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  1. Samurai

    Metacoceras sp.

    From the album: Missouri Ammonoids, Nautiloids and Gastropods

    Found this beautiful specimen the other day while searching in the rock pile attributed to the Iola Formation. More specifically, this one was most likely found in the Paola limestone member.
  2. Jeffrey P

    Bactrites from Hungry Hollow, Ontario

    From the album: Middle Devonian

    Bactrites arkonensis Straight-shelled Cephalopods Middle Devonian Arkona Shale Hungry Hollow (South Pit) Arkona, Ontario
  3. The Permian-Triassic Extinction Event of 252 Million Years ago was one of Earth’s largest mass extinction events, wiping out around 75% of all terrestrial genera and 95% of all oceanic genera. Cephalopods (represented at the time mostly by ammonites and the still extant Nautilidae) were especially hit hard, with around 97% of all ammonite genera becoming extinct by the start of the Triassic. But those genera that survived the event formed the basis for a major radiation in cephalopod diversity. Ammonites (particularly those of the order Ceratitida) experienced an era of rapid diversification during the Triassic. Cephalopods continued to diversify in the later stages of the Mesozoic and Cenozoic eras. Here’s a list of all currently known cephalopod genera and families that survived the Permian-Triassic Extinction Event. If I forgot any examples, please let me know and I’ll add the examples to the list promptly. Ammonoidea Prolecanitida Episageceras (Prolecanitid) (Late Permian-Early Triassic, 254.0-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13964 https://onlinelibrary.wiley.com/doi/full/10.1111/j.1475-4983.2007.00653.x Ceratitida Xenodiscus (Ceratite) (Late Permian-Early Triassic, 268.0-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=14458 https://onlinelibrary.wiley.com/doi/full/10.1111/j.1475-4983.2007.00653.x https://www.pnas.org/doi/pdf/10.1073/pnas.0907992106 Otoceras (Ceratite) (Late Permian-Early Triassic, 252.3-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=14276 https://onlinelibrary.wiley.com/doi/full/10.1111/j.1475-4983.2007.00653.x https://eprints.whiterose.ac.uk/476/1/wignallpb2.pdf Ophiceras (Ceratite) (Late Permian-Early Triassic, 254.0-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=14272 https://kuscholarworks.ku.edu/handle/1808/3896 https://www.zora.uzh.ch/id/eprint/136979/1/1-s2.0-S1871174X17300434-main-1.pdf Tompophiceras (Ceratite) (Late Permian-Early Triassic, 252.3-251.3 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=14429 https://www.app.pan.pl/archive/published/app58/app20110054.pdf Anderssoniceratidae http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=86838 Prionolobus (Ceratite) (Late Permian-Early Triassic, 252.3-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=82362 https://www.researchgate.net/publication/277925393_First_occurrence_of_temnospondyls_from_the_Permian_and_Triassic_of_Turkey_Paleoenvironmental_and_paleobiogeographic_implications https://www.zora.uzh.ch/id/eprint/136979/1/1-s2.0-S1871174X17300434-main-1.pdf Paratirolites (Ceratite) (Late Permian-Early Triassic, 254.0-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=14312 https://www.researchgate.net/publication/272149073_Importance_of_Carbon_Isotopic_Data_of_the_Permian-Triassic_Boundary_Layers_in_the_Verkhoyansk_Region_for_the_Global_Correlation_of_the_Basal_Triassic_Layer https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1475-4983.2007.00653.x Hypophiceras (Ceratite) (Late Permian-Early Triassic, 252.3-251.3 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=82367 https://www.researchgate.net/publication/272149073_Importance_of_Carbon_Isotopic_Data_of_the_Permian-Triassic_Boundary_Layers_in_the_Verkhoyansk_Region_for_the_Global_Correlation_of_the_Basal_Triassic_Layer https://www.researchgate.net/publication/361222295_Biotic_Response_to_Rapid_Environmental_Changes_During_the_Permian-Triassic_Mass_Extinction Metophiceras (Ceratite) (Late Permian-Early Triassic, 252.3-251.3 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=93264 https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1475-4983.2007.00653.x https://www.sciencedirect.com/science/article/abs/pii/S0921818118301322 Orthocerida https://sjpp.springeropen.com/articles/10.1007/s13358-019-00188-2 Belemnoidea Xiphoteuthididae http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=265569 https://onlinelibrary.wiley.com/doi/full/10.1111/pala.12070 Nautilida Liroceratidae Paranautilus (Liroceratid) (Late Permian-Early Triassic, 259-205 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13256 https://www.cnidaria.nat.uni-erlangen.de/tersane/tersane-papers/Korn&Gliwa_2019_The morphospace of Late Permian coiled nautiloids.pdf https://www.researchgate.net/publication/327721272_Aly_MF_2001_Middle_Triassic_Cephalopods_from_the_Musandam_Peninsula_Northern_Oman_Mountains_United_Arab_Emirates_Geo_Soc_Egypt_45_1B_463-479 Tainoceratidae Aulametacoceras (Tainoceratid) (Middle Permian-Early Triassic, 272-242 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13151 https://pubs.usgs.gov/pp/1207/report.pdf Germanonautilus (Tainoceratid) (Late Permian-Late Triassic, 254-201 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13201 https://core.ac.uk/download/pdf/39311692.pdf https://www.researchgate.net/publication/327721272_Aly_MF_2001_Middle_Triassic_Cephalopods_from_the_Musandam_Peninsula_Northern_Oman_Mountains_United_Arab_Emirates_Geo_Soc_Egypt_45_1B_463-479 Holconautilus (Tainoceratid) (Late Permian-Late Triassic, 265-232 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13216 https://www.cnidaria.nat.uni-erlangen.de/tersane/tersane-papers/Korn&Gliwa_2019_The morphospace of Late Permian coiled nautiloids.pdf https://sjpp.springeropen.com/articles/10.1186/s13358-022-00263-1 Pleuronautilus (Tainoceratid) (Late Carboniferous-Late Triassic, 298-205 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13270 https://core.ac.uk/download/pdf/39311692.pdf https://www.researchgate.net/publication/336065301_A_Changhsingian_late_Permian_nautiloid_assemblage_from_Gujiao_South_China Tainionautilus (Tainoceratid) (Late Permian-Early Triassic, 254.0-247.2 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13314 https://www.researchgate.net/publication/336065301_A_Changhsingian_late_Permian_nautiloid_assemblage_from_Gujiao_South_China https://www.pim.uzh.ch/apps/cms/_downloads/bruehwiler_2012_ammonoids_salt_range.pdf Grypoceratidae https://pubs.usgs.gov/pp/1207/report.pdf Syringonautilidae Syringonautilus (Syringonautilid) (Late Permian-Late Triassic, 254-232 Million Years ago) http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=13311 https://core.ac.uk/download/pdf/39311692.pdf https://www.researchgate.net/publication/292364105_Triassic_ammonoid_succession_in_South_Primorye_1_Lower_Olenekian_Hedenstroemia_bosphorensis_and_Anasibirites_nevolini_Zones I hope you all find this helpful?
  4. I've been researching good fossil sites near/at Milwaukee, Wisconsin (primarily from the Milwaukee Formation (dating to the Middle Devonian (Givetian)) when I just found out the most of the Devonian fish fossils that have been found from that formation have been found from a particularly member strata - the Berthelet Formation. Gass, Kenneth & Kluessendorf, Joanne & Mikulic, Donald & Brett, Carlton. (2019). Fossils of the Milwaukee Formation: A Diverse Middle Devonian Biota from Wisconsin, USA. I'm aware that time has seen the Milwaukee formation largely buried, after the cement quarries that dug into the formation and helped fuel the fossil discovery boom in the 1840s-1900s shut down by around 1910. I also know there are some places in Milwaukee where outcrops of the Milwaukee formation can still be found. I'm wondering if anyone knows any spots near/at Milwaukee where Berthelet Member outcrops of the Devonian Milwaukee Formation can still be found?
  5. On Monday I went on a little trip to one of my top secret places to fossil hunt on the shores of Lake Michigan. It's a small beach in Northeastern Cook County, Illinois which I've always found lots of Silurian aged fossils. (1) This trip was no different!! https://silurian-reef.fieldmuseum.org/narrative/392 I found a large amount of small but pretty interesting Silurian fossils which demonstrate the diversity of reef supported aquatic life in the Chicago land area 444 to 419 million year ago during the Silurian era! (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20)
  6. I've recently been looking over the geologic formations in Illinois and I found one that's a bit interesting - it's a Cambrian period outcrop but it seems to be a bit small, only found in parts of Ogle and Lee County, Illinois. http://ebeltz.net/firstfam/1stfam.html https://www.osti.gov/servlets/purl/1202269 https://ilstratwiki.web.illinois.edu/index.php/Cambrian_System I haven't heard of a lot of fossils coming from this area so I'm wondering if anyone's been fossil hunting in that region of Illinois before and how common are Cambrian Fossils from Illinois's Ogle and Lee Counties?
  7. Joseph Fossil

    Oglesby Fossil ID Part 3

    Not too long ago, I went fossil hunting with @Tales From the Shale and another friend at a Pennsylvanian roadcut in Oglesby, Illinois. We found a truly epic amount of fossils and I'm only now categorizing and trying to properly ID them. Here are a few I'm wondering if anyone would be able to ID? Some of the brachiopods I found there. This next one I am completely baffled as to what it could be? Maybe some part of a straight shelled nautiloid? I'm pretty sure this next one is a Chondrichthyan, but unsure on genus ID. Unknown Brachiopod about the size of a penny. Possible crusher plate about 2 mm. In length! Species ID unknown. Larger unknown brachipods. Possible penny sized worm imprints.
  8. Manticocerasman

    Backlog fossil prep

    The last few fieldtrips didn’t deliver a lot of fossils, so now I got time to get started at my backlog of fossil preps from the Lompret quarry. I still have well over 100kg of material to sort and to prep from there. Last weekend while rummaging through a few of those boxes I picked up one that got my interest. A Fragment of a large nodule with a part of a nicely sized Gephuroceratid poking out. After a good look, there were a couple of other fossil fragments visible in there, sadly the matrix was extremely hard. I had to use a grinder and hammer and chisel to get through it, the problem was that apart from the few visible specimens I was grinding in to it blind, so It happened that I grinded through a few fossils that weren’t visible on the outside. But from time to time I was lucky and exposed a few more fossils, including a nice small pyritized Manticoceras. After that I got the specimens out, I used a grinder to go over the matrix and used colour deepener on the fossils, this gives a nice colour contrast between the fossils and the matrix. The fossils visible on the finished piece are: a few Gephurocertids like Manticoceras sp., a little Tornoceratid, a Bactrites sp., a fragment of a nautiloid orthocone and a brachiopod Ryocarhynchus tumidus. The piece is from the late Devonian, Frasnian, Matagne formation near Chimayin Belgium. A goniatite poking out Grinding, chiseling and airscribing... almost done: All cleaned up picture with scale:
  9. Hopefully I'm not breaking any rules here posting a link. I spent my weekend finally putting my catalog into a proper database, and creating a user interface for it. I used to use Google Sheets, which is pretty great. If I wanted to, I could use them as the source of data, but I decided to create a proper MYSQL database so I can keep relationships across tables, such as the stratigraphy of particular find locations. I have many more improvements coming for it, but it is at least functional right now. Everything from CG-0001 to CG-0161 is from the Glenshaw Formation, Conemaugh Group. https://fossil.15656.com/catalog/ I also maintain a thread with individual photos here, just not everything: https://www.thefossilforum.com/index.php?/topic/94495-pennsylvanian-fossils-from-the-glenshaw-formation/
  10. I'm chipping away at what I think is brush creek limestone to find what I think is Mooreoceras (first two pics) and Metacoceras. I have no idea what the last fossil is. All help is appreciated, thank you.
  11. Hello all! I was wondering if anyone would perhaps be able to help me identify this species of cephalopod I found last summer while out exploring for fossils on Manitoulin Island in Canada (specifically in the Sheguiandah area)? I am pretty sure it is some sort of Orthocone, but it would be neat if I could narrow it down to a potential species level for sure. Any help with this is greatly appreciated!
  12. Here are some of the cephalopod fossils from my latest fossil hunting trip. Enjoy!
  13. Hey guys we found a box of whole body fossils in a box in my dads room after he had passed away. Could you guys be so kind and help me identify these guys and what would be recommended ways to help preserve them.
  14. 3D Printed Fossil Replicas Reveal Lifestyle Of Ancient Cephalopods by David Bressan, Forbes Magazine, July 18, 2021 The paper is: Peterman DJ, and Ritterbush KA. 2021. Vertical escape tactics and movement potential of orthoconic cephalopods. PeerJ 9:e11797 Yours, Paul H.
  15. Hello everyone, Some time ago I was talking about a gastropod fossil with an individual online who thought that it was an ammonite, During this conversation one thing was brought up that I have wondered about for a long time but have not actually been able to answer, and that is what exactly do we consider an ammonite? I have always thought that ammonites are the cephalopods with an external shell containing complex sutures which occur throughout the Mesozoic, but people have pointed out that certain sites talk about ammonites going back to the Devonian. I have always thought that those were ammonoids but not necessarily ammonites, I don't know how I decided that this was the case and now I realize that this might be wrong. Does anyone know if those Paleozoic ammonoids are actually considered ammonites? What exactly is an ammonite and when do they appear? I would be very interested to hear what you guys have to say, any input is appreciated. Thank you!
  16. Manticocerasman

    Devonian fieldtrip with a view

    Last Saturday we went on a new fieldtrip on one of our favorite hunting spots for Devonian fossils. Not a lot of fossils were found and the only large goniatite, although pretty at first sight turned out to be a nightmare to prep with little to no preservation further down in the nodule. On the other hand we had verry sunny day with nice views over the area and the first flowers taking advantage of the sunlight on the older scree piles. We also brought home a few small nodules with tornoceras fossils , they will take a while to prepp before we will see if they were worthwhile.
  17. drbush

    what is this fossil

    Greeting my fellow Homo sapiens , can you help me with this , i went to jubaila city outside of Riyadh , the area is Kimmeridgian , it was a surface find , what type is it ???
  18. Hi all, Last part of my finds of the year. In autumn, between lockdown 1 & and lockdown 2, we managed another 3 days hunts. First day was spent in our usual trilobites spot, which happened to be on the way to our main destination this time. You have already seen in my first part some of the trilos we did find on that day, which was a rather good one for me. Day two was spent in Nanteuil quarry not far from Niort. the quarry got mostly bajocian and aalenian. the aalenian is on the "ground of the quarry" and was mostly drown at that time of year. So Bajocian that was. An explosion had occured recently so we had quite some material to process. Most of the ammos there have no heart, which is quite frustrating, but from time to time, you can fine a pretty one. 2 finds on that day : Normannites sp ammonite A huge not yet determined nautiloid (not the usual cenoceras we find there) We kept going till 18h30 then it was time for a shower at the hotel and a meal at the restaurant.
  19. Taking advantage of my time spent home, I finally got a couple of glass display cases to showcase fossil specimens from my collection. Finding ones that were affordable and blended with the style of our home, was challenge, and I took my time choosing. Despite a bit of criticism I receive from some of my fossil collecting friends, I am a generalist collector who doesn't specialize in anything. Having said that, my collection does feature some rare faunas; Devonian and Cretaceous bivalves, Lower and Middle Devonian brachiopods and gastropods, Cretaceous vertebrates, etc. The focus is largely on fossils of the Northeast (New York, New Jersey, Pennsylvania, Connecticut, Maryland, and Eastern Canada), but a number of trips to the Ohio Valley, Texas, out west, and Germany have expanded my collection which is about 90% self collected with remaining fossils primarily gifts from generous friends. There is only one purchased fossil in the display and one I traded for. I ended up with twelves shelves- ten devoted to animal life (seven of those are invertebrates), and two for plants. I was seeking to emulate the old style of specimen display that one might encounter in a 19th century museum, when displaying specimens was the priority. I didn't and couldn't display my entire collection which is too large, so I picked representative specimens to tell the story of the vast variety of prehistoric life on earth. Some of my best specimens didn't make it into the display. These are the cases which are situated in our finished basement:
  20. So I found this fossil skull... Kidding! Anyway, back digging in the needmore formation outside Winchester VA and I’ve started finding a lot (like in one small part of the exposure, a whole lot) of these sorts of shells. Initial thought was some kind of ammonite. Searched for mid Devonian and got agoniatites vanuxemi but I don’t get any hits in this formation/location. Still looks right though, although I guess it could be some kind of gastropod? Mostly a little over 5 cm at the largest. Also, they’re generally the same color/consistency, save for this one very colorful specimen (very distinct blue, pink, orange) and I was wondering if anyone knows why it would have preserved that way. Surely the shell wasn’t that color
  21. Hello all! So I've been looking through my collection and noticed a bunch of fossils that I haven't yet identified yet. Some of them are quite peculiar, as I've never seen some of them until now. This'll be a long post with 12 different fossils in need of a name so brace yourselves hahah: All fossils found in Toronto creeks - Ordovician Era - Georgian Bay Formation 1. I thought this was the typical Treptoceras crebriseptum that I always find at my local creek, but when I cracked it out from the matrix I noticed it was perfectly smooth. Maybe its the living chamber of the nautiloid? 2. I honestly have NO clue what this is. Never seen anything like it. I thought it was nothing, but it seems to have such a defined symmetrical shape... ...
  22. Hello! Just wanted to show off some VERY nice fossils (by our standards) I found this past weekend in Etobicoke creek right around the border of Mississauga/Toronto! Me and my dad decided to get back in the groove for some fossil hunting and spent a while biking off road until we came across the mother-of-all rock deposits (by Toronto standards). I posted a couple pictures of the big/best finds below, sorry I didn't have a ruler on me for reference so Canadian currency will have to do for those not from Canada: *To make the lives of those outside of Canada slightly easier: 2$ (multi-tone) coin is 2.8cm, 1$ (loon) coin is 2.65cm and quarter (horse) coin is 2.381cm* For the very last one, we were not able to carry them home on our bikes so they were left there - maybe someone from the forums could pick it up for themselves? Let me know what you think of these finds! We were pretty proud for not having done a dig in a very long time. -Em
  23. JUAN EMMANUEL

    Treptoceras crebiseptum orthocones

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

    Treptoceras crebiseptum specimens. The one on the left comes from Mimico creek. The blue grey one on the right is covered with bryozoans and comes from the Humber river area and is complete is actually missing the living chamber. Both belong to the Georgian Bay Formation.

    © (©)

  24. Hi TFF, I recently was in New Jersey and stopped by a creek where I found this. This is a part of a belemnite, an extinct order of squid-like cephalopods that existed from the Late Triassic to Late Cretaceous (~214-80 mya); these are common to the NJ area and the NE USA (as well as all over the world). The cone (rostrum) you are looking at was inside the animal and served as part of an internal skeleton-like structure; it also served as a counter-weight while moving in the water. On the cross-section (C & D), notice the radial symmetry which sprouts from a central axis outward, these are made of calcite crystals, deposited in concentric layers as the animal grew. The symmetry runs through the entire cylindrical body to the apex. These animals were very abundant in the sea and they had 10 arms that had hooks on them which they used to catch prey (soft body fossils exist). There is extensive literature on them available. Image C is most interesting, because there is a bore hole on it, something quite commonly found on the exterior shells of clams, etc. I found that according to Seilacher (1969), micro barnacles would often bore holes in dead (and possibly live) belemnite rostrums on the horizontal plane just like this. See: Seilacher, A. (1969). Paleoecology of boring barnacles. Am. Zoologist, 9:705-719. Univ. of Tubingen, Germany. Notice the uniform long shape, the sleekness of this evolutionary mini marvel.... as Dawkins has said, "Science is the poetry of life." Hope you find this interesting.
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