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Found 12 results

  1. Bringing Fossils to Life

    A reconstruction of the Mahantango Formation

    I just finished a reconstruction of the Mahantango ecosystem, based off of fossils I have found at corresponding sites. This certainly does not cover all species in this formation, but many of the most prominent (Sorry no Dipleura, haven't done that one yet). I recently learned about Striacoceras and re-identified many of my orthocerids as this obscure genus. Striacoceras is the brown orthocone in the background. I included two crinoid genera, (left to right) Ancyrocrinus and Botryocrinus. an Eldredgeops searches for prey. There are several Mucrospirifer brachiopods, some Orthonota bivalves, a
  2. 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.
  3. Thomas1982

    Bactrites

    From the album: Mahantango Formation

    Bactrites Juniata County, Pennsylvania
  4. I had a friend ask me what this fossil that she found in the Montour Fossil Pit yesterday was and I am unsure. It looks to me like a Bactrite or other strait-shelled cephalopod but I am not sure. Any help would be appreciated.
  5. Hi everyone! Around 2 months ago on the 16th of october 2021 I went on a fossil hunting trip with the BVP to the stone quarry of Lompret in Belgium. https://www.paleontica.org/locations/fossil/654 The rocks in this quarry are Devonian in age and date back to the Frasnian (382.7 million years ago to 372.2 million years ago) with the finds mostly being from both the Neuville and Matagne Formations. According to Tom our excursion leader this quarry exists out of what used to be coral reefs and islands that formed around atolls. The fossils that you can find in this quar
  6. Manticocerasman

    Bactrites sp.

    I've been cleaning up a few boxes with devonian fossils from the past few months and came around this nice little fellow. I cleaned him up and gave him a paraloid treatment to preserve the pyrite. It is a complete specimen of a Bactrites sp. from the Matagne shales ( Frasnian, late Devonian ) from Belgium, both phragmocone and body chamber are preserved. They are a little unusual, as the do not belong to the nautiloids as his first appearance might suggest but they have their own subclass and are considered to be the ancestors of the ammonids ( they have a ventral syphuncle like all
  7. HynerpetonHunter

    Cephalopods I Own

    Michelinoceras sp., Swatara Gap, Devonian, Hamilton Group, Mahantango? Fm. Pennsylvania
  8. Manticocerasman

    Devonian cephalopod collection

    I finaly got around putting all my best cephalopods specimens that I collected over the past 4 years in the frasnian of southern Belgium on there place in the cabinets. They all come from the same location. (except an orthocone and a receptaculites from the same age but from a different spot ) most of it has already been posted in individual posts, but this gives an overal vieuw of the part of the collection on display. Enjoy al the Manticoceras, Crickites, Tornoceras, Bactrites, Orthocones and more
  9. BobWill

    Possible Texas Bactrites

    I found this at the Lost Creek Dam site at Jacksboro Texas. It is the Finis Shale Member of the Graham Formatoion in the Upper Pennsylvanian Sub-period. I don't often find the apical end of any nautiloids so I was thinking it could help with the ID. There is a dark spot on the oral end that may or may not be the siphuncle, it is not clear. I thought it may be a Bactrites but it would be one without the hemispherical apex and constriction you see on some. It also has a cameral ratio higher than some Bartrites at around 3. I don't know what the black dots are.
  10. Manticocerasman

    Prepping nodules with Bactrites

    Although the most pieces of my collection are goniatites, I am more than happy to add other Devonian cephalopods to my collection from time to time. On my last field trip for devonian cephalopods I splitted a few nodules and some of them had a few uncommon fossils in them: Bactrites I rarely find decent fragments of them, but those few were looking promising. Bactrites, although they look like an orthocone are in fact straight Ammonoids and not a Nautiloid. the septas start to be slightly ondulated, but most important they have a ventral siphuncle, a typical trait
  11. Past weekend we had a "sunny" field trip to my usual hunting spot with the "LITHOS" geology club. We spent the whole day searching the late Devonian shales and nodules for al kind of fossils, brachiopods, crinoids, cephalopods, corals,... We did find the usual pyritised cephalopods ( manticoceras sp, tornoceras sp. and bactrites sp. ) but to me my biggest prize was when I hit a layer with a lot of goniatite anaptichy enjoy the pictures :
  12. Arion

    Bactrites arkonensis

    From the album: Hungry Hollow Fossils

    Bactrites arkonensis, Arkona Formation (Eifelian), Arkona (15 x 7 mm)

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