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  1. These heteromorph ammonites were found in the middle East in a senonian outcrop. In a limestone but the fossils are made of flint and removed by acid. the pieces are 3-4 centimetres long and are three different individuals. Can you please help me ID them?
  2. A large-scale study covering all aspects of paleobiology and anatomy of heteromorphs over the entire period of their existence, from the Late Devonian to the Cretaceous-Paleogene boundary. The article summarizes modern data on heteromorphs and adds some new interesting facts. 2021, not paywalled. Link here
  3. will stevenson

    Moroccan heteromorph

    Hi guys bought this when I was in Morocco however seller had no idea of provenance still bought it as it was very cheap. But would anyone have any ideas as to its age, species , location etc thanks so much
  4. I was considering buying this heteromorph ammonite from an online dealer and was just wondering if it looks authentic. Any advice would be much appreciated!
  5. Oxytropidoceras

    Australian Ammonites

    McNamara, K., 1987-1988. Australian Ammonites. Australian Natural History. 22(7), Summer 1987-88, pp. 332-336. Index and PDF links to Australian Natural History (1962-1995) Yours, Paul H.
  6. From the album: Ammonites

    Multiple views of a near complete uncommon heteromorphic ammonite from Central Texas

    © JohnJ

  7. Heteromorph

    T. peramplum #1

    From the album: Fauna and Flora of the Austin Group in Texas

    This specimen is the largest of its genus in my collection, and the largest known to me in any collection. It measures about 7 cm in height, and 4.3 cm in diameter. It retains its tubercles in the most mature whorl sections that are preserved well enough to tell. The specimen is quite crushed.
  8. Heteromorph

    T. peramplum #1

    From the album: Fauna and Flora of the Austin Group in Texas

    This specimen is the largest of its genus in my collection, and the largest known to me in any collection. It measures about 7 cm in height, and 4.3 cm in diameter. It retains its tubercles in the most mature whorl sections that are preserved well enough to tell. The specimen is quite crushed.
  9. Heteromorph

    T. peramplum #1

    From the album: Fauna and Flora of the Austin Group in Texas

    This specimen is the largest of its genus in my collection, and the largest known to me in any collection. It measures about 7 cm in height, and 4.3 cm in diameter. It retains its tubercles in the most mature whorl sections that are preserved well enough to tell. The specimen is quite crushed.
  10. Almost 2 weeks ago I went with a small group from the rockhound club up to the Vancouver Island Paleontology Museum and the Courtenay & District Museum to see their fossils. Weather was too crummy to do an actual collecting field trip at any place! I guess it's OK to post pics here. I won't post anybody's face. The lighting and some of the display cases themselves presented problems for photography at both places, besides which it was kind of a whirlwind tour, so these shots are the best I could do. I'd say the poor lighting was the worst thing about both places, but we're dealin
  11. Peat Burns

    Unknown Ammonites

    Ralph @Nimravis generously gave me these Ammonites. I think he bought them at a garage sale. There was no data with them. I have zero experience with ammonites. I am hoping someone will be able to put a genus name on one or more of them or even venture a guess as to from where they may have come and what time period. Does that matrix / assemblage look familiar to anyone? One appears to be a heteromorph. I think I see Inoceramus in there. Maybe Cretaceous? Texas? They are all the same color (differences in color between the pieces in the photos is due to different lighting). Sc
  12. AmmoTK

    Ammonite in Hokkaido

    Name: Hyphantoceras venustum Location: Obira, Hokkaido, Japan Age: Santonian of Late Cretaceous Description: A heteromorph ammonite found in North Japan. This species is very rare. It has four rows of tubercles. A completely preserved species are unknown.
  13. Heteromorph ammonites- why the weird shapes? I am at a loss...
  14. doushantuo

    I feel clammy

    Misaki_cretacjapasiaet_misakcommensmollusal-2014-Palaeontology.pdf COMMENSAL ANOMIID BIVALVES ON LATE CRETACEOUS HETEROMORPH AMMONITES FROM SOUTH-WEST JAPAN AKIHIRO MISAKI, HARUYOSHi MAEDA, TARO KUMAGAE and MASAHIRO ICHIDA Palaeontology, Vol. 57, Part 1, 2014, pp. 77–95 "Lagerstatt" is not among the keywords,but some ammonites are reasonably well preserved A long while back I said here that syn-vivo encrustation might be more common in the fossil record than usually assumed . @Heteromorph
  15. Creek was a little flooded today made it harder to navigate, started the day with 2 dead drill battery's that I had charged the night before so I decided to move father up to look at some different exposures, started by picking up some matrix for micro's from the bottom of the pecan gap, more on that later, and then some Del Rio clay for the same, (if someone has suggestions for how to wash this faster that would be great) spent the next 2 hours picking up heteromorph mariellas.
  16. KimTexan

    Texas Heteromorph ID

    I went hunting in the rain yesterday. It wasn’t one of my most successful hunts, but I still managed to find some cool stuff. I found this in The Grayson Formation, Cretaceous in the Denton, TX area. I had never hunted that area of the Grayson before and it was different as every area of the Grayson seems to be. I found this section of a heteromorph. I don’t believe it is a Mariella. I am wondering if it could be a section of Turrilites. I believe it only has 2 rows of tubercles. Any thoughts? Side view Top down view
  17. Greetings, I recently bought an Heteromorph Ammonite fossil from Morocco (my first moroccan ammonite) and I decided to clean it with a little bit of water the same way I did with previous fossils. Big mistake... since I was shocked to see how the red ammonite turned brown and some parts disappeared (those put together with some sort of brown putty) when I put the ammonite under the water... After speaking with some fossil collectors I found out that many Heteromorph Ammonites from Morocco are indeed broken and put together, and they are sometimes "created" using the parts of different ammonite
  18. james herrmann

    My New Heteromorph Sculpture

    From the album: james herrmann

    Heteromorph is my most recent sculpture with a paleontological theme. This is the rear view of the sculpture showing the shell spines.
  19. james herrmann

    Heteromorph, right side view

    From the album: james herrmann

    In this right side view of the sculpture I would like to show the green marble base. I chose this mottled green marble as a continuation of the kelp forest theme. I envision this ammonite pulling its way along the waving fronts of a kelp forest as it forages for small crustaceans. Kelp forests are contrasts of warm, bright beams of light and deep shadow. The marble is mottled in various shades of green much like looking down onto the kelp forest's waving fronds.
  20. james herrmann

    Heteromorph, front view

    From the album: james herrmann

    In this view I again wanted to show the cantilevered structure of the sculpture and the subtle color differences in the patination of the shell vs the body of the ammonite.
  21. james herrmann

    Heteromorphic Ammonite Left Front View

    From the album: james herrmann

    In this front left view I wanted to highlight the waving of the kelp. The challenge was to strongly support the heteromorph while still making the sculpture feel like there was movement and a lightness to the work.
  22. james herrmann

    Heteromorphic Ammonite Left Side View

    From the album: james herrmann

    This left side view of the sculpture shows the attachment of the ammonite to the kelp, actually there is a lot of bronze in the mass of tentacles. From the base to the top of the sculpture is approximately 40 inches.
  23. james herrmann

    Heteromorph Sculpture Left Rear View

    From the album: james herrmann

    I like the complex repeating nature of the spines in this view of the sculpture. I am supporting the mass of the bronze ammonite with the bronze kelp leaves welded into a trellis-like pattern to carry the weight down to the base.
  24. Ptychodus04

    Ammonite

    Somewhere, I posted about the receipt of this ammonite from @RJB‘s cast off pile. I finished up the prep yesterday. Unfortunately, I don’t know these ammonites well enough to give it a good ID. I know there’s someone here who does though. I gave up on the back ammonite as its quality wasn’t worth my time.
  25. Hello All, Recently, I've acquired a sliced half of the Cretaceous heteromorph ammonite Scaphites. While rarely sliced, I managed to find one buried in a pile of similarly sliced Madagascar ammonites, and purchased it. Here are the photos: 1. A view of the whole ammonite. Here, we can see the phragmocone as well as the sediment-filled living chamber. 2. A closeup of the phragmocone, showing the beautiful septa. The minerals are very pure in this example, making some chambers appear as if they are filled with a tinted glass. 3. The poi
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