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  1. Conley

    ID Help

    Curious if anyone has any ideas as to what these might have came from. Found this piece in SE Colorado that has tons of shark teeth but these are way different than anything we have found so far.
  2. fossil35

    Florissant Fossils Help

    I found a few in the last bit that I wasn't sure what they maybe. Wanted see if anyone know what they where or if any are good enough to keep. #1 (wasn't sure thinking plant or moss) #2 (seed???) #2 (different angle/closer) #3 (first half) #3 (first half closer) #3 (second half) #4 #4 (closer)
  3. jawestad

    Egg? Identification

    This was found in south Eastern Colorado at an estate sale. Friends have told me that it's a fossilized egg! Let me know your thoughts please!
  4. fossil35

    Florissant Finds

    Posting some of the fossil was finding from Florissant thought was nice. Been having fun looking through shale, hopeful will found more later. #1 (Thinking it maybe moss) (it was to bad the better/darker half was paper thin and broke to pieces but this was still nice) #2 (Thinking its seed or fruit) ( like the first photo to bad part broke off) (next photo is second half is full) #2 (second half thinking seed or fruit) #3(nice little insect) #4(nice weevil) (second half was glued near first) #5(nice insect)
  5. fossil35

    Help Id insect fossil

    I found an insect fossil and wasn't sure of what kind of insect it was. It was from Colorado Florissant. It was to bad that it was on a very small piece, so the back end was missing ( as well the first half is very rough and broke). But the good half was nicely detailed. Will post both halves and different zoom of good half. #1 (first half) (this is the rough/broke half) #2 (second half with measure) #2 (second half different angle and closer) #2 (second half closer on head)
  6. fossil35

    Fossil Spider?? ID please

    Found a fossil from the Florissant Colorado shale I'm thinking is a spider been looking for. It is very faded but wanted see if others thought was a spider too or if its something else. Was sure remember book saying spiders had bad preservation, so thinking maybe why so faded. Posting both halves. #1 (first half) #2 (second half) #2 (measure second half) If this would be a spider is it still good to spray it to protect? or could there be a problem as its faded a lot?
  7. fossil35

    Is it a fossil

    Had a question of if anyone would know if piece below is a fossil or not? If is fossil, maybe what kind would be. A split had a rounded bump look and left an imprint on the other half (imprint half was hard to focus well with the different level of high). Its from Florissant. Wanted make sure so don't throw anything out that could be good but was hard tell if was even a fossil or not. #1 #1(from side) #2 (other half) #2 (second half different view)
  8. alittledog

    Hello All!

    Just saying hello. Been doing adventures with my family in Colorado, but now branching out on taking my special needs son on further out trips. Once I figure out where to post, I’ll post less detailed places we hunt closer to Denver.
  9. Opabinia Blues

    White River Teeth ID

    Hello, everyone, Lately this summer I’ve been doing a bit of casual fossil collecting (with explicit permission!) on some land that a very close family friend owns in Weld County, Colorado that has a lot of exposure of the White River Formation, and I’ve collected a sizable amount of material including some pretty awesome finds. Being an amateur, I need some help identifying some of the fossils I’ve collected. Since the forum has a photo upload limit per post, I’ll be making a few threads for different finds, I hope that is ok. The following are two teeth that I found very near to (but not attached to) a piece of jaw bone. My current hypothesis is that these two teeth are associated with the same jaw. From Weld County, CO. Though hard to tell from the pictures, tooth #1 does have a distinctive ridge at the apex of the crown, though this could just be wear. Tooth #2 appears only to be a fragment, and a small fragment at that, and so may or may not be identifiable unless it turns out they’re from the same animal and the first tooth is identified. #1: #2: Thanks!
  10. I found these rocks on my ranch in El Paso County Colorado. I think they could be fossils, not sure of what type of animal. However one looks like a bone that turned to rock. Any help in identifying would be appreciated!! Item 1 Item 2
  11. I found these rock formations while exploring a creek bed near where I live. I am not sure if these are all petrified wood. Any help would be appreciated in identifying these rocks! Thank you so much!
  12. Found this in Colorado where I live, it is brown, the top is smooth and feels polished. There are tiny cracks and holes. They are rough inside Wanted to know what it is, thought maybe a Gastrolith? It was found in a horse pasture laying on the ground. Any help would be appreciated!
  13. fossil35

    Insect id help

    I found an insect that needed help with. Was thinking at first it was a beetle, then wasn't sure. The back made me think beetle but then the head seemed like ant or maybe I'm just way off. If anyone knows the id of the insect or just if its beetle, ant or another type of insect not thinking of would be thankful any help. Will post both halves. #1 ( first photo measure)( first half) #1 ( first again little closer turned) ( first half) #2 (second half)
  14. Had a fossil I found from Florissant Colorado shale needed help with. Wasn't sure if it was just plant matter or a seed of some kind. Got both halves will post. #1 (first half) #2 (second half)
  15. Prosymna89

    Fossil?

    Found on the ground and my parents place colorado 6300 elevation San Juan mountain range can someone just tell me what this is a fossil of? Is it worth anything?
  16. connorp

    Florissant Beetle to ID

    Curious if anyone recognizes this beetle (?) from the Florissant Formation (Eocene; Teller County, Colorado). I had a look through "The Fossils of Florissant" (Meyer 2003) but did not see an obvious match.
  17. Witte1

    ID Fossil

    I found what looks to be a turtle shell in a dried river bed in Colorado. Please ID.
  18. Found this in a cliff side in Colorado I am not sure but it looks like a mollusk or Crinoid bulb, DINOSAUR EGG!😆 Thanks!
  19. Mochaccino

    A couple Green River Fm. Insects

    Hello, I am looking for confirmation and if possible specific identification of these two insects I have from the Eocene-aged Green River Fm. of Colorado. 1. Labeled as "Mosquito" 2. Labeled as "Mantis"
  20. luckyhound2020

    Tooth? Claw? Egg? Anyone know?

    Hey there! This was found in southwestern Colorado, less than 100 miles from the Utah border, and I was wondering if y'all could tell me what it is or might be. Its not completely symmetrical, one side is a little thicker than the other. If you need any more details or anything, let me know please. This is my first post so forgive me if I didn't give enough info. Anyways, It would be cool to know what it is. I think a tooth :-) Thanks!
  21. Linked is a 3D model of a nearly perfect Hoploscaphites nodosus ammonite. Models can be viewed using this website: Online 3D Viewer or through other software. This is a 3D model of an actual fossil and is not a "recreation", but since my last upload was moved here this is where I will upload the rest of my 3D scans. If anyone else has any good ammonite or inoceramus finds from Colorado please share them with me and tell me a little about them. I've been reading some of Bill Cobban's papers about the invertebrate paleontology of Colorado and I've gotten really interested in what can be found around here. Thanks! -Sam 1195980117_Hoploscaphitesnodosus-Kprl(1)-1.glb
  22. Models can be viewed using this website: Online 3D Viewer or through other software. These are two very nice examples found in the Rocky Ridge Sandstone in Larimer County, Colorado. I am not able to upload many files at a time but I will be making posts occasionally with models of either inoceramid bivalves or scaphite ammonites. 123223080_Inoceramus-Kprl(2)-9.glb
  23. Being a Colorado native, I have taken multiple trips to the public-access Florissant Fossil Quarry located near Florissant Fossil Beds National Monument in Florissant, Teller County, Colorado. This quarry provides fossil collectors fantastic access to the shale layers of the Florissant Formation, a late Eocene (Priabonian, ~34 million years old give or take) lagerstatte known for its diverse fauna of fossil insects, in addition to plants, gastropods, and very rarely vertebrates. Most fossils occur in very thinly laminated ashy grey shales. Other lithologies present include well-sorted tan course sandstones and well-sorted grey claystones. A lacustrine depositional environment is apparent, and though the Florissant Formation has previously been interpreted as the remains of a single large lake (the retroactively named Lake Florissant), it is now generally thought that deposition occurred across several smaller lakes, which of course shifted in their exact location throughout the period of deposition. This thread is for me to share some of my better quality (or more interesting) fossil insect finds from the Florissant Fossil Quarry, and to allow other people to share their Florissant insects. I intend on updating this thread as I make more collecting trips. Most insect fossils found at Florissant are of poor quality, however exceptionally beautiful specimens do crop up quite frequently. Regardless, identification even down to family level is usually very difficult, and some specimens I even have difficulty assigning to an order. Additional reading: https://bioone.org/journals/palaios/volume-27/issue-7/palo.2011.p11-084r/DEPOSITIONAL-SETTING-AND-FOSSIL-INSECT-PRESERVATION--A-STUDY-OF/10.2110/palo.2011.p11-084r.short Please note that at least for now picture quality is not ideal. I do not have the capacity to take good quality macro photographs, but I am doing the best that I can. The scale of the ruler is millimeters, magnification (when applicable) is noted. Order Diptera (True flies): Probably my best-preserved Florissant insect (and one of the first ones I ever found). Another fly. I'd like to be able to identify this one to family (and it almost certainly is identifiable to family) but I haven't been able to place it. This is a gorgeous fossil! Magnified 20X under a stereo microscope. Another gorgeous fossil fly. Possibly a gnat (suborder Nematocera), but I'm not 100% on this identification. Partial fly of indeterminate family, most of the abdomen is apparently missing. Both wings are preserved, the thorax and head are also nicely detailed. This is an example of a march fly (Family Bibionidae), probably the most common insect at Florissant. Many specimens (such as this one) are preserved without their wings. The head and mouthparts are very nicely preserved here, I feel shameful that I could not manage a better photograph. Crane fly, (Family Tipulidae). The preservation quality is not fantastic, but the gross anatomy can be easily made out (both wings, the abdomen, thorax, head, eyes, and even the halteres and some of the legs are present). Order Hymenoptera (Bees, ants, wasps, and relatives): A nice solitary bee (clade Anthophila). The details are not as high-fidelty as some other Florissant insects, but a nice complete specimen. Order Hemiptera (True bugs): Magnified 20X under a stereo microscope. A shield bug (superfamily Pentatamoidea). This is a really neat specimen because fossil Hemipterans aren't particularly common. Indeterminate Order: A large insect that I've never quite been able to place. Two wings are very faintly preserved which would normally be indicitave of a fly, but this specimen just doesn't look much like a fly otherwise. The antennae are interesting, it's a very large insect, and the tibia has an interesting flange. Unfortunately I can't seem to get a good look at the mouthparts (which has been very useful for me in the past for identification). Magnified 20X under a stereo microscope. At first I thought this might be an ant (family Formicidae) but under magnification the shape of the head is more suggestive of a fly. Very poor preservation, I'm not confident I'll ever get a solid answer here. Larvae: A nice plump fly larva, looks to me to be from a botfly (family Oestridae) or a relative. A very strange fossil. The segmentation and tagmosis definitely means this is an arthropod of some sort, and an insect larva is my current interpretation. Still, I've never seen anything quite like it. I've had a few people suggest to me this might be the abdomen of an earwig, but that's definitely not the case (earwig cerci do not look like this or articulate with the abdomen in this manner). Non-Insect Invertebrates: Just an example of one of the tiny gastropods that are common. It takes a keen eye to see them, but once you can recognize them you realize they're very plentiful. If you have some fossil insects from this locality in your collection, feel free to post them here too! Cheers!
  24. I am heading to Pagosa Springs Colorado next week and would love to do some fossiling. I have a few sites to check out but I was wondering if there were any day trip fossil hunt guides that were in the South Colorado area. I haven't been able to find any on web search, so if you know anyone who leads half day or day trips, please PM me! Thanks!!
  25. About a year ago I made a post where I made a post on the forum where I shared some of my more interesting fossil insects I had found at the Florissant Fossil Beds in Colorado. For those uninitiated, the Florissant Formation is an Eocene (Priabonian Stage, ~34 Ma) lägerstatte notable for exceptional preservation of plant and arthropod fossils. My original post can be found here: One of the fossils I showed off in that post was of an insect larva which I had interpreted as a fly (order Diptera) larva, speculating that it may be a botfly larva because it possessed setae which resembled those of a botfly. I had never been super confident in this interpretation, and over the last year I’ve showed the fossil to several knowledgeable friends, paleontologists, and entomologists. What has emerged is a different consensus that I am much more confident with (and is far more intriguing than what I had originally thought!): this fossil is in fact the dorsal view of a caddisfly larva (order Trichoptera). There are several anatomical characteristics present which I had failed to notice initially. To start, I was viewing the fossil backwards. I had interpreted that anterior end as the posterior end and vice versa. Once I had this corrected, it became clear that the insect’s head and thorax are both clearly definable and both eyes are visible on the head. Additionally, small portions of the legs are visible sticking out from the thorax as well. I originally did not see any legs which had informed my original interpretation, but in this fossil most of the legs are tucked underneath the body and not visible. Here’s the fossil. The anterior end faces to the left. Here’s a picture of a modern caddisfly larva sans its protective casing. It is oriented in the same fashion as the fossil, for comparison: Caddisflies are closely related to butterflies and moths (order Lepidoptera) but they have larvae which live in bodies of water. Many caddisfly species’ larvae build little casings out of silk and pebbles/debris to protect themselves, but this is not universal. The larva seen here is not within a casing, so it either died in a rare instance in which it was not in its case or it is of a species which does not build cases. Adult caddisflies have been reported from Florissant, as have fossils of isolated larval casings, but I was unable to find a description of a body fossil of a caddisfly larva. Not to say one doesn’t exist, they just seem to be obscure. So there you have it: a really interesting and unique find from this fossil locality. Just needed another half dozen or so sets of eyes to figure out what was actually going on there!
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