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  2. White River Oligocene Prep - Leptictis

    Find someone with a 3D printer. Scan the right zygo, reverse the image, and print a perfect left zygo. This is going to revolutionize fossil prepping.
  3. Is there a level of classification in fossil labeling below cf.? E.g. I have a unidentified tooth similar to a tyrannosaurid, I'm not comfortable labeling it as cf. Tyrannosauridae indet. as it lacks diagnostic characteristics. However, I think that's still a possible family due to its size and morphology. If I don't want to call it cf. Tyrannosauridae indet. or Theropoda indet., what can I label it as? As I understand, the surety of classification goes from: Tyrannosauridae indet. > ? Tyrannosauridae indet. > cf. Tyrannosauridae indet. Can I write something like: Fossil tooth Probably Tyrannosauridae indet. 66.8 - 66 Ma | late Cretaceous Hell Creek Formation Montana, USA
  4. New Caterpillar in Baltic amber

    Thank you for sharing. Very impressive and interesting!!!
  5. 400 Million years in 4 hours

    Waldhof - 12 Million years I have not presented this formation before on TFF. The Rollsdorf-formation (= “Schichten von Waldhof”) is lower Sarmatian/Serravallian in age and composed of various coarse to very fine grained clastic rocks (gravel to clay). It contains a few thin coal seams (see Bk = lignite on the geo map), and some beds contain abundant fossils, mainly gastropods. I have not discovered the visited site myself, I followed a paper from 2001, and the fossils of this formation are known since 1897. I have visited the site one times before, in September 2017. For a report of this first trip, with many pics and literature, see (external site, in German): Waldhof - September 2017 It’s a typical mudflat-fauna and some papers say, the Sarmatian sea was brackisch, some papers say, it was not. However, the fauna is quite similar to the intertidal fauna around St. Josef, but about 3 Million years younger. The most abundant species are considered to be the same: Granulolabium bicinctum Terebralia bidendata Vitta picta But they do not totally look the same: These younger Granulolabium have more pronounced knobs than the older ones; and the Vitta are generally larger and are more similar to each other than the older ones around St. Josef. For comparison see: Vitta picta - St. Josef And there are also some extra, quite abundant species at Waldhof: Very small mud snails like Hydrobia and Rissoa. Enough theory! Lets go: On the way, still near the parking spot. Where is the fossil site? Again: WHERE IS THE FOSSIL SITE!!!??? Be patient, here it is, just two steps away! It’s a very, very small creek with some exposures in the creek itself and some at the banks. Some fossils were already lying there: Situation as found, you can see some Granulolabium and, a total surprise, a muricid was also waiting for me just to be picked up. These are not super-rare, but I have not found any during my last visit. A little digging in the banks with a screw driver promptly resulted in a nice matrix specimen with a Vitta picta. Height of red object is 12 cm. Recovered matrix specimens. Enough is enough! Continued...
  6. 400 Million years in 4 hours

    This report is just to show off what you can see and find within a very short time, (mostly) only the most abundant fossils are shown. Ölberg- 395 Million years I have already presented the common fossils of the Eifelian Plabutsch-formation in these two topics: Plabutsch-formation 1 and Plabutsch-formation 2 A guide to the Ölberg site is here (external site, in German): Ölberg - Plabutsch-formation During this trip, I took just a few pics of the abundant Favosites; these are just lying around. Parking at Ölberg. Forest road with boulders of Favosites (A, at Ölberg. Large boulder “A”, entirely composed of Favosites, the most abundant fossil of the Plabutsch-formation. Size of block is about 40 cm; I placed it on this tree stump this spring... Small boulder “B”, composed of Favosites, size is about 25 cm. I took this block with me, but maybe I will bring it back… Continued...
  7. Struthiomimus Vertebrae

    Thanks guys! I had the original realization that I probably had ornithomimid vert when I saw a pic of a larger one from the Tuscon Show that @Troodon had posted.
  8. Possible jaw bone

    It's difficult to deduce the identity of an animal based on one incomplete bone, especially one that doesn't appear to have any defining features. I would say the best ID one could get is an indeterminate herbivorous dinosaur (the most common are Triceratops and Edmontosaurus).
  9. 400 Million years in 4 hours

    400 Million years in 4 hours The small-scale geology of Austria makes it possible to observe and collect invertebrate marine fossils from a time span of nearly 400 Million years (Ma) within a few hours and at a distance of only about 10 km: - 395 Ma old Devonian (Eifelian) corals - Ölberg - 80 Ma old Cretaceous (Campanian) rudists – St. Bartholomä - 12 Ma old Miocene (Serravallian/Sarmatian) gastropods - Waldhof I did this special hunting trip west of Graz at October 22, 2019 as a "feasibility study". The youngest and oldest fossils can simply be picked from the ground (or photographed); the “middle-agers” require some searching; I succeeded to find a few good specimens within one hour. Weather was perfect with nearly 25°C (!). Simplified geological map of Styria with the visited area west of Graz (red rectangle). Geological map of the visited area (1:50.000), composed of two adjoining map sheets. Red numbers denote visited fossil sites (and their age in Million years). Note the fossil sign in the blue formation in the upper middle of the map. This is the upper Devonian Steinberg-formation with goniatites. These fossils are not abundant, though, so I have never explored this hill… Topo map of the area. Red numbers denote fossil sites, A and B are sites of landscape pics. Just to show off some landscape: View from point “A” in Steinberg towards west. K = Kreuzegg mountain (570 m, Campanian St. Bartholomä-formation) at a distance of ca. 5 km. A = Plateau-like Amering mountain (2187 m, high-grade metamorphic rocks) at a distance of ca. 40 km. View from point “B” at Kreuzegg mountain towards north to southeast. Pano composed of 4 individual pics, spanning about 140°. Labeled mountains and hills in the background are: S = Schöckl (1445 m, Devonian epimetamorphic limestone) at a distance of ca. 20 km. P = Plabutsch mountain (754 m, namesake of the fossil-rich Eifelian Plabutsch-formation) and B = Buchkogel mountain (656 m), both at distance of ca. 10 km and located immediately to the west of Graz. Ölberg and Waldhof sites are between P and B, but not visible. Note the about 1000 m high, largely deforested mountains at the left side of the pano (Mühlberg, Pleschkogel etc., lower Devonian, dolomitic Flösserkogel-formation). The severe deforestation of these hills is due to a strong storm in 2008 (“Paula”). Continued...
  10. French Mosasaur Teeth

    Ok, but only if i find back the both its mouth and the end of its digestive apparatus. N'est-ce pas @Coco ?
  11. Today
  12. @FranzBernhard @ynot Thank you. Hematite seems the most likely candidate given the geology of that immediate area. I had just taken some 40x magnification shots and it definitely is botryoidal. Given that recommendation I did some research and found the possibility of Turgite a mixture of hematite and goethite. Apparently there is an entire hillside exposed somewhere in New Mexico.
  13. If you don't mind cleaning and sorting matrix, I can send you some bulk samples from a few areas. You'll need a screen to catch the hard bit as you wash the clay away. PM me your address if you are interested.
  14. New Caterpillar in Baltic amber

    So cool.
  15. Help with identification

    Are we sure that "spur" is part of the bone? It looks like it might be some mineral growth attachment. Not the same color and attachment point does not blend in with original bone like I would expect deformity growth to do.
  16. Possible jaw bone

    I purchased two bones from a seller in Wyoming about 10 years ago and cannot figure out what animal they are from. It's about 3 inches. Can anyone help? Bone #1 is pictured below:
  17. My Trilobite Drawings

    Thanks, Al!
  18. Isn't it a Tarbosaurus? T-Rex's turn is yet to come
  19. Here you go all yours questions answered
  20. My Mazon Creek Finds

    Very nice! Open concretions collection pays off. No need to wait by the freezer to find nothing
  21. Struthiomimus Vertebrae

    "The first one seems like it would be from a juvenile as it's mostly complete but very small at just under an inch long. The other is missing an end, but is a bit larger at about an inch and a quarter in length."
  22. New Caterpillar in Baltic amber

    Fantastic!
  23. Amber is the key to success. What if a T-Rex was preserved in amber - all questions of plumage, lips, coloration and small hands would be resolved
  24. Help with identification

    Thank you TqB. I have looked at lots of pictures but I just can't find anything that seems to match. Hopefully someone will know what it is.
  25. Struthiomimus Vertebrae

    Hi, And the size is... Coco
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