Jump to content

Search the Community

Showing results for tags 'cenozoic'.

  • Search By Tags

    Type tags separated by commas.
    Tags should be keywords or key phrases. e.g. otodus, megalodon, shark tooth, miocene, bone valley formation, usa, florida.
  • Search By Author

Content Type


Forums

  • Community News
    • Member Introductions
    • Member of the Month
    • Members' News & Diversions
  • Fossil Discussion
    • General Fossil Discussion
    • Questions & Answers
    • Fossil Hunting Trips
    • Fossil ID
    • Partners in Paleontology - Member Contributions to Science
    • Fossil of the Month
    • Member Collections
    • A Trip to the Museum
    • Paleo Re-creations
    • Collecting Gear
    • Fossil Preparation
    • Is It Real? How to Recognize Fossil Fabrications
    • Member-to-Member Fossil Trades
    • Fossil News
  • General Category
    • Rocks & Minerals
    • Geology

Categories

  • Annelids
  • Arthropods
    • Crustaceans
    • Insects
    • Trilobites
    • Other Arthropods
  • Brachiopods
  • Cnidarians (Corals, Jellyfish, Conulariids )
    • Corals
    • Jellyfish, Conulariids, etc.
  • Echinoderms
    • Crinoids & Blastoids
    • Echinoids
    • Other Echinoderms
    • Starfish and Brittlestars
  • Forams
  • Graptolites
  • Molluscs
    • Bivalves
    • Cephalopods (Ammonites, Belemnites, Nautiloids)
    • Gastropods
    • Other Molluscs
  • Sponges
  • Bryozoans
  • Other Invertebrates
  • Ichnofossils
  • Plants
  • Chordata
    • Amphibians & Reptiles
    • Birds
    • Dinosaurs
    • Fishes
    • Mammals
    • Sharks & Rays
    • Other Chordates
  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

Blogs

  • Anson's Blog
  • Mudding Around
  • Nicholas' Blog
  • dinosaur50's Blog
  • Traviscounty's Blog
  • Seldom's Blog
  • tracer's tidbits
  • Sacredsin's Blog
  • fossilfacetheprospector's Blog
  • jax world
  • echinoman's Blog
  • Ammonoidea
  • Traviscounty's Blog
  • brsr0131's Blog
  • brsr0131's Blog
  • Adventures with a Paddle
  • Caveat emptor
  • -------
  • Fig Rocks' Blog
  • placoderms
  • mosasaurs
  • ozzyrules244's Blog
  • Terry Dactyll's Blog
  • Sir Knightia's Blog
  • MaHa's Blog
  • shakinchevy2008's Blog
  • Stratio's Blog
  • ROOKMANDON's Blog
  • Phoenixflood's Blog
  • Brett Breakin' Rocks' Blog
  • Seattleguy's Blog
  • jkfoam's Blog
  • Erwan's Blog
  • Erwan's Blog
  • marksfossils' Blog
  • ibanda89's Blog
  • Liberty's Blog
  • Liberty's Blog
  • Lindsey's Blog
  • Back of Beyond
  • Ameenah's Blog
  • St. Johns River Shark Teeth/Florida
  • gordon's Blog
  • West4me's Blog
  • West4me's Blog
  • Pennsylvania Perspectives
  • michigantim's Blog
  • michigantim's Blog
  • lauraharp's Blog
  • lauraharp's Blog
  • micropterus101's Blog
  • micropterus101's Blog
  • GPeach129's Blog
  • Olenellus' Blog
  • nicciann's Blog
  • nicciann's Blog
  • Deep-Thinker's Blog
  • Deep-Thinker's Blog
  • bear-dog's Blog
  • javidal's Blog
  • Digging America
  • John Sun's Blog
  • John Sun's Blog
  • Ravsiden's Blog
  • Jurassic park
  • The Hunt for Fossils
  • The Fury's Grand Blog
  • julie's ??
  • Hunt'n 'odonts!
  • falcondob's Blog
  • Monkeyfuss' Blog
  • cyndy's Blog
  • pattyf's Blog
  • pattyf's Blog
  • chrisf's Blog
  • chrisf's Blog
  • nola's Blog
  • mercyrcfans88's Blog
  • Emily's PRI Adventure
  • trilobite guy's Blog
  • barnes' Blog
  • xenacanthus' Blog
  • myfossiltrips.blogspot.com
  • HeritageFossils' Blog
  • Fossilefinder's Blog
  • Fossilefinder's Blog
  • maybe a nest fossil?
  • farfarawy's Blog
  • Microfossil Mania!
  • blogs_blog_99
  • Southern Comfort
  • Emily's MotE Adventure
  • Eli's Blog
  • andreas' Blog
  • Recent Collecting Trips
  • retired blog
  • andreas' Blog test
  • fossilman7's Blog
  • Piranha Blog
  • xonenine's blog
  • xonenine's Blog
  • Fossil collecting and SAFETY
  • Detrius
  • pangeaman's Blog
  • pangeaman's Blog
  • pangeaman's Blog
  • Jocky's Blog
  • Jocky's Blog
  • Kehbe's Kwips
  • RomanK's Blog
  • Prehistoric Planet Trilogy
  • mikeymig's Blog
  • Western NY Explorer's Blog
  • Regg Cato's Blog
  • VisionXray23's Blog
  • Carcharodontosaurus' Blog
  • What is the largest dragonfly fossil? What are the top contenders?
  • Test Blog
  • jsnrice's blog
  • Lise MacFadden's Poetry Blog
  • BluffCountryFossils Adventure Blog
  • meadow's Blog
  • Makeing The Unlikley Happen
  • KansasFossilHunter's Blog
  • DarrenElliot's Blog
  • Hihimanu Hale
  • jesus' Blog
  • A Mesozoic Mosaic
  • Dinosaur comic
  • Zookeeperfossils
  • Cameronballislife31's Blog
  • My Blog
  • TomKoss' Blog
  • A guide to calcanea and astragali
  • Group Blog Test
  • Paleo Rantings of a Blockhead
  • Dead Dino is Art
  • The Amber Blog
  • Stocksdale's Blog
  • PaleoWilliam's Blog
  • TyrannosaurusRex's Facts
  • The Community Post
  • The Paleo-Tourist
  • Lyndon D Agate Johnson's Blog
  • BRobinson7's Blog
  • Eastern NC Trip Reports
  • Toofuntahh's Blog
  • Pterodactyl's Blog
  • A Beginner's Foray into Fossiling
  • Micropaleontology blog
  • Pondering on Dinosaurs
  • Fossil Preparation Blog
  • On Dinosaurs and Media
  • cheney416's fossil story
  • jpc
  • A Novice Geologist
  • Red-Headed Red-Neck Rock-Hound w/ My Trusty HellHound Cerberus
  • Red Headed
  • Paleo-Profiles
  • Walt's Blog
  • Between A Rock And A Hard Place
  • Rudist digging at "Point 25", St. Bartholomä, Styria, Austria (Campanian, Gosau-group)
  • Prognathodon saturator 101
  • Books I have enjoyed
  • Ladonia Texas Fossil Park
  • Trip Reports
  • Glendive Montana dinosaur bone Hell’s Creek
  • Test
  • Stratigraphic Succession of Chesapecten

Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

  1. News flash and request for near-future feedback! After a 12-year(!) hiatus, the Paleontological Research Institution (PRI) is about to reboot American Paleontologist, the old avocational paleontology standby, as a community newsletter. To do what I can to support this effort, I've signed on as a columnist, with a column called "The PaleoCommunity Organizer." It centers the community aspect of our shared avocation and looks at all the ways in which acting as a community can inspire and save avocational paleontology and help it thrive in the 21st century. And, well, it wouldn't be much of a column about community if it were just me talking. A crucial aspect is hearing from y'all, whether that means calling me out on something I missed, or naming a powerful example of something I only just touched on, or reframing the conversation as you see it. The community always knows more than I do. So, community, bring your feedback here to The Fossil Forum, where we can build on each other's ideas and craft a better avocational paleontology world for all of us. Action item: Look out for a followup post here on March 31, 2024, when American Paleontologist's first newsletter drops. That's when I'll ask y'all to get the discussion rolling on my column's first entry: "How Fossil Community Got Lost—and How We Get It Back." Stay tuned.
  2. A short post today, just wanted to upload this interesting Rhizocorallium (?) I found on my most recent fossil hunting trip! It’s still the dead of winter here in Saskatoon, but we had a warm snap recently and I was able to hike out to a local glacial silt exposure and found it. Hoping to return to this site soon and hopefully find more!
  3. Hello everyone, even though I haven't reached 35 fossils in my collection like I hoped for this year, I still managed to close 2023 with my 34th fossil! The one I'm going to show you today is, in fact, this 34th fossil, which is also the first mammal fossil I've ever owned Species: Merycoidodon sp. (Leidy, 1848) Size: ~3.0 cm long Age: 34-23 mya (Oligocene, stage indet.) Origin: South Dakota's Badlands (USA) About this fossil: a partial lower jaw of this genus, with four nicely preserved teeth. I personally like how, in this specimen, the matrix is still present, which helps to keep the two parts together and just makes the fossil look nicer
  4. Hello everyone, and I hope you've all had a good day. I started to put my display cabinet together today, and after an exhausting day of work, I'm only half done and I haven't even started on the bookshelf! Yay! Sarcasm aside, I've got some more fossils I would like identified, as I am creating labels for my displays. Just as before, I would prefer the most specific identification possible - species would be preferable, but I would rather a genus or clade name over an invalid species name. Location would be helpful too. Again, if any of you want them, I can take more photos tomorrow. Specimen 1: Actinopterygii This specimen I purchased at a museum, which simply labelled it as 'fish fossil'. While I do not know the location, I suspected it was from the Green River Formation in Wyoming, as many commercially available Actinopterygii fossils come from that site. At first, I thought the specimen was Knightia, as that fish seems to be one of the more common from the Green River Formation, and the only common one of the same size and rough shape. However, after recently observing a slab of Knightia at a museum, I began to doubt my initial identification, as the Knightia in the museum looked more bloated than my specimen. Is it a Knightia, or something else? Specimen 2: Ammonite I apologise for the rather shoddy attempt at editing out the supplier's logo. As you can see, I purchased this ammonite in a small plastic case at a museum, and cannot take a photograph of it from all angles. However, the back of the box (or at least what survives of it) says that the ammonite is Jurassic of age and comes from Madagascar (thinking about it, the supplier probably had to stick the ammonite to the case in order to get it through customs). Therefore, after comparing it to other ammonites from the same location, I believe it is most likely a Phylloceras specimen, as those ammonites lived in the correct place at the correct time, and had the same shaped, relatively smooth shell. Do you all agree with this conclusion? Specimen 3: Gastropod Another specimen I purchased from a museum with no knowledge of its original location or age. Unfortunately, I know very little about Gastropods, so I do not know how to identify it. Do any of you recognise at least what group it came from, or even tell its species, time period or location? Specimen 4: Ray tooth I received this tooth as a gift in a set of various teeth from Chondrichthyes. The gift set identified the ray tooth as Jurassic in age, however gave no further information on the specimen. To add to the confusion, all of the fossil ray teeth I have found available to purchase online come from Myliobatis, a genus which only evolved in the Cenozoic. While I am pretty sure it is Myliobatis and the gift set's information was simply inaccurate, I would like confirmation that this conclusion is accurate. Also, I do know that there is only half of a tooth; it broke a while ago and I no longer have the second half. Thank you for all of your help! Next up will be a couple of Triassic plant fossils, and following that will be some fossils I am concerned are fake. Hope you all have a good night!
  5. Yesterday we had a day in the Southern Highlands region of NSW, Australia looking for Triassic fish fossils but had time to check out a nearby site we were told about. The Cenozoic plant fossils from this area have been known for decades, although no work has been done on them yet so I'm not sure how old they are. Our fossil insect friend has been interested in this site for a while and he tracked down a property with a great deposit of the material, here we spent an hour or so and found some great specimens! I look forward to revisiting the site and collecting more. These specimens will be given to the Australian Museum collection so they can be worked on (hopefully) one day. I'm still photographing the rest of the specimens we collected but here are three for now. The first is this weevil(?) elytron: A tiny conifer cone: A complete beetle(?), I prepared what I could but I'm not game to go any further without magnifying equipment. More to come!
  6. Jurassicbro238

    Lompoc Fossil ID

    Some of the first few fossils I ever collected came from Lompoc, California in the Monterey(?) formation. They definitely fueled my passion for fossils and prehistoric fauna. Anyway, I was wanting to make sure I've got my IDs right for some of the stuff I've collected. #1 This first one is probably the largest piece I found. Is it a pectoral fin from a large fish? #2 was really neat to me. It's a vertebra with what looks like the ribs still attached! #3 And this piece I'm not sure about. It looks like a skull piece from a fish #4 Looks like a mostly complete fish! It looks like its mostly missing the tail and I'm not sure what genus or species it is. It's seriously tiny though. I've got both halves of the head which is cool too. The detail is so small that my phone is having a hard time picking it up unfortunately
  7. JakubArmatys

    Whale ear bone fragment?

    Is this a whale ear bone? Age: Miocene Loc: Poland
  8. Hi everyone! I recently acquired a menagerie of fossils from South Carolina rivers and these three stood out. The first two appear to be skull pieces, most likely from fish but I have no idea what type. The last one I think is some sort of bizarre tooth though I have no idea from what. Cetacean maybe? Not sure exactly where in South Carolina these were found either unfortunately though lots of Megalodon, Auriculatus, and Hastalis were found with them so for age I'm guessing late Oligocene to early Miocene though there were some Pleistocene mammals mixed in as well. Any insight is appreciated as always! 1. measures 38.53 mm long, 28.39 mm wide, and 10.88 mm thick 2. measures 39.91 mm long, 26.65 mm wide, 12.06 mm thick 3. Not sure how teeth like these should be measured on the forum so I'm just going to measure it like a dinosaur tooth. "Crown height" is 29.04 mm, "Crown base length" is 21.74 mm, "Crown base width" is 9.29 mm
  9. siteseer

    Parotodus?

    Here's an odd one. I think it's a Parotodus that might be the species, P. oligocaenus, which I have read is valid - something to talk to David Ward about. I bought this around the mid-90's as part of a small lot of teeth from the Suwannee River, Florida. I wasn't sure what it was at the time and Parotodus wasn't an in-demand genus like it is now. The dealer thought this and the other teeth washed out of the Ocala Limestone (Late Eocene). I lost track of this tooth and thought I might've traded it somewhere down the line but found it with another tooth from the same site in a zip-lock in a different box. It measures just over 1 1/8 inches. It looks like some Oligocene Parotodus I've seen. @fossilselachian @MarcoSr @isurus90064 @sixgill pete @Al Dente @sagacious @Northern Sharks
  10. siteseer

    Fossillarry's Mammals

    As Larry familiarizes himself with how to attach photos to his posts, I will be posting for him. Larry is a humble collector of mammals but he is very experienced. He is one of the rare mammal collectors with knowledge of Eocene-Pleistocene groups. Most collectors specialize in Oligocene or Miocene-Pleistocene of North America but he knows a wide variety of forms specializing in ungulates (hoofed mammals of the Perissodactyla and Artiodactyla. He's hunted from California to Nebraska and South Dakota to Texas. The first specimen he'd like to share with the forum is a 2-tooth maxilla section of Cardiolophus, an early tapiroid from the Early Eocene, Willwood Formation of Bighorn Basin, Wyoming. A tapiroid is a perissodactyl (odd-toed ungulate) that currently appears to be part of the lineage that connects to modern tapirs or is likely related to that lineage. Larry might ask me to clarify that further. One thing to remember about Cardiolophus is that it was part of a great radiation of mammals that appeared at the base of the Eocene. It was the time of the earliest horse, tapir, chalicothere, and titanothere.. These animals were very much alike in form and dentition as they descended from a common ancestor in the Late Paleocene. Also attached is a photo of jaw sections of Cardiolophus. Jess
  11. I was told the rib could belong to some Pleistocene horse or a young mammoth. There were also proposals that the vertebra belonged to the steppe bison or the woolly rhinoceros. They both were found in Eastern Lesser Poland. What do you think? Thanks in advance!
  12. I was looking at some of my Oligocene teeth and took a little extra time with this one. I don't remember when I got it. I've bought from and traded with a few South Carolina dealers and collectors over the years. This one is from the Late Oligocene Chandler Bridge Formation. It measures about 11mm along the slant with fine serrations to the tip. I think it's an early Carcharhinus tooth but would like to hear from other collectors on this one. I was blanking on some names but I've got the call out to some of you. The Late Oligocene is a time before Carcharhinus became the wildly speciose genus we know today and already was by the end of the Miocene. None of the modern species were present in the Oligocene but there appears to have been a small variety of species by that time based on what I've seen from Germany, Pakistan, and South Carolina. This tooth reminds me of C. signatus so I wonder if it could be an early relative. @isurus90064 @MarcoSr @Al Dente @Untitled @sixgill pete @sagacious
  13. Mojigoji

    GMR fossils

    Went out to Green Mill run not too long ago and found some fossils that I simply couldn't identify. I have my suspicions of what they could be, but would rather get some expertise identification. Any help is appreciated!
  14. Cschwartz1

    Leaf fossils identification

    I'm looking for help in identifying some leaf fossils/impressions I found in the Fort Union formation in Montana. Most were found in S.E Montana. There are many different kinds. Can someone help me identify them? Can someone give me a good point of contact for someone? Here are several examples. Tia.
  15. Thomas Pageau

    Identification, mammal teeth

    Hello ! For my first post I want to show you some mammal teeth. I don't have a lot of informations about them, probably from North Africa. I don't know their age but all are mineralized so not that recent. I can add the sizes if it's very necessary. Some of them are very characteristics so I hope that an ID is possible. There are I think Rhinocerotidae, maybe Camelidae and others... I'm not good with mammal, all the infos are welcome ! Thanks for your help !
  16. So I just finished piecing together the remains of a partial sea turtle carapace that I dug out of a lag deposit just outside the town of Summerville in South Carolina. Anyone potentially know any taxonomic information on it, such as what genus or species it might be from? Conversion from inches to cm: 10 inches = 25cm; 5 inches = 12.5cm; 1 inch = 2.5cm
  17. BBC article here: https://www.bbc.com/news/world-middle-east-58340807 Academic article here (including co-authorship by our own @Boesse): https://royalsocietypublishing.org/doi/10.1098/rspb.2021.1368
  18. Found these at my ranch in the dirt pile, I appreciate your ideas
  19. Flaffy

    Proboscidean tooth?

    Hi! I'm having trouble ID-ing this ~4.4cm long mammal tooth from China. It was labelled as Playbelodon, though the lack of cusps makes me doubt that assessment. I'm starting to wonder if it's a Proboscidean at all, and if it's an entirely different family of mammal alltogether. Does anyone have an idea on what this could potentially be?
  20. I have some Gansu fossils from the Linxia Basin, but I wasn't 100% sure on ID. The teeth were sold as Entelodont molars, and my current assumption is that they belong to Paraentelodon macrognathus from the Oligocene deposits in the Linxia Basin. From what I've read, they are similar to Daeodon, at least size wise. I think the formation would be the Jiaozigou Formation? But I'm not entirely sure. The Chleuastochoerus jaw, i have no idea. I think there are 2 species present in the Linxia Basin, and I don't know if it's possible to ID them down to species level without more specific provenance. That said, I honestly don't know anything about this animal, aside from it being a prehistoric pig. I know the fang had some glue on it when I put some acetone on it during prep, so it's probably repaired. The back side had big globs of glue that turned pretty nasty in acetone, but fortunately, there was nothing on the jaw itself, and I easily dug the teeth hidden inside the matrix. Not really sure if I did a great job though since I don't prep that often.
  21. I'm virtually certain this tooth is an upper intermediate tooth of Parotodus benedeni from the Middle Miocene Sharktooth Hill Bonebed, Bakersfield, Kern County, CA. It's about 1 1/4 inches high (32mm) and an inch wide (25mm). It could be a juvenile tooth but I think the less-expanded root lobes indicate a tooth position between larger teeth. It's too big to be a symphyseal and the root is wrong for that anyway. The root is too high to be a posterior. The pallial dentine is worn away but you can see the depression of the bourlette. It isn't serrated and not the shape of Carcharocles megalodon. It's definitely not a Carcharodon hastalis nor planus tooth and it's not Isurus. I'm wondering if anyone else has a tooth like this - maybe a Lee Creek collector or another STH collector. Jess
  22. What do you think about this Cave bear paw? The seller said that it's 100% genuine and authentic but i'm not sure.
  23. Neanderthal Shaman

    Anyone good with amber?

    I got this amber when I was a small kid. It used to have a tag with its source listed, but it's been lost for 12+ years, and I can't for the life of me remember what it said. Looking at it, does anyone know whether it's more likely to be Dominican, or Baltic? It is yellow, but has a slight gold tint, and is slightly translucent. There's a couple of small buggos in it.
  24. A revised Cenozoic global sea-level curve is discussed in an open access paper with associated numerical time series for plotting. the Cenozoic global sea-level curve. it is: Miller, K.G., Browning, J.V., Schmelz, W.J., Kopp, R.E., Mountain, G.S. and Wright, J.D., 2020. Cenozoic sea-level and cryospheric evolution from deep-sea geochemical and continental margin records. Science Advances, 6(20), p.eaaz1346. Open access PDF of paper Time series for plotting the Cenozoic sea-level curve Yours, Paul H.
×
×
  • Create New...