the album Collection

    © fruitoftheZOOM

  23. Tainoceras

    From the album Collection

    © fruitoftheZOOM

  24. upper ordovician orthocone nautiloid?

    Hi, I found this fossil a few years ago on the shoreline of lake ontario right in the city of Kingston Ontario. I believe the exposures here are upper Ordovician age limestone (Gull River formation) however there may have been fill brought in from elsewhere to stabilize the shoreline so this fossil may not be exactly local. It looks to have a siphuncle (acentral) and sutures (relatively close together) so I thought it appeared to be some type of orthocone nautiloid of some type. Based on Bill Hessin's field guide "South Central Ontario Fossils" I thought i might be Gonioceras anceps or Actinoceras but I really don't know. The pics here are not great, but hopefully someone has some ideas. Thanks
  25. Hi fossils friends, Here are some of my last preparations : Lower Triassic Flemingites lidacensis (Welter 1922) - 19 cm
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