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Found 22 results

  1. orthoceras, goniatite and ? ? ? ?

    Hi everyone. Picked these up yesterday in my garden. The orthoceras orthocone are familiar as is the piece of a goniatite (3rd one here so far) but am wondering what the larger piece is ? It is very smooth, and has the same color, texture and symmetry as the goniatites but is much thinner in proportion. Pictured is both sides and a longitudinal view to hopefully show the symmetry and relatively thin profile. Does it look familiar to any of you ? Thanks.
  2. I have several pieces similar to this from a drift hill near Newberry, UP, Michigan. I have been told it is Collingswood?, and found very nice pseudogygites impressions there, none whole however, just adding that for the location. At any rate, I have been trying to figure out what these orthocones are. I have several layered from various rocks which are quite small...little cone shaped impressions from 1/2 " to these. all of them are flattened, with that distinctive crush mark down the middle, where the oval part collapsed. My reason for this post, other than still being curious as to what these creatures were, is how do I preserve them...most often I have both top and bottom impressions, filled with the flattened material of the creature between them...much like a flattened trilobite. But as they dry, the animal part is beginning to flake off...is there something I can do to preserve them, other than slathering them with some kind of glue...I have used butvar b76 on some of the bones I've collected, but these seem too fragile for that kind of application. Suggestions would be greatly appreciated. (1 is the rock with layers cracked, 3 is the image from the third layer, 2 is the image from the second layer, each of these layers have orthocone images in them, ranging from about 6" down to 1.)
  3. Can someone explain a process...thanks.

    I have been watching comments about pyrite for awhile, and have shown my sample, in situ, along with two orthocones that would be nice to identify. they are from a Northern Wisconsin quarry about 15 miles due east of Green Bay. When I first started looking for fossils around my home town, I was told there weren't any because the glacier scraped away the material...since then, i have learned there are fairly large swathes of geology that do contain wonderful fossils...most often found from quarries, where the Glaciers didnt scrap deeply enough to affect them, or from areas possibly missed as in the makoqueta shale near Green Bay. At any rate, what I am interested in is the process by which the pyrite is formed. Does iron seep into the crevice for a fossil was formed, or is the iron actually from the body of the animal itself. For example, in the conesauga shale trilobites ( which are all wonderful by the way) many impressions are surrounded by a circle detail left from gasses that leached into the surrounding area...are these iron oxides from the body of the animal also...and are they therefore considered some form of fossil as well? Thanks for the knowledge, in advance. (the pyrite is about 2 inches across, the deep ridged impression about 6 inch long, and the orthocone about 18". It was my first fossil trip in the area and I had no measuring tools along. The large orthocone was in a block of about 600 pounds or it would have been coming home with me...LOL>
  4. 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:
  5. 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.
  6. 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!
  7. Prehistoric puppets and models

    I dont know if this has been posted before, but I found this on the website of the British geological survey. I realy like the orthocone model http://www.bgs.ac.uk/discoveringGeology/time/puppets/home.html also the rest of the website is also very educative and very wel made a must for starting amateur paleontologist. ( and experienced ones ) They even got a 3D geological model for Minecraft http://www.bgs.ac.uk/discoveringGeology/home.html?src=topNav
  8. Tentaculites skin pattern?

    I have recently been looking over rock hash plates from Newberry, Mich. I think the formation is Collingswood, at any rate, there are cone shaped fossils all over many of the plates I brought home, ranging from a max of 4 " to as small as 1/4 inch. I previously asked about these, and most respondants seem to suggest some kind of Tentaculites. I can see the crushed shell in most with the tell tail impression down the center indication they were once round, but I have still been tryinig to figure out if they really are tentaculites, or perhaps orthocone larva...At any rate, my point for today is, one of the plates seem to have captured the skin impression clearly. I thought at first perhaps the 4" piece I was looking at was simply covered in some kind of bryazoan, but when I looked at the others on the same plate, they all contained the pattern, and it was way too perfect , fitting the fossil's form perfectly...it looks sort of like snake skin. I would appreciate any comments... thanks. I think the forum is great, it has moved me from a very beginner who saw stones I was sure were fossils, to a beginner who can occasionally tell the difference. LOL>
  9. Found this piece of large (for the location) orthocone yesterday in a Brigantian (Mississippian) mudstone. The thin bits of surviving shell are apparently pierced through with many small round objects, mostly circular, 0.3 - 0.5 mm in diameter. Each one is now a very low cylinder (like a watch battery) with apparently vertical sides and depressed centre. Many are filled with pyrite. They have left impressions on the mudstone internal mould - the whole shell fossil is covered with them, both the living chamber and chambered phragmocone. Ostracods came to mind but these seem to go right through the shell and the spacing is quite regular so was whatever they were growing there? Orthocones and many other types of shell are common from this location but I've never seen this before. And one more:
  10. 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
  11. Hi fossils friends, here is a little taphonomic accumulation plate with many Olenekian (lower Triassic) Ammonoids. It comes from the Vikinghøgda Formation - Sassendalen group (Sassendalen valley - Spitsbergen island - Svalbard archipelago - Norway) Most of the Ammonoids are Svalbardiceras spitzbergensis (Freblod, 1930). Associated on the plate is an unidentified orthoconic Nautiloid (never seen this in the associated litterature), a bivalve and a partial Ammonoid from the Hedenstroemiidae family (at the top-left). Size of the plate is 11,5 X 9,5 cm. I prepared it with my Dremel engraver in about 8 hours.
  12. West Virginia Orthocone?

    Hi, My family co-owns some property along the Cacapon River in West Virginia, and we often find small fossil shells in great numbers along the roads and creeks. Here are a couple pictures for reference, I think they're Brachiopods? https://i.imgur.com/C3D0QUU.jpg https://i.imgur.com/dWgZ617.jpg There are tons of rocks like this in the area, most of which are brittle shale. You can find them just about anywhere, but they're most common on the banks around small creeks. The shell impression on the bottom right of the second image was the largest fossil we'd ever found there, but within a few minutes we stumbled across something similarly sized that we've never seen before. https://i.imgur.com/NbYwr9R.jpg It's about four inches long, segmented, and tapers toward the end. Up close it has a very fine texture pattern that reminded me of coral. A volunteer at our local library seems confident it's the impression from an Orthocone shell, but I wanted to be certain. Can anyone give us an ID? Thanks very much!
  13. Orthocone Identification [SOLVED]

    Found this fossil in a creek in middle Tennessee. I originally thought it was a crinoid column, until user ynot pointed out that it was more than likely an orthocone shell. Judging from where it was found, it seems to be from the Ordovician. So now my question is: what species of orthocone do you think it is? Note the size (5 1/2" long, 2" wide) and the segmented pattern. Thanks for the help!
  14. Spyroceras?

    Trying to ID this cephalopod found in Silurian limestone in northern Illinois. My guess is it's a Spyroceras? In situ pic: Part of the cast glued together: Wavy lines in aquamarine colors and some pyritization/marcasite. I am clearly missing some pieces, but when fit together in the sarcophagus, it measures over 14". The entire cephalopod probably measured at least two feet or more, I'm guessing...
  15. Estonioceras sp.

    Shell of an orthocone.
  16. Devonian Belgian cephalopods

    It has been a while since I made a decent post on this forum ( spending most of my time here in the chatroom ) But last weekend I took the courage to prep some of my recent and older finds. In my older posts you could notice that I’m particularly interested in the Paleozoic fossils of my small country, especially if I can get some cephalopods. Although they are relatively rare here, we found a few deposits wielding them, and in the quarry of Lompret a specific layer has been really productive for them. Their conservation isn’t always very good and they might be hard to spot, but this I a selection that I made and prepped. I hope you enjoy them as much as I do. https://goo.gl/photos/s1N12Vic27d49GUb9 This one had a little surprise during the prep, while clearing the goniatite I discovered a small orthocone under it. ( Manticoceras sp + orthocone: might be orthoceras or Bactrites ) https://goo.gl/photos/Ek4BYCRckhLBxNWP7 Manticoceras sp. https://goo.gl/photos/hw1LotmNF4KzxCyp6 Multiple orthocones, the largest one judging by the position of the siphuncle should be an Orthoceras sp. https://goo.gl/photos/thc9WLxVT6zWgrTC8 Manticoceras sp. https://goo.gl/photos/bS4EniPSXf1miQVEA This is one of my favorites: a double Manticoceras sp. https://goo.gl/photos/exfdSJ2X1XzFtMy78 https://goo.gl/photos/oFvCtRKuWauJtKwL8 This is probably the best one in my colection: 3 complete Manticoceras and a partial one and a Orthocone. ( that last wan came loose during the prep and was glued back in position. ) I realy like the tiny specimen in the chamber of the larger one Cheers, Kevin
  17. Fossil Collection 2015 Left Shelf Overview

    From the album Various

    Left Shelf

    © &copy Olof Moleman

  18. Endoceras proteiforme

    From the album Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Endoceras proteiforme, found in the Humber river area. Late Ordovician, Georgian Bay formation, Toronto, Ontario. Length is approximately 35 cm long with a nickel shown. This specimen is a portion of the whole fossil that is still to be excavated (it's just so difficult to dig out) and the remaining body of this thing is still there at the site where I got this.

    © (©)

  19. Endoceras From Sweden

    I dug up my Endoceras orthocone fossil from my moving boxes yesterday, and i thought that i´d show it to you guys, i´m pretty sure it´s all associated, even though it is 3 separate pieces (they were all found in a line) so here it is: The whole specimen (laid out as it would have looked complete): Close-ups of the biggest piece (Piece 1) this one is about 10 cm: Close-ups of the middle piece (this one broke while being removed from the rock), 7cm: Close-up of the smallest piece, 3 cm: /Sebastian
  20. TRIP REPORT - TULLY, NY Finds included Orthocone Cephalopods, Trilobites, Nautiloids, Devonian Assemblages We didn't have much time for fossil site visits this year so our 4th of July weekend had to be special. We decided to combine fossils and fishing which gave us 2 days at Tully NY for fossils, and 3 days at Lake Cayuga for boating/fishing and fossiling. This report covers the Tully site visit. I'll post a separate trip report for Lake Cayuga. As our friends on the Forum know, Nan and I try to set specific goals and targets for each fossil site visit and that's what we did for our 4th of July fossil and fishing vacation. Our goal for the Tully visit was to find Devonian fossils that were unique and collectible. We also wanted to find larger Devonian fossils if possible. I called and got permission in advance from the land owner to collect at our favorite Devonian site but when we got there, we were disappointed to find that our best spot had been picked clean and a lot of fossil rich rubble had been removed. Last year we found many large brachiopods, crinoids and several species of trilobites but this year there were no large specimens, only "baby fossils." Also, it was raining both days so we didn't do our customary cracking and fracking of shale which yields our best finds and this was a factor. I immediately found 1) a large well-worn nautiloid shaped fossil, and 2) a smaller nautiloid shaped impression in shale. These are not well articulated but I haven't seen a lot of large nautiloids from Tully. I also noticed some very large diameter cephalopod segments about 2 inches in diameter. Often we find these flattened in shale but these pieces were fully articulated cylinder shaped segments. This clue suggested we might find more complete specimens, so we started looking for more complete specimens. Nan was looking at a vertical face exposed by the construction work and suddenly started screaming that she found something cool. I ran over and sure enough, there was a large tube shaped fossil with segments and a smooth skin...standing upright exactly where it was preserved. In the first image below you can see the position of the tube in the formation and the relationship to the horizontal layers which suggests that this is NOT a concretion or geological anomaly, but a real fossil. The second image shows a closeup of the fossil in situ. Closer inspection shows a center stele at the tip of the top rounded segment which you can see in the image below. It took me about an hour to carefully extract the tube (Nan is better at finding fossils and I'm probably better at excavating them). Excited by the find, I kept excavating along the seam and soon discovered another fossil with the same shape, configuration and positioning. Later, I found another partial specimen about 300 yards away - ironically, at the same place we thought was devoid of fossils. All 3 fossils were the same relative size, shape and positioned vertically in the formation. As I excavated the fossils from the formation, I kept thinking about RomanK who has found tree and plant fossils embedded vertically and I was "channeling Roman" as I removed these finds. As it turns out, these were not orthocones, but turned out to be Devonian tree fossils (Wattieza). I started a separate thread in the Fossil ID section.
  21. UPDATE: August 20, 2013 - A new site for Wattieza - the world's oldest known tree Since posting this, the debate about "orthocone" versus "Devonian tree" has been settled. The Devonian tree experts have weighed in and confirm that these are Devonian tree shoots. They were growing in a swampy shallow marine environment similar to how modern mangroves grow. Since our original discovery - which represents an entirely and previously unknown site for Devonian Wattieza trees - my wife and I have collected more than a dozen separate fossils including some with surrounding substrate, from this site. I have cleaned most of the specimens and am taking closeup photos from all perspectives, now, to show such things as the central tube (called a stele) that runs through the core and the texture of the outer covering. In addition to Wattieza we have also discovered a separate Devonian plant species which we are attempting to evaluate and identify. Here is a photo from our SECOND site visit that shows the actual small Wattieza stump fossil that we collected, placed in front of a photo of the same fossil in the substrate as we found it. You can also see the adjacent "stick" which we currently believe is NOT part of the Wattieza stump - a separate closeup of the stick is included. We are currently looking at our several "stick" fossils and planning to cut one to look at the cross-section pattern, to try to determine the plant species. We feel that these finds have the potential to add new information about Devonian trees and plants, from this new site. It is also significant that we found these in a Devonian site where there are normally only marine fossils so we appear to have found a rare "island" of ideal conditions where young mangal Wattieza trees were growing in a paleosol where the conditions allowed fossilization. Geologically, these fossils are at the lower end of the "Tully limestone" formation. Our Devonian tree/plant finds confirm our thinking as "advanced amateur" paleontologists that as amateur fossil hunters we all can and should be using our time and knowledge to discover new sites and add to the fossil record. The small "army" of fossil hunters represented on The Fossil Forum have a unique opportunity to look in places where scientists may not have an opportunity - or inclination - to search. Once in awhile we discover something important, which seems to be the case here. OUR ORIGINAL POST Before I write our 4th of July trip report, I asked for some ID help with 3 tube shaped fossils we discovered at Tully, NY (Devonian, Hamilton Group) - the first opinion I received is that these are orthocone cephalopods. A contrary view is that these are Devonian trees! I modified the description slightly from the original post to reflect the current debate which has made this a "hot" topic. Have to admit, it's kind of cool that our first major fossil trip this year has sparked such an interesting discussion! Nan and I found these in situ sitting vertically in the substrate of a new construction site. I had found a few very large (2 inch diameter) cylinder shaped segments in the rubble that looked like cephalopod pieces and they were the largest we have seen to-date, so we were intrigued and started pulling away the substrate in the vertical walls exposed by the bulldozer. The first two fossils were found about a meter apart and the third was found about 300 meters away over a hill, but in the same level strata and depth. I'll do some minor cleaning, take better pix of the recovered fossils and segments, and add them soon - there appears to be a siphuncle structure running through the center, and other clues to the identity. Here is a quick view of how and where they were found - of course we realize it's very rare to find this type of fossil vertically embedded in the substrate. Nan found the first one, I found the next two and excavated all three - will provide more photos soon but hoped to get an ID first. The third sample had about 2/3 with the bottom portion missing. The first two appear to spread out slightly at the bottom. Several people suggested these could be trees and a few said other creatures but most people I talked to before posting this seem to agree they are orthocone cephalods. Aside from their size and shape (which is unusually large for the Tully shale so these are rare especially found in situ) - the primary convincing evidence is the siphon (siphuncle) protruding from the tip of the top of one of the specimens. This structure runs like a worm through the center - the other segments show holes in the center where the "wormlike body" ran through it. This argues against trees or other creatures but a few people claim that Devonian trees did have a similar center structure. The most confusing aspect is the lack of hard shell which should be present if this were a cephalopod - so what does that suggest? Another type of creature? Did they moult their shells and is this the "soft shelled" phase? Or is this a tree? Here is the top segment from the best specimen which clearly shows the siphuncle protruding at the center. In addition to the segmented tube shaped structures (they are all about the same diameter and length) there appear to be tentacle shaped structures on the left side although I didn't recover those when I extracted the tubes. Of course if this is a tree, then it is possible that those structures could be shoots. The tentacles or shoots were not recovered and are only shown in the photo which unfortunately limits the analysis. Here is how the debate seems to be shaping up: Pro Orthocone Cephalopod - These 3 specimens were found in what appears to be a Devonian marine environment where all of the fossils found there have been marine fossils. They have a small center "worm like" structure running through the center that looks like a siphuncle (siphon). They are all segmented and all the same approximate length and diameter. One was partially collapsed and distorted (some segments bulging outward). No one has suggested a cephalopod species that this might represent. Pro Devonian Tree - The horizontal strata where they were found contained very few if any marine fossils so they could be small young trees growing in the water. There is no trace of any shell fragments which is unusual if this is a cephalopod and the segments don't resemble cephalopod shells. There is a thin outer "skin" which could be consistent with ancient horsetail type bark. In the cross section of the segments, there are no concentric circles - in early trees there was pith, not traditional wood with concentric growth circles and some people have indicated that the first Devonian trees did have a similar center structure. The center core that looks like a siphuncle would be a core structure called a stele. Piranha suggests that this could be Wattieza sp., a prehistoric cladoxylopsid tree from the Middle Devonian that was discovered in Gilboa, New York which would be consistent with the location which was the Hamilton Group near Tully, NY. This genus has been called the earliest known trees. One of our goals for this fossil trip was to find something larger and distinctive/unusual and apparently we've done that. Another goal we've had since last year was to find a Devonian plant of some sort and it would be cool if that's what this turns out to be. I'll be just as happy if these are orthocones. The debate is hot on the ID for these and with all the attention and help from everyone, we should zone in soon. I'll take some more closeup photos this week and post them here. These are some of the largest fossils Nan and I have found so far and certainly the largest we have found in situ - it's fascinating that we found these exactly where they died and were preserved, 385 mya. I have to admit I felt like RomanK, who finds a lot of stunning in situ fossils and I have to admit, I was consciously trying to think like Roman and inspired by his example while searching for these fossils, which involved a lot of "excavation." UPDATE: NEW PHOTOS/CLOSEUPS At the end of this blog (page 3 and 4) I posted some new closeup images.
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