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Showing results for tags 'eocene'.
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Hi can you help me with this ,I went to a Eocene area to the east of Riyadh and found a very small ? shark tooth ,it is incomplete small , 4 mm long tooth . what could it be ?
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Hi can you help me with this ,I went to a Eocene area to the east of Riyadh and found very small ? shark tooth ,it is incomplete small , 6 mm long tooth . what could it be ?
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Hi can you help me with this ,I went to a Eocene area to the east of Riyadh and found small ? fish teeth ,they are small ,3-6 mm long . what could they be ?
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Hi can you help me with this ,I went to a Eocene area to the east of Riyadh and found a fish teeth? ,it is small , 2.5 cm long . what could it be ?
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I found this vertebrae In the Louisiana eocene Cain River formation. I think it’s a Zygorhiza any information would be appropriate .
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Hi can you help me with this ,I went to a Eocene area to the east of Riyadh and found small shark teeth ,they are very small , it is 13mm & 14 mm long . what type of shark they could be ?
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Hi can you help me with this ,I went to a Eocene area to the east of Riyadh and found a small round fossil , it looks like a fish or shark vertebrae , it is 5mm by 5mm , thin 1 mm thick . what could it be ?
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From the album: Eocene vertebrates of Ukraine
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From the album: Eocene vertebrates of Ukraine
8 years of collecting in that area, and finally a cowshark symphyseal -
Hi everyone! Holidays mean more time to photo and post. As previously mentioned in my previous post, I am finding a lot of fossil impressions and voids in chert and mudstone on a small artist residency and farm in Kingsbury, Texas, in Guadeloupe County. And some petrified wood. Most of the casts I find are pelecypods and some gastropods; however I am finding some other stuff, some of it total mystery. This time I will post the mystery items first. Let me know your thoughts! This first mystery (3 views) has tight incised lines around the darker shape - most evident in central photo. The next item, below, has lots of impressions. The closeup on right shows a spiral on left side, is that a worm, or a gastropod internal cast/mold? I think the horizontal cavities on right of closeup are some kind of coral? Here's some coral ... or petrified wood? (two images Photoshopped together) And also...the below is super interesting...at first I thought it was just a chip, or a shell impression. But starting to think insect wings! At first I thought this could be a bryozoa (left photo below), but I think it is more likely a worn pelecypod impression, re like the typical one on the other side other rock (right photo). And here's some pet wood, various types And bone? Or coral? I keep thinking bone because of smooth sides.
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References: Reuss, A.E. (1844) Geognostische Skizzen aus Böhmen. – Bd II: Die Kreidegebilde des westlichen Böhmens, ein monographischer Versuch. – C.W. Medau et Comp., Prag, VI+304 pp. Agassiz, L. (1838-1844) Recherches sur les Poissons fossiles. – Tome V, Part 2, Petitpierre, Neuchâtel: 1-160. Laube, G.C. (1901) Synopsis der Wirbelthierfauna der böhm. Braunkohlenformation und Beschreibung neuer, oder bisher unvollständig bekannter Arten. – Abhandlungen des deutschen naturwissenschaftlich-medicinischen Vereines für Böhmen “Lotos”, 2 (1): 107-186. Gaudant, J. (2008): Complements to the anatomical knowledge of Cyclurus macrocephalus REUSS (Pisces, Actinopterygii) from the Eocene of Kučlín, Bohemia, Czech Republic. – Acta Mus. Nat. Pragae, Ser. B, Hist. Nat., 64(1): 3-7, Praha. ISSN 0036-5343.
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This fish fossil is from the Green River Formation, These fossils are enclosed in a thin layer of shale. The vertebrae are 33mm long, possibly Knightia? On the left upper edge of the rock is a fin. I had a x-ray taken and I see several straight pin shaped ribs? However they are a poor match for ribs described in "Paleontology of the Green River Formation, with a review of the fish fauna" (Grande, 1984). These "ribs" are very straight. There is also the central rod-like thing, which is perhaps plant material? I thought a X-ray would review hidden secrets, but it hasn't really adding anything I couldn't see with my naked eye. This forum is a joy to browse. I'm very appreciative of the responses I've gotten from my previously ID requests so far. I am certainly learning! Any ideas as to what I'm seeing?
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Wilcox Group, Texas (Guadeloupe County) finds and mysteries
KingsburyFossilHunter posted a topic in Fossil ID
Hi everyone! For the last few months I have been finding lots of fossil imprints in mixed chert cobble on a artist residency/farm in Kingsbury, Texas near Seguin (in Guadeloupe county). They are digging up some of the cobble/gravel to line the roads and walkways on the farm, which means that everything gets spread out nicely! Plus there is the 'quarry' itself. The USGS map says that the area is Wilcox Group, undivided, and/or Willis Formation, and I am looking at mudstone, chert, a little bit of sandstone, gravel, some petrified wood. In terms of age I think it matches up with Eocene but could go back a little farther, especially since some stuff may have been deposited by a nearby creek. For Wilcox Group USGS says AGE_MINPhanerozoic - Cenozoic - Tertiary-Paleogene - Early-Eocene AGE_MAXPhanerozoic - Cenozoic - Tertiary-Paleogene - Late-Paleocene. I am using the two classic Texas references to ID general fossil type, Matthew's Texas Fossils and also Finsley's A Field Guide to Fossils of Texas, and also deeply perusing thefossilforum.com site. I think the below is a stromatolite, then the rest are pelecypod impressions of various types. Except for that last photo in this post, I am guessing that is just a sideways cross section. I am curious as to your opinions... it has been really fun to look and to find these! I will add more images in subsequent posts.
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I would like some help identifying some trace fossils. These are all from the same site from the "Soldier Summit Fossil Track Horizon" area in the Eocene Green River Formation. My grandson and I collected these for his science fair project, so any insight is welcome. Fossil A is obviously a tail feather. It's length is 55mm. Fossil B has shore-bird tracks, but please notice the insect track in the right side. What kind of insect could have made this? Fossil C and D are different sides of the same rock. For side C, I initially thought that this might be bird tracks, but I they don't look anything like the classic pattern in the sample B. Fossil D is covered with fine lines, perhaps some worm tracks? Close-ups E and F zoom in on these tracks. Close-up E shows a mottled pattern on the left, perhaps an alge mat? On the left, a wavy track. I don't know how a worm could create this pattern. Close-up F shows fine lines.
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Hi Everyone, I'm a new member. Thrilled to be part of the forum! You will probably see me post things about fossil collecting in the mid-Atlantic. Looking forward to learning more about the hobby from everyone! Cheers Matt
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From the album: Vertebrates
Cyclurus macrocephalus Reuss, 1844 Bowfin Late Eocene Kučlín Czech Republic Length15cm -
From the album: Vertebrates
Palaeochiropteryx tupaiodon REVILLIOD, 1917 Middle Eocene Lutetian Messel near Darmstadt Germany -
What you guys think ? Its from eocene reefal complex.
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So i got this calcareous limestone and it include type of gastropod and bivalve fossils and other types which i couldn't identify. Specimen from a reefal complex. What you guys think about flower like texture ?
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Happy Thanksgiving everyone! Found this in the Neuse River in North Carolina, (Eocene and Cretaceous) was thinking it is a partial tooth , fish or croc ? Your thoughts? Scale is mm. Thanks.
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Ok, this is actually yet another crab prep. I figure its a round rock so I named it the way I did cause so many folks think a round rock is a fossil dino egg. Anyways, I bought 27 crab concretions from a friend of mine just a short time ago and went through them today. I picked out this one just because of the size. Its a monster! Im used to the ones that are about the size of a baseball. This one is more like a soccer ball. Quite heavy too! I spent 2 hours on it already and have another 7 or 8 hours or so of removing rock. Quite boring, but I think I 'read' this one right and this way is better than 'WHACKING' it with a sledge hammer. Time will tell. If it turns out to be a dud it will be a huge waste of time but sometimes doing this is a gamble. Ive always said, "if you dont gamble, you dont win". These cost me $530. Believe me, Ive lost many many times. But with this crab prep thread you can go through all the ups and downs with me. Hopefully more ups than downs. Dont want anyone seeing me break down and cry. I cant prep like I used to and this is gunna take some time being soooooooooo much rock to remove, but once down to the crab, either the fun starts,,,,,, or the heartbreak starts? Gunna be interesting no matter what. So,,,,,, the count so far is: 2 hours I just looked at the first pic. Looks smaller than it actually is. this rock measures 6 inches across.
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Ive been wanting to get some fish done for a few years now. I have about 5 days of good weather left so since I got the abrasive unit up and running I started on this one. Its a Serrata from the Green River Formation and is in some real nasty rock. Its slow going and I figured I would use 50/50 bicarb/dolomite and cut back on the dolomite when I got to the 'thinner' things. Ha!!! I still had some of the 50/50 when I got to the gut and some of scale covered areas both above and below the spine and low and behold, it worked for those areas too!!! This really tuff hard rock makes for some really hard bones and such!!! I,,,,,,,,, am a happy camper. I still have a few hours left to finish this up, but its turning out purty dang good. RB
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https://www.livescience.com/63892-owl-fossil-daytime-hunter.html
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I collected several of these small round balls in limestone (shale?) from the Eocene Green River Formation. The location is Tucker, Spanish Fork Canyon, Utah. The diameter is about 13mm, about the width of my small fingernail. When these are broken open, I see that the sphere is packed with 0.2mm white "crystals". I say "crystals" because they look like calcite to me and some have small (0.05mm) hollow spaces. The crystal density is least in the center of the sphere. FYI, the limestone does show small amounts of black organic fragments. In the field, these look very much like a fossil, but under the microscope, the cross-section looks like it is geological in origin. Any ideas?
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Yeah, I know, we are all sick and tired of these fossil crabs in concretions prep threads. Too bad, as my buddy Kris says. Here is a rather odd rock in the sense that the outer layer is not only really soft, but full of little tiny black particles? Not a clue what they are. Ive never seen then before. If there are any tippy tippy's going into this soft layer Im afraid they will be gone? Also, see that little piece of leg on the back right side, It is not in the right place or its trying to fly a kite. Really high in the rock compaired to the carapace. I cant tell if its leg #1 or 2, but this crab is already scarying me. Right now this tells me that the 'rear end' is either not there or has problems? Time will tell.
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