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Showing results for tags 'nautiloid'.
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Real reminiscent of siphuncle?
JulianoLPD posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hy guys, So I got this nautiloid in a wholesale and when I got home I realized this kind of small "hole" in the inner part of the shell. My doubt is if this is reminiscent of the siphuncle or it was made by someone. What do you think?
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Was given to me as a gift. Not sure where from.
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I was given this as a gift as a child. I gave the other half to a friend some time ago. Here Are the Pictures my dudes:
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Here is another I found at Lost Creek in Jacksboro, TX, Looking for ID help.
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Found this first one in Jacksboro, TX, Lost Creek Dam. Finis Shale Formation, Pennsylvanian. Would like to identify. Gastrioceras? or maybe Vidrioceras?
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Hello everyone! I've been examining a fossil I found a short while back and wanted to try and confirm my suspicions that it is a Orthoconic Nautiloid. Interested to hear some opinions from those more knowledgeable than I. So far I've been struggling to find good resources describing the different species found in this formation, it seems the work of John Laurie should possibly be my focus. The diameter of the possible siphuncle seems unusually large and positioned in very close proximity to the outer shell. I seem to remember reading something about the siphuncle moving closer to the outer shell as the nautiloid ages. The fossil was found in Maloney Creek, NT, Australia and comes from the Horn Valley Siltstone, early to middle Ordovician (487 Ma - 468 Ma). Feel free to ask for any additional photo angles, measurements or further information on the location. I also have a number of specimens from the same location that are clearly straight-shelled nautiloids, but likely another species.
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Hey guys, I am fairly certain that this is a straight-shelled nautiloid cephlapod but this one is different from others I find. I find a lot of fragments from cephlapods in Cincinnati with only a few segments. This one seems like the whole shell, though it is 7.5 centimeters in length. Also one side has a bunch of holes which I am curious about. Any more info on this specimen would be much appreciated. Found in a creek so it has probably been weathered a lot. These next pictures are the top and bottom, (i dont know why they are flipped to the left)
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Found two interesting cephalapods on the Blanco River in Central Texas. I have never found nautiloids in my area, but I looked up as much info as I could find, but only two are found in Cretaceous. So I am thinking this is a Cymatoceras? Perhaps Cimomia Angustus? That was one I found online that looked a bit like this one. Any help of ID would be appreciated. The little grey imbedded ammonite is also unusual to me since it is so small, most of what I have found are much much larger.
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Hello, we are new to this forum so hope we posted this in the correct place. We found the fossil in the photo below in the East Fork of the Little Miami River in Claremont county Ohio. It was just laying there complete In clay in shallow water. It is about 2 feet in length. The underside (not shown) has remnants of what appear to be feet. To help it crawl. We are not sure what it is, anything about it, or if the size of it is common or extraordinary in length. Any information you can offer would be most appreciated Thanks in advance, Linda&Tim in Cincinnati Ohio
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I only recently got into collecting after being out hiking and literally tripping over a large coral fossil a couple years ago and the hunt has been on since! SO much to learn! I wish I'd have started 30 or 40 years ago. I haven't posted any of my finds as I've been trying learn a little first and see if I could identify some of these. I think I've got some of them and others I haven't found a name for, so I hope you don't mind me dumping several on you. Are all these Receptaculites Oweni? They were found in the Galena dolomite in the Dubuque area in what I think is the Fairplay member of the Dunleith. (30 or 40 feet above river level) The third photo of the slightly smaller one was found in a drainage ravine so I can't be sure the layer it came from, but I don't believe it had been carried very far if at all. It was 30 or 40 feet higher than the other two. Is the last one Ischadites Iowensis or another Oweni? Is there a good guide to these somewhere? These next are of a nautiloid I haven't found the name for. This was found in the Guttenburg member of the Decorah also in the Dubuque area near river level. It was in the outcrop about a foot above the top of what I think is the Spechts Ferry member. I also found quite a few Rafinesquina brachiopods laying around in the talus and the pygidiums of a couple different trilobite. I think one is Gabricerarus Mifflenensis and the other Isotelus? It looks a lot like the ones in the last photos of what I'm pretty sure are some Isotelus Iowensis I found near Elgin, IA). Are these Isotelus Iowensis? These were found near Elgin, IA in what I think is the Elgin member of the Maquoketa. About a foot above the Turkey river that day. You can actually make out what I assume are compound eyes? Being kind of new to this I'm amazed at the detail you can still see in some of these for something so old. I haven't found the name of these cephalopods yet either. They were found the same day and not far from the trilobites in Elgin and about 5 or 6 feet higher in the rock layer.
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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:
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This one is a mystery. My local rock shop owner got this in a collection he recently purchased. Any ideas?
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correction for name of nautiloid from the Georgian Bay Formation
Monica posted a topic in General Fossil Discussion
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- 12 replies
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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!
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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!
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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.
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Is this a fragment of a nautiloid cephalopod? It is quite large. Found in a limestone quarry. Thanks!
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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:
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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
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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.
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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.
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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!
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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?
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My first guess is straight nautiloid. What do you all think?
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