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  1. Tidgy's Dad

    Adam's Early / Lower Devonian

    The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these g
  2. Mochaccino

    Two Nautiloid Steinkerns?

    Hello, Could I get some help identifying these two nautiloid steinkerns? Unfortunately no precise age/locality info on them but I think they might be from the Pennsylvanian or Permian of Kansas or Texas. They are both around 8-9cm wide. 1. 2. Referring to this: http://inyo2.coffeecup.com/kansasfossils/kansasfossils.html I think #1. might be Metacoceras and #2. might be Liroceras. @Missourian I believe you are referenced in that post and you seem to be experienced in this fauna? Thanks
  3. Hello, found what I think are nautiloids and brachiopods. I found the rock in a stream and I can't say what limestone (maybe brush creek or pine creek), but the area is Glenshaw Formation in northern Allegheny County, Pennsylvania. It's quite difficult for me to get good pictures, let alone good pictures with scale, so I'll tell you that the first two pictures are 2 cm (same organism), the second is 5.5 cm and the largest Nautilus in the last pictures is about 6 cm. All information is appreciated, thanks!
  4. dolevfab

    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, bu
  5. Manticocerasman

    Middle Devonian cephalopod prep.

    Last weekend we made a fieldtrip with the “CGH” ( Cercle geologique du Hainaut ) to the quarry “La Couvinoise” , the quarry happens to be in Couvin :p Here the deposits are middle Devonian: Eifelian and Givetian, so a bit older than the locations we usually prospect. The best part for the fossils are the Eifelian deposits, but sadly those layers are no longer in exploitation. However, due to the drought and the low water level we had access to a small but promising scree pile. Here we found a fragmented nautiloid, but the centre of the specimen seemed to be still in the matrix.
  6. Tidgy's Dad

    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 Skelg
  7. I recently bought this on online with no provenance, from a buyer with 1 feedback and some rubbish photos. To be honest I figured either nothing would turn up or itd be concrete, which is what I was hoping for (needed a doorstop) 'Unfortunately', it appears to be real, and now I'm interested. I'd appreciate any input. I've tried to show the shell patterns in some of the photos, as well as other fossils in the matrix base.
  8. historianmichael

    Texas Nautiloid With A Surprise

    A few weeks ago my brother and I took a weekend trip to do some sightseeing in the Dallas-Fort Worth area. I had been meaning to check out an area of interest in the Late Cretaceous Period, Early Cenomanian Grayson Marl, so early Sunday morning before the museums in Dallas opened I made a quick stop to the site to at least cross it off my list. The outcrop itself was small but I was able to find the usual suspects- Ilymatogyra oysters and Neithea scallops, partial Mariella bosquensis heteromorph ammonites, and a Stoliczkaia conlini ammonite that is sadly missing its juvenile whorls. The real h
  9. I just made new ID posters for Hamilton Group Cephaloods - one for Nautiloids and Bactritoids, and one for ammonoids. The reconstructions are either new or updated for accuracy. Color patterns on the first picture are based on close relatives. If anyone has any suggestions, please let me know - I want these to be as useful as possible.
  10. Following a refreshing swim at the lake with a few friends over the weekend, I decided to take a spur-of-the-moment stop at a construction site I happened to be driving by. The sun was setting, cooling the area and finally making it hospitable despite the recent heat wave. I was not familiar with the exact geology of where I was, but with only an hour and a half of daylight left I decided to not waste too much time and immediately began scouring the dirt. I quickly noticed that the ground was composed of two distinct formations. The higher layer was a grey limestone while the layer
  11. After a lot of research, I made this family tree for all of Cephalopoda. I have posted major resources below. Dates and lots of other stuff: https://paleobiodb.org/#/ Mass Extinction events https://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/end-ordovician-extinction/ https://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/late-devonian-extinctions/ Ammonoid classification: https://www.researchgate.net/publication/292489944_Fossil_Focus_Ammonoids Extinction of the Goniatites: https://www.nationalgeographic.
  12. Ludwigia

    Nautiloid Treptoceras trebriseptum

    From the album: Slices

    Toronto, Canada. Georgian Bay Formation, Ordovician.
  13. Took a little trip to Lake Jacksboro spillway and concentrated on the microzone hoping to find some of the little goniatites and nautiloids. Only found a couple that were "big enough" to see , but once I went through my bag of matrix, I was happy to have found quite a few of the microfauna! A few I am not sure of the ID so any help is appreciated! All of these are 1/8 to 1/16 inch Goniatite Peritrochia sp. Nautiloid Gastrioceras listeri same as above, I think Goniatite Prouddenites bosei Goniatite Cardiella ganti
  14. It took some time, but thanks to Covid-19 (!! - see acknowledgements) its out now: A Systematic Study of upper Silurian (Ludfordian) Nautiloid Cephalopods from the Eggenfeld Section (Graz Palaeozoic, Styria, Austria) (pdf, external site) Here is my last visit to that site: Visiting some of the oldest fossils of Styria, Austria (Silurian orthocerids and brachiopods) - Fossil Hunting Trips - The Fossil Forum Best of all, some of my former specimens are pictured in that paper, especially some polished sections (see acknowledgements). Franz Bernhard
  15. Creek - Don

    Central Texas Nautiloid

    Hi everyboy. I stopped by the road cut near I14 and I35 in Belton, Texas today and found these two nautiloids lying side by side. Are these Eutrephoceras nautiloids? I have never found these before. I looked at geologic map, and it's showing up as Weno Limestone and PawPaw Formation. One measures 120 mm and smaller one at 100 mm.
  16. My next door neighbor, Jim, was kind enough to take me to my cataract surgery today, and after I took him out to breakfast, we had a little time to kill before my follow up appointment. On a whim, I suggested an Austin Chalk creek stomp since current drought conditions wouldn't result in muddy shoes. It was a fortuitous move, as the creek outperformed expectations. The bedrock there is slow to erode, so I've rested the site for a few years. We got 2 nice Eutrephoceras nautiloids. The one that Jim is posing with below is now cut to a nice pedestaled display piece wh
  17. Near the shores of the south-eastern Randsfjorden in Norway is a loaction with an Early Silurian outcrop. Last summer I found some gastropods and this nautiloid in a road-cut on a rock which seems to be sandstone, of very hard material. It seems to be an orthocone, although very slightly bended with the siphuncle visible on the top cross-section, placed in a semi-central position. Could it be possible find out which order and family it belongs to? I guess it is not an endoceras, because the siphuncle is not very large. The lenght of the speciemen is about 12cm.
  18. PaleoOrdo

    Nautiloid or trilobite?

    I wonder if this fossile is a trilobite or a nautiloid, from Late Ordovician in the Oslo-field, Norway.
  19. Bringing Fossils to Life

    Spyroceras?

    Hi everyone! I was going through my Swatara Gap fossils when I came across this specimen, which I had originally thought to be coral. However, it looks similar to pictures of Spyroceras I've seen. Can anyone help? The first picture shows the texture, the second picture is a cross section, and the third picture is an imprint on the other side of the rock that looks cephalopody.
  20. This was my first trip to Trinity river in Tarrant co., this section was close to borders of QT and QAL and didn't know what to expect. I certainly didn't expect to lift up rock and find a Nautiloid/Nautilus still soft in the marl. Have no idea what the marl was or how to determine age of this. Only prepped it a little afraid to mess it up. Tooth from same place and hesitant to call it bison since they're always bovid.
  21. PaleoOrdo

    Nautiloid? Help Id please

    I found this stone with some unknow pattern in the Kalvsjøen formation, Oslo field (late Katian, in late Ordovicium). Can it be two nautiloids or alge? It is some small gastropods there too. The length of the longest "nautiloid" is about 7 cm.
  22. Samurai

    Nautiloid in phosphatic nodule

    Location: Missouri Period: Pennsylvanian Formation: Iola Limestone (Muncie Creek Shale Member) (MO) hello! this is my first nautiloid in a phosphatic nodule from this locality and unfortunately the split wasn't desirable, nevertheless you can see the inside beauty of this specimen I know the genus Prouddenites have been found in these phosphatic nodules as the user Missourian happened to have a post from a couple years back showing his specimen the only issue is with mine its harder to see what it is since the outer shell isn't that v
  23. Finally finished some new artworks! Ammonites and Nautiloid is 56" x 30"....it's a big one! Trilobites18" x 24"
  24. Rogue Embryo

    Orthoconic nautiloid?

    Hello. Any comments on this find (3 photos below) at Mimico Creek in Toronto (species, anatomy, etc.) would be appreciated!
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