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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 groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
  2. From the album: Middle Devonian

    Tornoceras arkonense Goniatites Preserved in Pyrite Middle Devonian Arkona Shale Hungry Hollow (South Pit) Arkona, Ontario Some were generous gifts from Fossildude19 and Kane
  3. As promised, my second trip report covering my day trip last October to the two most famous Pennsylvanian-aged fossil locales in Texas is here! That same Saturday after visiting Mineral Wells and finally finding my first trilobites I made the hour drive north to Lake Jacksboro. For those who don't know, the Lost Creek Dam on the southeastern side of Lake Jacksboro was constructed from earth dug out of a borrow pit a short walk away. As the lake and its dam happen to sit on top of the Finis Shale Member of the Graham Formation (although there is debate that , which dates back to the Late Pennsylvanian (or the Late Carboniferous for any international fossil hunters), the digging of the pit exposed a multitude of fossils that are still regularly being eroded out after every rain today. It's one of my favorite sites I've ever visited for the incredible diversity of the fossil species on display and the extreme ease with which someone willing to sit down on the shale can find them. Having just visited Mineral Wells, the variety of brachiopods, bryozoans, gastropods, bivalves, nautiloids, and corals was a welcome respite from the endless landscape of crinoid columnals I had just walked all over in my search for trilobites. Making my way across the dam and walking up to the expose shale slopes of the borrow pit, I was instantly greeted with the equivalent of an all-you-can-eat buffet for fossils. Everywhere I looked I saw something new. Right away I found a tripmaker: a huge shiny blue conulariid. It was complete too which was nice considering every one I had found on my first trip had been a broken fragment barely two centimeters across that I could only identify because of their ridged texture. Similar in appearance to modern day sea anemones when they were alive, there's nothing really like conulariids around today so I really enjoy finding such strange animals. Immediately following the conulariid was a second tripmaker: my first complete goniatite! Although small and lacking the ornate sutures that some species possess, I was just happy to finally find one that was complete. Broken fragments of other coiled nautiloids litter the shale slopes and I can only guess that there must be an incredibly short window to find one whole after it erodes out before it is destroyed. My guess is this one is Schistoceras. On the heels of one nautiloid find came another. I saw another mistakable coiled shell on the top of one of the slopes. Although it was flattened, I wasn't too upset. This specific specimen is most likely Domatoceras sculptile. Next up was a change of pace, with the largest brachiopod I've ever personally come across. The pedicle valve was speckled with stout but tiny spines and the shell material was partially stained a pinkish-orange in places which made a nice find even nicer. Identifying it wasn't hard as only one brachiopod at the site gets this large, Linoproductus. It was after finding the Linoproductus that I returned to the tops of the shale slopes. I had heard that the strata exposed here were the likeliest to produce the one type of fossil I was holding my breath hoping I might find. As everybody knows, my fossil interests lie with vertebrates first and foremost. I had never found one of the teeth that are colloquially said to have come from Pennsylvanian sharks but that actually come from a strange family of extinct cartilaginous fish called the Petalodontiformes. They would have cut an unusual figure during the Pennsylvanian with their buck-toothed grins featuring teeth that weren't sharp or even particularly hard like almost all fish and shark teeth that have evolved since. Fortunately I was in luck that day and the extra attention I had been paying to anything with a white enamel-ish look to it worked out. The tooth was missing the fragile root, which was expected, and about half of the blade, but I didn't care - I had found the oldest vertebrate fossil of my fossil hunting career! (Unfortunately I don't have any in-situ picture as I was too excited when I first saw the tooth to remember to take one. ) A couple paces in a different direction along the top of the outcrop and I had found a second tooth - this one possessing most of the blade but still no root. There was some matrix encasing the very tip that I later cleaned off when I returned home. Here are the two teeth side by side: Plus a picture of the smaller tooth once it was prepped: I tentatively identified these as either Petalodus ohioensis or Petalodus seratodus, but the in-and-out curving edges of the teeth don't perfectly match pictures I've seen online. I can only guess that this is just variation depending on the tooth's position in the mouth, or there might be a species of Petalodus at Jacksboro that just hasn't been noted yet. The sun was starting to go down by this point and I decided it was time to make my way back across the dam and to my waiting car. But as luck would have it there was one final surprise in store for me. Piled at the bottom of the slope were several huge chunks of nautiloid shell, arranged almost as if someone had visited the site before me and picked them up, before eventually deciding they weren't worth the trouble on their way out and dumping them on the ground. That there were two different species present seemed to support this. The two large chunks towards the top of the photo are from the grypoceratid nautiloid Domatoceras sculptile, absolutely the largest variety of coiled nautiloid you can find at Jacksboro. The smaller chunk with the bumps along the rim is a different nautiloid, Metacoceras. Here are some additional pictures of the Domatoceras chunks: And that was it for my Pennsylvanian day trip! Just a couple of weeks before I had put together a bucket list of all the different types of fossils I most want to find, and I was very happy that after this trip I was able to cross my first trilobite, a complete goniatite, and a Petalodus tooth off the list. A return trip is definitely in order! The day's best finds: Top: Petalodus ohioensis/seratodus Top Row: Parajuresania sp. (2 individuals), Unknown, Linoproductus sp., Domatoceras sculptile Bottom Row: Astartella concentrica, Condrathyris perplexa, Composita ovata (2 individuals), Schistoceras sp., Conularia crustula - Graham
  4. Guest

    Morocco Devonian Ammonites

    These are from the Devonian of Morocco
  5. Found these, my first Pennsylvanian Age marine fossils in calcareous shale in a road cut in western Pennsylvania on a recent trip. According to the Fossil Collecting in Pennsylvania guide, the formation is the Ames Limestone. Any help with IDs would be greatly appreciated. Thanks. 1.)
  6. Day Two ; Locality One (or Six if you include Day One) Black Sahara, South of Erfoud 20th February 2019 Well this is where things really get interesting, so stick with this thread as there are dozens of photos of fossils coming up. Looks at the tags if you want clues. I was up bright and early and wandered out at about 7 am to watch the sun rise over the still mighty Erg Chebbi dunes. And as night's candles were burnt out and jocund day stood tiptoe over the misty duney tops, the chaps came to join me and managed lots of photos. Here's one, if you would like to see more, I'm busy posting a kazillion of 'em under the Nature Photography thread.
  7. Ludwigia

    Goniatites sp. (Haan 1825)

    From the album: Slices

    14x6cm. From Winterberg quarry near Bad Grund in Harz, Lower Saxony, Germany. The stratigraphy is interesting. Although the micrite sediments in which they and other fauna were found are early carbiniferous, they were deposited in a tectonic fissure within the local devonian reef limestone, which made for a bit of riddle work when they were first discovered.
  8. Manticocerasman

    holiday goniatite hunt.

    During our holiday in the ardennes we made a compulsory stop at our favorite hunting spot for devonian cephalopods. There has been a lot of new activity in the quarry, but sadly not in the best deposits for fossils. They are also starting to fill the older spots with ground. But the usual exposures were still delivering some goniatites from time to time. And we dit get quite a good haul this time. There was one notabely well preserved Manticoceras sp. and as a bonus we had a rare nautiloid. I cleaned up a couple of the goniatites with chemical prep; the result was spectacular.
  9. Here are two upper Carboniferous Gastrioceras listeri Goniatites from the Lancashire coalfield (UK) which I have in my collection. I would be very interested to see other people’s Carboniferous Goniatites. Thanks, Daniel
  10. Hi. I have a number of beautiful goniatite that were found in east Co.Sligo, Ireland. This is near an area in Leitrim that is abundant in nuirian goniatites. Can anyone ID this spieces, I'd be very grateful Here is some more photos.
  11. This all started over a year ago. I was selected as Member of the Month and a couple of TFF members from Texas invited me down to the big state to collect. I primarily collect in my home region, the northeast, but I've taken fossil forays to New Mexico, Kentucky, and Germany and was willing to consider a trip to Texas and the opportunity to visit some classic fossil sites and collect fossils that are outside my usual focus. I began planning this about ten months ago, contacted potential fossil collecting partners and did my own research on fossil sites, geology, and the types of fossils I would likely encounter. I had never been to Texas let alone fossil collected there. From the Forum I knew there was a lot of great hunting. Then there was all of the logistics, what to stay, what to bring. Since I wanted to bring back a lot driving appeared to be my best option, but I hadn't driven that far solo in over thirty years. Timing of my trip; mid-late September, came right after my daughter went away to college and I was in the middle of moving to a new place. So things couldn't have been more hectic. Finally, early in the morning on September 8th I set out. Things went okay until I was in Kentucky. Just as it was turning nightfall, torrential rain hit, traffic was stopped on the interstate for two and a half hours, and the last two hours of the trip I struggled with wet conditions and poor visibility. I finally arrived at my parents' house just after one in the morning. The next day on my way over to my sister's I took a small detour and stopped at an outcrop I was well familiar with in Leitchfield, the Upper Mississippian Glen Dean Formation.
  12. 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!
  13. 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.
  14. Manticocerasman

    double goniatite fun

    It has been a while since I've found a decent sized goniatite on my favorite huntingspot, since the good deposits are no longer accesible. But recently I did find a specimen in a recent buldozer track. sadly the specimen has taken a hit from the vehicle moving over it. The extra bonus on the other hand was that there was a 2nd specimen right next to the 1st one. I've rarely seen 2 Manticoceras sp. from this size on the same matrix, so I was very happy with this one On top of that the preparation went realy smooth
  15. fossils.ie

    ID of goniatites / ammonoids

    The Namurian cyclothems in West Clare, Ireland originate in an environment of delta systems which deposited sediments in an offshore basin (Clare Basin) and are referred to as the Central Clare Group. There are five cyclothems comprising marine bands (conventionally considered to form the ‘base’ of each cyclothem) and upwards coarsening fine-grained and sandstone sediments. The five cyclothems are named (from oldest to youngest): Tullig, Kilkee, Doonlicky, Cyclothem IV, and Cyclothem V. The marine bands contain - among other fossils - index fossils in the form of ammonoids (goniatites). These index fossils are used to determine the stratigraphy of the cyclothems. Central Clare Group marine bands and goniatite index species (youngest at top) Cyclothem V top - R2c1 - Reticuloceras superbilingue alternatively Bilinguites superbilinguis (Bisat, 1924) Cyclothem V base - R2b - Reticuloceras wrighti alternatively Bilinguites metabilinguis Cyclothem IV base - R2 - Reticuloceras bilingue alternatively Bilinguites bilinguis (Salter, 1864) Doonlicky base - R1c - Reticuloceras reticulatum Kilkee base - R1b3 - Reticuloceras stubblefieldi alternatively Phillipsoceras stubblefieldi Tullig base - R1b2 - Reticuloceras nodosum My problem is the differentiation between these goniatite species in the field. Some of them look quite similar - to me - and in addition, they are preserved as very compressed, often crushed shells. At one location, they are firmly incorporated into concretions which appear to have dried out at some time, showing polygonal cracks filled with calcite; very handsome but even more difficult to identify. Under this topic, I have grouped images of goniatites by location and added information regarding the goniatite species recorded on the Geological Survey Ireland Spatial Resources website for each location. Any help with identification is greatly appreciated! So the first batch of images from Seafield beach, near Quilty village, County Clare, Ireland is in my collection 'ID of goniatites / ammonoids - Seafield'. The Geological Survey Ireland Spatial Resources website records Reticuloceras superbilingue, Reticuloceras bilingue and Reticuloceras stubblefieldi for this location. But which is which in the images?
  16. Manticocerasman

    Devonian cephalopod prepwork

    I have acces to a more powerfull compressor since last week, so the past few days we have been quite bussy prepping lots of fossils. Those are some of my late devonian fossils I have prepped, this is my favorite one to start with, not only does it have 2 cinds of goniatites but I found it at adifferent location than the one I usualy prospect. Manticoseras sp and Tornoceras sp. Late Devonian ( Frasnian ) Nismes ( Belgium The next pictures ar all from my usual location near Chimay ( Belgium) (can you spot the intruder in the next few pictures? )
  17. I found these Goniatites in the British coal measures. Would anyone like to prepare these for me in return for some fossils? I have many fossil types available. Please note, the inner whorls of these Goniatites are almost impossible to prep, so it would be best just to expose the outer whorl. I am not sure how well these will prep, but I have decided it’s worth a try to see how they will turn out. Thanks, Daniel
  18. This saturday Natalie and I went on a fossil hunting trip to my favorite huntingspot in the hope to find a few devonian cephalopods. The weather conditions were cold but sunny to cloudy and the rain of the last week removed the dust from the rocks (although making the place muddy ) Not a lot had changed since our last visit, no expansion in the quarry or new scree piles so it didn't look verry prommising. But with a little perseverence we did get our haul of goniatites and orthocones. most came from the upper parts of the quarry so the were a bit wethered, although Natalie found a few very nice specimen. My best find was a rare nautiloid, but I have to prepp it out to see how it will turn out. after the hunting trip we visited an old marble quarry hidden in the forests in the area: Enjoy the pictures some vieuws of the area when leaving the quarry: some of the finds of the trip:
  19. Manticocerasman

    Into the Devonian reefs

    Last weekend we went to a fieldtrip with the BVP ( Belgian Associaton for Paleontology ) to my favorite quarry We had the opportunity again to prospect the frasnian deposits around this fossil reef. There hasn’t been a lot of activity in the quarry since last time, so the finds were less frequent than normal, but we still did find a decent haul of fossils, mainly cephalopods. The great weather conditions and the good company made this a very fine fieldtrip and ended with a visit to a local tavern for a few refreshments. (pictures by anthonie Hellemond (c) )
  20. Ludwigia

    Goniatites sp. (Haan 1825)

    From the album: Slices

    6x5cm. Slices at two different angles. From Winterberg quarry near Bad Grund in Harz, Lower Saxony, Germany. The stratigraphy is interesting. Although the micrite sediments in which they and other fauna were found are early carbiniferous, they were deposited in a tectonic fissure within the local devonian reef limestone, which made for a bit of riddle work when they were first discovered.
  21. Ludwigia

    Goniatites sp. (Haan 1825)

    From the album: Cephalopods Worldwide

    4cm. A slice through the middle of a goniatite from Winterberg quarry near Bad Grund in Harz, Lower Saxony, Germany. The stratigraphy is interesting. Although the micrite sediments in which they and other fauna were found are early carbiniferous, they were deposited in a tectonic fissure within the local devonian reef limestone, which made for a bit of riddle work when they were first discovered. Below is another one of them.
  22. It has been a while since we went to my favorite hunting spot near Chimay in Belgium, so I was realy eager to go back when we got there we had a little surprise, the whole back of the quarry was transformed in a motor cicle trail, apparantly this sunday there wil be a race and a lot of the bikers were prospecting the trail on foot in preparation of the race. luckily this didnt hinder us on our search, and this opend even opportunities since they dug through some of the stoone piles to make the trail thus revieling new material to go through, although we were careful not to dammage the trail. my first find was a strange large nodule covered in mud, at first vieuw it looked to be a big goniatite, and since it was found near the car I directly put it in the trunk without giving it further ispection. after looking on the sides of the new tracks we went to the big scree where we usually hunt, the heavy rains from the past few weeks cleared a lot out and we did find a few very well preserved goniatites. On the top of the scree pile Natalie found a huge specimen: a goniatite of around 40cm an not far from it I found a 2nd large one . we had a very sccesful field trip today with great wether conditions ( mabey a little to hot ) and excelent finds. my biggest surprise was when I drove home, I stopped at a self carwash to clean of the mud of the big specimens with a high pressure cleaner. The first mud coverd nodule that I put in the car wasn't a goniatite, but a nodule with 3 nautiloids on it, 2 incomplete, but a big one in the center. A vieuw on the race track: A toad hiding in the rubble. Natalie at the spot where she found the big goniatite: the huge specimen she found: and a 2nd one : A lot of life in the pools in the quarry: A realy nice Manticoceras sp waiting for me more shales and limestone to go through: A stop for water and snacks after the hunt, and of course a lot of local beers on sale "Chimay" beer: the large specimens after the high pressure cleaner: the surprise Nautiloids after the mud was removed: I still have alot of unpacking to do and prepp work in the next few days. I'll post updates in this post.
  23. Today we had a field trip with the "Lithos" geology club at my favorite hunting spot. Although the day started with freezing temperatures, the sun quickly rose the temperatures during t morning and gave us a beautiful day. the last time I visited the quarry the finds were disapointing due to the lack of activity in the quarry, but today we were lucky and the past week a new acces road was being dug to the side of the quarry, straight through the Matagne slate. It didnt take long before I found my first fossils, at first a few halve goniatites, but after a while a complete large specimen and a nautiloid that I had never seen before at this locaton. we searched further in the quarry where we found the spot where the rest of the slate was dumped, resulting in a couple extra goniatites, one of them was an exquisite specimen and a 2nd nautiloid. Note that al the goniatites this time weren't Manticoceras specimens, but an other Gephuroceratinae: Crickites sp. they differ from the former with a more bulbous shape and large size ( up to 30cm in diameter ) In the afternoon we prospected the usual scree piles at the back of the quarry where we found a multitude of small pyritised cephalopods and I even found a broken nodule with very rare placoderm remains. Natalie also found a large and complete Crickites sp. at this spot This day turned out to be one of my most productive days at this location.
  24. From the album: Middle Devonian

    Tornoceras uniangulare (goniatites preserved in pyrite) Middle Devonian Moscow Formation Windom Shale Pyrite Bed Hamilton Group Penn Dixie Quarry Blasdell, N.Y.
  25. Dpaul7

    Goniatites Ammonite a.jpg

    From the album: MY FOSSIL Collection - Dpaul7

    Goniatites Fossil SITE LOCATION: Morocco TIME PERIOD: Middle Devonian to Permian - (390-139 million years ago) Data: Goniatids, informally Goniatites, are ammonoid cephalopods that form the Order Goniatiida, derived from the more primitive Anarcestida during the Middle Devonian some 390 million years ago. Goniatites (goniatitida) survived the Late Devonian extinction to flourish during the Carboniferous and Permian only to become extinct at the end of the Permian some 139 million years later. All goniatites possessed an external shell, which is divided internally into chambers filled with gas giving it Buoyancy during the life of the animal. An open chamber at the front of the shell provided living space for the goniatitid animal, with access to open water through an aperture. The general morphology and habit of goniatites was probably similar to that of their later relatives the ammonites, being free swimming and possessing a head with two well developed eyes and arms (or tentacles). Goniatites is a genus of extinct cephalopods belonging to the family Goniatitidae, included in the superfamily Goniatitaceae. Beyrichoceras and Cravenoceras are among related genera. Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: †Ammonoidea Family: †Goniatitida Genus: †Goniatites
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