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Found 10 results

  1. Thomas1982

    Bactrites

    From the album: Mahantango Formation

    Bactrites Juniata County, Pennsylvania
  2. 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:
  3. 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 couple ammonoids (Tornoceras and Agoniatites), and some Pleurodictyum coral. In the distance, a shoal of Bactrites drifts. This is one of my first entire ecosystems.
  4. 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.
  5. 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.
  6. 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 quarry are Brachiopods, Bivalves, Gastropods, Corals, Bryozoans, Cephalopods like Goniatites and Othocone Nautiloids and in very rare cases Placoderm and trilobite material (although no one was that lucky during the excursion). The quarry is also very rich in minerals like Baryte, Calcite, Quartz, Galena, Fluorite, etc... I have long looked forward to visiting this quarry, so I was very happy to finally be able to go and it did not dissapoint! It was quite foggy in the morning when we arrived which both looked eerie and cool at the same time, luckily it later cleared up! There where quite a lot of other people in the quarry (mainly people looking for minerals like Byrite and Galena) but our club headed straight to higher plateau of the quarry where some of the black Matagne Shales where with very nice Pyritized fossils and to where the waste heaps were to look for fossils. That's me looking for Brachiopods and pyritized Goniatites and Bactrites. A large Hexagonaria coral which was a little to heavy to bring home We also found some Pyrite cubes which (although very exhausting) we managed to extract
  7. 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 the ammonoids ) Fragments of them often pop up from the shales, but I rarely find them complete. This one is going in the display cabinets
  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. Arion

    Bactrites arkonensis

    From the album: Hungry Hollow Fossils

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

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