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Showing results for tags 'cephalopod'.
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Here are three views of a 9 mm "Peritrochia sp." Girty 1909. It was found at the Lost Creek Lake spillway in Jacksboro. This proves that even a broken, partial fossil is worth taking home. In the first position you see the elaborate suture pattern characteristic of these Goniatites on the outermost whorl preserved. Notice the slight horizontal groove near the bottom edge. As it turns to reveal the next whorl below you can see the siphuncle as a vertical line and the outer edge of a septum, or chamber wall, at the bottom. Turning into the innermost whorl the septum comes into view at the top and the siphuncle is visible again. Here you also see another shallow groove crossing horizontally. These "constrictions" are found on some Pennsylvanian Goniatites. Peritrochia.mp4
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From the album: Delaware Fossils
Late Cretaceous Eutrephoceras dekayi from the C and D Canal in Delaware-
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From the album: Prae's Collection (REMPC)
REMPC-C0036 Aioloceras besairiei Cretaceous, Albian Boeny Region, Southwest of Mahajunga, Madagascar-
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I have been working with Mississippian age nautiloids in Kentucky for the past 40 years. Years ago I found two very complete specimens in the Nancy Member of the Borden Formation in a creek east of Morehead, Kentucky. The one was a small but very complete Orthoconic nautiloid of the genus Michelinoceras sp. which is commonly found in that area. The other was found very close to the other and at the time I thought it was another Michelinoceras sp. Recently I was looking at it and saw the shape was much different. Michelinoceras is very conical and the shape is very round to slightly oval with the Siphuncle in the center. The unknown specimen is also orthoconic and shows the living chamber and upper shell is just lightly oval similar to Michelinoceras sp. but the end of the shell thins on the sides to the shape of a Baculite shape. The specimen is highly replaced with calcite and the siphuncle is hard too determine. What may be the siphuncle is located at the upper part of what I think is the venter. If I am correct it would be a Bactritida type of nautiloid that were common in the Devonian. I have researched the treatise as well as many papers on Mississippian age cephalopods I can find. I am hoping someone may have ran across a similar specimen. The first and second picture is of the Michelinoceras sp. specimen. Approx. 4 inches long and typical Michelinoceras specimens. The rest of the picture are of the unknown specimen, the red circle is the area where I believe the siphuncle is located.
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From the album: C&D Canal Micro Fossils
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I found these photos in marbles coming from the North West of the Red Sea. Can any one help me in identifying them?? They sometimes look like Orthocone, but I´m not so sure! Many thanks in advance!
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Unidentified Orthocone Nautiloid with Reptaria stolonifera colony.
Fossildude19 posted a gallery image in Member Collections
From the album: Fossildude's Middle Devonian Fossils
Middle Devonian Mahantango Formation. Swopes Farm/Turbotsville borrow pit. Turbotsville, PA.© 2021 Tim Jones
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This is rather alien to me compared to what I usually find as far fossils, esp in this creek which is mix of Eagle Ford and little bit of everything. Thinking it has to be part of an ammonite but can't visualize it since this is straight and flat. Don't usually see any internal structure so just guessing that's what this is. The colors are awesome, is it nacre or opalized?
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From the album: Lime Creek Devonian Rockford Iowa
The one on the right is positive identify as Gomphoceras floydensis. Rare. Middle is more of a single segment and the right one is a different species, currently unidentified. Seem like cephalopods from Rockford Iowa are on the small side and low diversity of species. Hadn't found one trilobite at all so far sigh. -
Hello guys! Today I visited antother place between Montreal/ Laval, on the North shore of Montreal. Spectacular place, many fossils. But the mostly found is a nautiloid/ cephalopod. I've seen such speciments already, however on this place there were so many of them, can't compare it with other places that I visited. In addition, other specimens before were spread out of their original position. Here I have all in one place, the original place . all specimens #1, #2 , #3 N3 #4
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I dug these two cephalopods a couple months apart at the same place within the Cretaceous of North Texas and did not know if they were an ammonite or nautilus species. I do think they are part of the same genus though. After more research I thought it could be an oxytropidoceras species. Still not sure what genus or species it is but I'm leaning towards a type of ammonite. The place I found these ammonites at, usually has Mariella ammonites and no other type of ammonite. But these two are the only ammonites from the area I've seen besides Mariella species. Any help would be appreciated.
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From the album: C&D Canal Micro Fossils
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From the album: C&D Canal Micro Fossils
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From the album: C&D Canal Micro Fossils
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From the album: C&D Canal Micro Fossils
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I think this is a piece of a cephalopod fossil. It was found in northern Manitoba where the Saskatchewan river runs into lake Lake Winnipeg. Can anyone confirm?
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Having recently retired, I'm finally going back to try to catalog some of the specimens I've collected over the years, but have so far not been able to identify. The subject specimen was one collected (to the best of my recollection) back in the 1990's while walking on exposed river bed along the north shore of the St. Lawrence River just south of Quebec City. The specimen is a little over 30 mm long and weighs 30 grams. The distinctive features are the rounded end, flap-like feature folded on the end, and circumferential rings. Below are photos with several views, with the oblique view showing the geometry/features best. I've been thinking this is some kind of cephalopod. Does this look familiar to anyone? Thanks.
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Tiny creature (not yet named) had a siphuncle 522 million years ago. Ancestor of all those other cephalopods? https://www.livescience.com/ancient-octopus-relative-fossil.html
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I found this ammonite chunk a few days ago in my backyard, and I was wandering what species it is. There are some fossil snail imprints and some other small fossil imprints on this ammonite chunk. There is also a swirl or some kind of shape on the side of the ammonite if anyone can identify that.
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Hi everyone. I am new to the group and would like to ask for some help in identifying this fossil. To my eyes it looks like a cephalopod but never seen one this big. Can some one help? I found it along Etobicoke creek. Any help would be much appreciated .
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Cephalopod fossils in matrix found in Sumner county Tennessee.
Robert Mahorney posted a topic in Fossil ID
Can anyone identify? Spyroceras maybe?
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I am having trouble putting a label on this cephalopod from the Upper Pennsylvanian, Graham formation, Finis Shale member, from Jacksboro Texas. The conch is crushed on the anterior end which distorts the apical angle but the intact posterior end shows an angle of around 12º and the cardinal ratio is about 2. My first thought was bactrites but if that is the siphuncle it appears to be very near but not quite in contact with the ventral wall, which I thought was a requirement for the whole subclass. It looks a little like the “doubtful” genus Cylobactrites with the foldlike ribs and missing ventral lobe, but the treatise shows those to be Mid-Denonian. Maybe the ribs could be described as annulations and the siphuncle as subventral making it a nautiloid like some Brchycycloceratidae but B. normale and B. curtum are all I see on the fauna list for the site and they have much large apical angles at around 22º and 40º. Any ideas?
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Found this in same creek by DFW airport, Eagle Ford/Alluvium mix. So has basic shape of an ammonite but really thrown off by strange pattern, not typical wear and each side so different. Just don't know what to make of it.
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Does anyone have any idea what time period this nautiloid comes from or maybe its genus?
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Looking for help identifying and prepping a cephalopod fossil.
Neurodynamic posted a topic in Fossil ID
Hello, I am an amateur fossil hunter whos level of knowledge is pretty limited. I love going out and hunting but my ability to identify and prep what I find is quite limited. I found this cephalopod fossil near Cincinnati Ohio a couple of years ago and it is by far my best find ever. I'm typically fine picking at or grinding away with a Dremel trying to prep my finds as they are usually small bits. Nothing I'm worried about ruining. This is something different and I'm pretty apprehensive about working on it. I read there isn't much harm in gluing it back together and I attempter this. It looks ok but 2 pieces didn't take so it's still in 2 pieces. There are also many very thin pieces of shell that came off the back when I dug it out. There also appears to be a small trilobite in the underside of the rock. What I would like to know is more information on the species it is, as well as if there is a person or place I can send it to get prepped. For identification purposes here is what I know. The area it was found in Cincinnati Ohio in a bed known for Cambrian era fossils. Estimated age is 450-500 million years. I am not a rich man so I cannot afford to spend too much on prep but it is the best fossil I've found so far. I would be willing to spend as much as my budget allows on getting it cleaned up and put back together. I do not know what to expect price wise so if anyone has a guestimate please let me know. Thanks ahead of time to anyone that can help me out.
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