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Found 183 results

  1. Hello, this time, I will start with the end result : I am quite satisfied with the result ! The pillars are nicely preserved and the rudist is filled with sparry, white to orange calcite and contains some voids coated with tiny calcite crystals. The greenish batches consist also of calcite and are also well polished, but are finer grained and contain additionally some small quartz grains. These fillings may be related to the second filling event during redeposition of the rudists in this formation. For more info about that, see here: Some Rudists from St. Bartholomä The right section contains also a blob of fossiliferous limestone. More about the locally heavily bored shell - see below . Before I got this nice result, there was a decision - to cut or not to cut : It is a conical specimen with some ribs preserved and a large, interesting, vertical groove. A large blob of limestone is sitting at the top end of the rudist, but one pillar was also already visible there. Mostly due to the ugly limestone blob, I decided to cut the specimen near the end of the visible shell. The top part (AN4240) does not contain much shell, the section about 6 mm lower (AN4239) does. The vertical groove is a simple inflection of the shell. No clue, what caused it, no remains of any other shell are visible. But it may have been some kind of an obstacle there. The specimen was found in a steep, wooded area east of Kalchberg, at the lower end of an old vertical ditch, possibly a prospect for water. Some pieces of fossiliferous limestone were lying around, somewhat exposed by heavy rains. I dug with bare hands in the soil, and nearly immediately recovered the specimen above from the "rat hole" to the right of the pocket knife (first row): (At the upper left corner of the upper left pic, a rudist is sticking between tree roots. This rudist was already featured here: Rudist hunting (3) in St. Bartholomä) Yesterday, I visited this spot again and pulled out several more pieces of limestone and sandstone from this "rat hole" (about 200 pieces), again only with bare hands (second row). No large Vaccinites was found this time, put a few smaller specimens (third row): upper left: small Vaccinites specimen; upper right: small pseudocolony of Hippurites colliciatus; lower left: Hippurites nabresinensis; lower right: fragment of Vaccinites vesiculosus. Ok, not much to see on this sucking pics, so I will stop now . Thanks for looking, maybe you have at least enjoyed the polished specimen . Happy hunting! Franz Bernhard
  2. Campanian mosasaur tooth

    cześć Czy to ząb mosasaura? Hello Is that a mosasaur tooth? Campanian, Polska Size near 6 mm
  3. colorful belemnites

    I wanted to share a few belemnites in my collection, personaly I think they are a bit of an underrated fossil and could use a little more attention. They can be very beautiful and colorful and of course they are cephalopods Belemnites from Eben-Emael ( Belgium ) Maastrichtian: Belemnites from the area of Mons ( Belgium ) Maastrichtian: Belemnites of the area of Mons (Belgium ) Campanian (2 brachiopods infiltrated the picture )
  4. Hadrosaur Humerus Repair/Prep

    I recently got this lovely mess of bone, which is a mostly complete hadrosaur right humerus that only requires some assembling. I actually bought this with the idea that it might be a fun project. But then it broke even more in the shipping. So I have my work cut out for me. It's from Judith River formation, Montana. It's hard to tell at the moment, but it seems to be a rather slender humerus. So that would make it more likely to be from the saurolophinae subfamily. But I will look into that some more when I have it assembled. So I will be doing lots of reassembling on this piece as well as prepping away some excess matrix that's still present. Besides the obvious problems, the bone itself is actually in very nice condition with some really smooth cortical bone as well as some lovely visible muscle scars. This is how it looked when I first opened it. Quite a mess. Also a drawing of what it should look like in context. And here I have slightly ordered the pieces. There's 5 big main pieces, three medium pieces and a whole bunch of tiny chunks. One of the bigger pieces that includes the ulnar and radial condyles. The shaft of the bone has had a pretty bad recent fracture. This is also where most of the smaller pieces come from.
  5. Another completely unknown to me from the Campanian St. Bartholomä-formation, Gosau-group, Eastern Alps: They were found in a polished slab of one of the typical fossiliferous limestone clasts of the Rudist-bearing "Knödelbrekzie" of this formation. There are many of these unknowns in this specimen, but not so well preserved as (A); they are mostly only fragments and also often strongly recrystallized (below C). The two elongated, greenish, inhomogeneous blobs in the right part of the specimen seem to be the same, containing crushed and poorly preserved fragments similar to (A). It could be, that there is some branching involved. Maybe this is also the case with the two green, interconnected, circular blobs to the right of the elongated blobs. One of these circular blobs contains remnants of the fossil in question. One of the unknwons has some corallite-like structures (C), but I don´t think, its a coral. However, there seem to be also some real corals in this specimen (D). I am totally at a loss, what A, B, C etc. could be. Possibilities see title, but it could be even something different. Every hint is appreciated, it´s ok if you only know the phylum . Remark: All of the phyla listed in the title are know (mentioned, not described) from similar clasts of the Campanian Wietersdorf Gosau-sediments in Carinthia. Many thanks! Franz Bernhard
  6. First of all: The book about the Coniacian-Santonian corals of Rußbach-Gosau, Austria, by Löser et al. (2019) is printed. It can be ordered at: http://www.korallen-kreide.de/index.html Its a must-have for all people interested in fossil corals! And: The abridged English version is also ready for download there! And now to my first application of this important milestone work: During my searching and digging at point 36 west of Kalchberg, St. Bartholomä, Styria, Austria, at 07/04/2019, I found also a piece of limestone with small, regular voids/holes/tubes. After cleaning at home, some axial ripping was visible in a few of the tubes. Good sign!! Could be another phaceloid coral colony! After cutting it was clear: It is!! And it is in some parts rather well preserved, the best specimen of this type so far. According to the work above, it seems to belong to the genus Procladocora. Four species of this genus are described for Rußbach-Gosau: P. gracilis, P. aff. exiguis, P. formosa, P. sp. In some corallites, septal insertion of 6 / 6 / 12 can be observed. The maximum outer diameter of the corallites is about 3 mm. This would place this specimen within the species P. gracilis. But the age is different and the occurrences are geographically about 200 km apart. So it is better to stick to Procladocora sp. Thanks for looking! Franz Bernhard
  7. Strange NJ Cretaceous Fish Bone

    Hi everyone, I have this partial fish bone from the Late Campanian of New Jersey, 72 Ma. I have never seen this type of bone structure before, but for some reason it reminds me of some type of rostrum (billfish?). It is a little over an inch at greatest dimension. Any ideas are appreciated!
  8. Hi, Some weeks ago, I found those spatangoid echinoids in my usual Upper campanian/Lower Maastrichtian hunting zone of SE of Pyrenees: I think they fit well with Diplodetus brevistella, as shown in http://www.echinologia.com/galeries/micrasteridae/index.html#diplodetus But, I found no other references of Diplodetus in the Pyrenees, and hardly in distant zones of Spain, which makes me doubt (Diplodetus is a genus mostly found in Northern Europe)
  9. Aristotle's lantern ?

    Hi, I found this crushed echinoid in an Upper Campanian/Lower Maastrichtian stage of the Pyrenees. "Not much of a piece", I tought (likely a Micropsis or a Phymosomatoid). But I wonder if this can be its crushed Aristotle's lantern: Close-up: The other side:
  10. Aguja Formation

    Anyone know what these two fossils are? They're from the Aguja Formation of Brewster County, Texas.
  11. Campanian Stromatoporoid

    Together with these two coral colonies http://www.thefossilforum.com/index.php?/topic/96001-corals-10-11-from-the-campanian-st-bartholomä-formation-styria-austria-gosau-group-eastern-alps/ I "discovered" also this specimen during my last visit at point 25, east of Kalchberg, in St. Bartholomä. "Discovered"? - I have found this specimen about a year ago, but did not take it with me - "It´s just a mineral". As I have not found much during my last visit, so I took it with me this time... After cleaning, I saw a somewhat faint wavy lamination - "Ah, some kind of calcite deposit"... Inspection with a hand lens revealed a tiny mesh or sieve structure in some parts - "Oh, that´s interesting"... Now I asked my local fossil expert. After some pondering he said: "This looks like a stromatopora from the nearby Devonian Plabutsch-Formation!" A quick look at his voluminous library revealed, that there indeed exist Cretaceous stromatoporoids, with nice names like Actinostromaria (compare with Paleozoic Actinostroma). I don´t think, this is an Actinostromaria, but we are rather sure, that it is a Cretaceous stromatoporoid. What do you think? Thank you very much for your opinion! PS, I found also this interesting diagram, from Wood & Reitner (1988). See also: http://www.thefossilforum.com/index.php?/topic/94175-fossil-ball-campanian-st-bartholomä-formation-gosau-group-eastern-alps/ Franz Bernhard
  12. Hi, I would like to identify this foram, it was collected in the upper cretaceous (campanian) mudstones
  13. My hunting at point 25 east of Kalchberg at 05/16/2019 did not yield any good rudist. However, two coral colonies were found. Now I have a total of about 20 from this formation. This one is very small, poorly preserved and has a very, very low contrast (already strongly enhanced). It has some similarities to that one, but only remotely: http://www.thefossilforum.com/index.php?/topic/87677-coral-3-from-the-campanian-st-bartholomä-formation-styria-austria-gosau-group-eastern-alps/ Corallites seems to have a diameter of about 1.2 mm. I do not expect any definitive answer , just showing it off . Thanks for your interest! Franz Bernhard
  14. The next two corals from St. Bartholomä... I collected this specimen nearly a year ago. Thought, it has some kind of borings. But I was a little bit confused, because most of the "borings" or tubes have a regular and tight, axial ornamentation. Polished cross sections revealed not much, but a few corallites (A, B, C). One of the tubes at the margin of the specimen shows some "shell" material with ornamentation on both sides (D). The left side is in contact with younger sediment, the right side with fossiliferous limestone. On the surface of the specimen, no shell material was observed within the tubes. Just a few days ago, I recognized a corallite cross section on the surface of the specimen with some fuzzy septa (X). In conclusion, I think, this could be the outer cast of a phaceloid-dendroid coral colony with nearly no "shell" material preserved - just a cast. In the Gosau-group, genera like Procladocora, Cladocora, Calamophylliopsis look somewhat similar. Thanks for your interest and opinion! Franz Bernhard
  15. Hello! Another colonial coral from St. Bartholomä. Contrast is poor and that´s the best I can to with my scrappy scrap. I think, I have not found such a coral before in this formation. And its the second largest colony I have found so far there. My guess is, that it could be Astraeofungia (g, h) or Dimorphastrea (a, b), all pics from Löser et al. (2015). But I am very probably wrong... Thank you very much for your help! Franz Bernhard
  16. I frequently come across golfball-sized concretions in the marine sandstones of the Late Campanian Bearpaw formation exposed at Lake Diefenbaker, Saskatchewan. Nearly all have small coalified fossils inside, ranging from fish bones to decapod fragments, wood chips, and all other manner of organic detritus. These remains are often difficult to identify (certainly beyond my ability, anyway), typically because they are either too crushed to be recognizable, or have been split on a bad plane. The following photos shows one of these nodules collected last weekend, that caught my eye with its regularity. As you can see, there is a small row of mostly uniform nodules inside, with thin sandstone rinds discontinuous to the matrix, and filled with a black, coal-like mineral, the same which tends to replace other organic remains found in similar nodules. Any ideas? For reference, here are some other fossils found in similar nodules from a similar layer of the formation, including fish vertebrae and a decapod claw:
  17. This time a really odd ball from St. Bartholomä, Styria, Austria (West of Kalchberg, point 36). Collected 04/09/2019. Campanian St. Bartholomä-formation, Gosau group, Eastern Alps. The specimen was very dirty, thought it is just a round and smooth limestone piece, but haven´t found such a smooth piece there before, so I took it with me. After cleaning (but without any prep) and inspecting with a hand lens, I discovered, that the subglobular specimen of about 7 cm in size is covered over and over with tiny polygons, about 0.1-0.2 mm in size. So it is a fossil! But what? It seems to have two natural openings, a larger on (pic A) and a smaller one (pic B), with polygons all over the rims and also inside the rim of the opening (pic F). At the lower right corner of pic F you can see, that the polygons are in reality prismatic structures. Polygons are also covering large parts of the inside of the two openings. The prismatic structures can also be seen in some dimples caused by pressure solution. Any hints and suggestions are welcome! Many thanks! Franz Bernhard
  18. I have heard that it's not uncommon to find examples of the ammonite placenticeras meeki with evidence of supposed mosasaur predation marks. A certain example of mine has since stood out as a possible contender. This example comes from deposits of the late Campanian Bearpaw Formation, a unit that is already well known for its good preservation of late Cretaceous molluscs, including placenticeras meeki with the supposed predation marks. I know that there are competing theories about the origin of these marks, including abrasion by limpets or other gastropods, so I'm curious about whether any of you are in agreement that this conspicuous pattern is evidence that this particular placenticeras was chomped by a mosasaur. A note about the specimen - I somewhat foolishly decided that a fine grain sandpaper was the solution for getting rid of the stubborn bits of sandstone matrix and pyrite that clung to the nacre, so most of the surface, including the rims of the matrix filling the puncture holes, is slightly polished. Also unfortunate is the fact that this ammonite, on account of most of the internal chambers being completely hollow, smashed into hundreds of little pieces once the concretion containing it was split. Fitting these fragments back together is essentially impossible, and I'm regretful that the specimen was ruined slightly by not being extracted carefully enough, but thankfully there's still a significant amount of it that's still intact. If anything, it seems to be telling that the only part of the fossil that isn't hollow (and therefore more durable) is where the puncture holes are, given that these holes would have allowed water and sediment to enter the chambers they had breached. The chambers which did not fill with matrix, on the other hand, could not handle the stress of the concretion being split, and shattered. Anyway, the first photo here shows the first two holes. These are on the left side of the ammonite. Note that the nacre around the punctures is cracked, where otherwise it is smooth and unblemished. The right side, showing the third puncture hole. It is difficult to tell in the photo, but this hole is depressed slightly into the ammonite. The bit near the end of the tape measure could also be a hole, but it's difficult to tell with so much pyrite encrusting it. Finally, a front-facing view. I've added arrows to approximate the location of the holes on either side. Note the preservation of the nacre of the septum, and how much of it is still covered by pyrite. Note that the other end of the fossil has no obvious septa, leading me to believe that this fragment is from near the body chamber. So, thoughts? I know that the origin of this type of trace fossil is still somewhat contested in paleontology, and I'm really curious about what the forum's consensus will be.
  19. AN4161_AN4162

    From the album Hippurites colliciatus Woodward, 1855 from St. Bartholomä, Styria, Austria

    West of Kalchberg, point 36, collected 03/17/2019.
  20. AN4163_AN4164

    From the album Hippurites colliciatus Woodward, 1855 (Pseudocolonies) from St. Bartholomä, Styria, Austria

    West of Kalchberg, point 36, collected 03/17/2019.
  21. Hello, here is the next coral colony from the Campanian St. Bartholomä-formation in Styria, Austria (Gosau-group), collected 02/10/2019, west of Kalchberg, point 36. This coral colony is intergrown with limestone. There is a naturally weathered cross section and naturally weathered vertical section (but not much to see there). I have cut and polished one end and preservation seems to be not too bad. However, as usual, am rather clueless. I think, it has external pali, so it could belong to Hydnophoropsis? Many thanks for your help! Franz Bernhard
  22. A new publication on the lower member of the Aguja formation is presented in this paper. Indeterminate tyrannosaurid, dromaeosaurid, ceratopsid, and nodosaurid dinosaurs are represented as well as new genus and species of hadrosaur, which does not appear to be described in this paper but Im only reading the abstract https://www.sciencedirect.com/science/article/pii/S0195667118304361 Stratigraphy and vertebrate fauna of the lower shale member of the Aguja Formation (lower Campanian) in West Texas Thomas M.Lehman, Steven L.Wick, Alyson A.Brink, Thomas A.Shiller
  23. AN4155_AN4156

    From the album Hippurites nabresinensis Futterer, 1893 from St. Bartholomä, Styria, Austria

    East of Kalchberg, point 25, collected 02/27/2019. Crushed specimen with various sediment infill and quite nice contrast.
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