Jump to content

Search the Community

Showing results for tags 'exogyra'.

More search options

  • Search By Tags

    Type tags separated by commas.
    Tags should be keywords or key phrases. e.g. carcharodon, pliocene, cypresshead formation, florida.
  • Search By Author

Content Type


  • Fossil Discussion
    • General Fossil Discussion
    • Fossil Hunting Trips
    • Fossil ID
    • Is It Real? How to Recognize Fossil Fabrications
    • Partners in Paleontology - Member Contributions to Science
    • Questions & Answers
    • Fossil of the Month
    • Member Collections
    • A Trip to the Museum
    • Paleo Re-creations
    • Collecting Gear
    • Fossil Preparation
    • Member Fossil Trades Bulletin Board
    • Member-to-Member Fossil Sales
    • Fossil News
  • Gallery
  • Fossil Sites
    • Africa
    • Asia
    • Australia - New Zealand
    • Canada
    • Europe
    • Middle East
    • South America
    • United States
  • Fossil Media
    • Members Websites
    • Fossils On The Web
    • Fossil Photography
    • Fossil Literature
    • Documents


  • 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
  • Sir Knightia's Blog
  • Terry Dactyll's Blog
  • shakinchevy2008's Blog
  • MaHa's Blog
  • Stratio's Blog
  • Phoenixflood's Blog
  • Brett Breakin' Rocks' Blog
  • Seattleguy's Blog
  • jkfoam's Blog
  • Erwan's Blog
  • Erwan's Blog
  • Lindsey's Blog
  • marksfossils' Blog
  • ibanda89's Blog
  • Liberty's Blog
  • Liberty's Blog
  • Back of Beyond
  • St. Johns River Shark Teeth/Florida
  • Ameenah's Blog
  • 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
  • nicciann's Blog
  • Olenellus' Blog
  • nicciann's Blog
  • maybe a nest fossil?
  • 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
  • xenacanthus' Blog
  • barnes' Blog
  • myfossiltrips.blogspot.com
  • HeritageFossils' Blog
  • Fossilefinder's Blog
  • Fossilefinder's Blog
  • Emily's MotE Adventure
  • farfarawy's Blog
  • Microfossil Mania!
  • A Novice Geologist
  • Southern Comfort
  • Eli's Blog
  • andreas' Blog
  • Recent Collecting Trips
  • retired blog
  • Stocksdale's Blog
  • andreas' Blog test
  • fossilman7's Blog
  • Books I have enjoyed
  • 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?
  • Hihimanu Hale
  • 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
  • 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
  • TyrannosaurusRex's Facts
  • PaleoWilliam's Blog
  • The Paleo-Tourist
  • The Community Post
  • 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
  • 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. Bartholom√§, Styria, Austria (Campanian, Gosau-group)
  • Prognathodon saturator 101


  • Calendar


  • 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.)

Found 18 results

  1. IMG_9841.JPG

  2. IMG_9840.JPG

    From the album Huge Big Brook Fossil Collection

    Nice Gryphaea and exogyra oysters..very large ..biggest is 5.5 inches
  3. Took a trip to eastern part of North Sulfur River near Cooper this afternoon. Water levels pretty low. About foot deep in most places. After walking down the bridge, I immediately noticed huge amounts of Exogyra oysters exposed everywhere. I usually find smaller ones in the past, but this time there were some huge ones that measures 6 inches across and weights 5 pounds lying on the surface. I only grabbed the ones that were less worn for my collection. There are still large amount everywhere.
  4. Hi, I live very close to big brook, NJ and have collecting many beautiful specimens of the oysters there. The oysters there are very unique, as they are some of the best and biggest of the species you can find in the world. I have many various specimens. Ill take any request for size, look, style as they all look different. Perhaps some like a more wavy pattern or separated pattern or a bubbly pattern. Im interested in anything you have to offer! I attached various pics to see. Although I have many and some even better.
  5. Shell with Embedded Something

    I have an Exogyra costata from the Peedee Form.(Maastrichtian) in North Carolina that has an oddity embedded in the right valve. It is not a shell or barnacle attached to the surface, and is almost perfectly round ,unlike any boring clams I have seen. I have picked ( dental probe) around the oddity to confirm it has depth and is not a surface attachment. It appears it was hollow as it is now filled with hard sediment. It has been suggested this may be an example of bioimmuration of some sort. Anyone have any ideas ? Thanks.
  6. Fluorescent Exogyra by Daylight.jpg

    From the album Fossil Flourescence

    In the daylight, this is an articulated Exogyra shell from the Cretaceous New Egypt Formation as it runs through Mullica Hill, New Jersey. I brought it home because it had an interesting bit of vivianite replacement covering half the surface of one valve. When I brought it home, I noticed some white material inside the cavity of the broken shell. I figured it might be calcite, which sometimes fluoresces. So, I pulled out my UV lamp. To my shock, not only did the white material glow an interesting powder blue color, but the majority of the one valve glows an intense, bright red! Meanwhile, the other valve doesn't glow at all. Scroll right to see what it looked like in the dark with the UV lamp.
  7. Hi, Recently I found this quite complete (both valves) oyster shell in an Upper Campanian to Lower Maastrichtian strata in SE of Pyrenees. My guess is Amphidonte pyrenaicum, a widespread species in the Tethys at this epoch. Supposing my guess is correct, problem is that I find that species named as (from older to newer papers): Exogyra pyrenaica, Ceratostreon pyrenaicum, Amphidonte pyrenaicum, Amphidonte (Amphidonte) pyrenaicum, and Amphidonte (Amphidonte) pyrenaica. So, I understand that former Exogyra genus has been splitted, Anyone knows of a paper about this issue? Thanks
  8. Exogyra vs Gryphaea

    I'm studying fossils and I'm having a difficult time understanding the visual(and structural) differences between Exogyra and Gryphaea. Any insights would be very much appreciated!
  9. Beekite rings

    Last January 12, I found some Exogyra sp. oysters in a limestone Late Campanian / Early Maastrichtian strata (SE Pyrenees, Catalonia, Spain), who turned to show abundant beekite rings. I owe to @abyssunder my knowledge of this mineral phenomenon, which, in my area,occurs mainly over laminar-type shells like oysters' (It can occur on other fossils, though). Have you fossils with beekite rings ?
  10. exogyra ?

    I believe this one is an Exogyra, maybe columba and perhaps columba major, it's size is about 7 cm :
  11. Texas Eagle Ford Exogyra Fossil

    In early July 2016, I encountered a virtual self-guide field trip posted online by Pete R. Rose, PhD in February 2012. He describes an Eagle Ford (Kef) outcrop exposed in the parking lot of Barton Creek Mall in Austin, Texas. I went there to check it out. The USGS webviewer only designates the area as Georgetown-Del Rio. But, the U.T. Bureau of Economic Geology has an accurate Geologic Quadrangle Map #38 that shows this feature. But, it predates Barton Creek Mall which is not on the map. Interestingly, the Austin Chalk Atco Member caps the nearby hilltops, but it is heavily weathered to caliche and rusty ferrous minerals. Difficult to find fossils in the transition zone. The South Bosque member is clearly visible and underlain by the Bouldin Flags (BF) Member. The BF has much thicker flaggy beds than I usually see (up to one foot thick). In the lower part of the BF, I extracted this beautiful slab of what I think are Exogyra columbella levis (Meek). The largest ones are ~1" wide. Most of the Kef outcrops I have visited have just fragmented oyster hash. This is the first time, I have seen the complete fossils rather than just rounded fragments. Also, I think a nearby rock had traces of a fish fin on it. I took a picture just after dark, but left the fossil there. It was a very large rock and a paper-thin fossil remnant. I believe it was about 6 to 8" long. Anyone have better IDs? I was surprised to see Exogyra in the Kef. Lee Schnelle
  12. Exogyra Prep Question

    I recently found this cluster of Exogyra at the North Sulphur River Texas. I would like to clean it up some so I could see them all and display it. What's the best way for a beginner to prep a piece like this? Sorry for the poor quality photo.
  13. 7 Mosasaur vertabrea, Enchodus tooth, Exogra in matrix and possible coral. Waded water and climbed through mud and to get to areas without footprints.
  14. Concretion? Exogyra?

    These are two of three "fossils" I found on my trip to Big Brook in New Jersey last week, the stream runs through sediments that date back to the late Cretaceous.(the third one I will post later today hopefully). After having been really excited about this find, and then having done a decent amount of research I think I am safe in assuming that this is just concretion, or a psuedofossil if I am using those terms correctly. Even though this is the conclusion I have come to, this is my first fossil hunting trip and I would love some second opinions to either confirm my theories or offer some new insight. This one is about three inches long, and two inches thick. These two images are what I believe to be extinct clams, Exogyra. It doesn't seem like it is the shells, but just a fossil of the clam itself (if that makes sense). Again, I would love to hear what anyone in the community has to say.
  15. A Museum Grade Exogyra

    This is the most intact specimen i've ever held. From a Coon Creek formation. About 72 mya. It does have a small chip along its outter edge missing...this happened in the collecting process in the field, also a spot of minor water-wear. I woild call this a 10, if not for the small damage, it would be a 10+ in my mind. A google search doesn't really show much that is on this specimens level. I have speculated that the reason this Exogyra is so complete is because it doesn't show good signs of an attachment scar. (From whatever it had originally stuck itself too.) This is just me guessing, but i like to envision this creature was stuck to something that over time just wasn't able to hold this shell to it, from there it fell to a place on the bottom in which sediments accumulated @ a faster rate. This lil guyfought as long as he could, but one day, the sediments that had been deposited on his upper surface became too great to bear....and that was the last day this shell ever opened! Always been curious "what's in there" . Have read that Exogyra's die in an opened position. You can see this specimen is still locked in @ the hinge. It appears to me it died in a closed position? @ any rate, this is the most complete example i've ever seen.
  16. Small Exogyra?

    Hello! I am new to the forum and new to fossil hunting in general. I have a 6 year old son that loves to dig and search for fossils. We were hoping for some help identifying these fossils. There is a park that we go to and there are TONS of these fossils all over the ground. From what we've researched, they look like exogyra except they are smooth and tiny. We have no clue what they are and would appreciate any help! They were found in San Antonio, TX if that helps. Thanks in advance!
  17. Fossil Finds In San Antonio, Tx

    I found these and many more in creek areas in two sites here in San Antonio. I love that my greatest finds have been here in my hometown of San Antonio. While Austin is my main source for a grand looking Exogyra Ponderosa, would you believe that its equal in size and shape is down here in San Antonio. I don't know which variety but the striations are very different and the horn curl is equally different at times. I will post some more soon and of Austin. Thank you for looking.