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Russian Upper Oxfordian ammonites

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Russian Upper Oxfordian ammonites

Late Oxfordian sites are located not far from Moscow (e.g. by Bronnitsy) as well as some other regions like Kostroma (Mikhalenino) and Yaroslavl (Yoda) Oblasts.

Ammonites in Moscow region Amoeboceras alternoides and Amoeboceras serratum zones sometimes feature nacreous pyritization that makes them a sought-after prize for collectors. Body chambers and usually outer whorls do not get pyritized and preserved as imprints at best. The fossiliferous layer is situated below Moskva river level and is available only in winter.

The most numerous genera are Amoeboceras (late Cardioceras with keels), Euaspidoceras(M)/Mirosphinctes(m), Subdiscosphinctes and Arisphinctes

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8 Album Comments

Dylan_bo1

Dylan_bo1

Posted

Beautiful Pyritisation! 

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Moth.11

Moth.11

Posted

:thumbsu:

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Brian James Maguire

Brian James Maguire

Posted

Some beautiful specimens, well done

  • Thank You 1
LSCHNELLE

LSCHNELLE

Posted

Really fine looking specimens! And hard to get except under certain low water conditions. I love those nacreous looking ammonites.

LSCHNELLE

LSCHNELLE

Posted

I love those nacreous ammonites! Such beautiful specimens and hard to come by except at low water and under cold conditions.

LSCHNELLE

LSCHNELLE

Posted

I love those nacreous ammonites. Such beautiful specimens and hard to come by except under cold, dryer conditions.

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RuMert

RuMert

Posted

7 minutes ago, LSCHNELLE said:

I love those nacreous ammonites. Such beautiful specimens and hard to come by except under cold, dryer conditions.

Thank you! Looks like your post was replicated:D The conditions are OK,  but unusual which adds some seasonal flavor

LSCHNELLE

LSCHNELLE

Posted

1 hour ago, RuMert said:

Thank you! Looks like your post was replicated:D The conditions are OK,  but unusual which adds some seasonal flavor

It was so funny. I thought I put it in but I'm not I didn't see the comment posted. So I put it in again and again!

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  • Image Comments

    • Trilobite Pygidium Phillipsia gemmulifera

      By Brian James Maguire · Posted

      Its possible denis, its easier here in fairness as they are not that many species found on the malahide formation
    • Trilobite Pygidium Phillipsia gemmulifera

      By Denis Arcand · Posted

      Very nice, how do you determine the species of trilobites from Pygidium alone?
       
      They all look alike for me 
       
    • Productid Brachiopod

      By Philip Rutter 2 · Posted

      LOL.  Mine still won't.  I do so love computers.  I've been using them since we programmed with punch-cards.  And at every stage - there are little quirks here and there.  :-)   Thanks!
    • Douvilleiceras sp.

      By Ludwigia · Posted

    • Productid Brachiopod

      By Brian James Maguire · Posted

      Hi philip, I didn’t do anything special, just uploaded it from my phone, i clicked on the arrow above just now and it played straight away
    • Productid Brachiopod

      By Philip Rutter 2 · Posted

      Hi- That's a great video- and today its presence is confusing me.  When I first ran into it, a day or two ago- it displayed just fine on the page, had the typical little click-arrow, and all worked seamlessly right in place.   Had a splash screen with a thumbnail and the statement that it was a QuickTime movie.  Today- nice paperclip icon, no thumbnail, and it automatically made me download all 51 megabytes before I could see anything. 
       
      My point- I tried for several days a couple weeks ago to upload an iPhone video of about the same size; on my blog space here- and it totally refused to work, ever; I had to give up.   
       
      Did you perform any magical tricks to get it to work in the first place?  Mine never did; and today I am again rather desperately wanting to be able to make and show short videos here- my "whole animal" fossils are just insanely difficult to comprehend from flat photographs; which I proved to myself once again yesterday - showing all sides just gets more confusing.  Trying to show transitions from side A to side B - proves endlessly disappointing.  
       
      Did you upload yours directly from the Cloud?  I did not- I avoid the Cloud and uploaded (failed) from my MacBook - I got an icon saying it was there, but then when trying to play only got the message "cannot find what you're looking for."  Any hints on making movies work here would be greatly appreciated!  
    • Panda - Stegodon fauna group picture!

      By C2fossils · Posted

      Nice finds! And nice display frame as well!
       
       
      -Cal
    • Panda - Stegodon fauna group picture!

      By Moth.11 · Posted

      Cool frame!!!
      I have a display case with teeth of reptiles and fish from the Mesozoic and Paleogene. Maybe I'll post a photo on the forum someday when I have time to write a description for everyone. My laptop is broken, which makes it more difficult to complete my work. And I would also like to include the tooth of the megalosaur that I would like to buy.
       
    • Pustula nebrascensis w/encrusted Crania modesta

      By Bullsnake · Posted

      Really cool find!
    • Panda - Stegodon fauna group picture!

      By Psittacosaurus · Posted

      It is indeed very abundant. The Panda-Stegodon fauna ranges from Southern China to Southeast Asia but I believe the most fossiliferous locations are still in the Guangxi and Guizhou provinces of Southern China.
       
      Reasons for these teeth being in the caves:
      1. Carried by underground waters
      2. Animal seeking shelter in here but ended up getting trapped
      3. Most importantly, it's difficult for these to fossilize outside, where they can be destroyed by other animals/microorganisms/weathering. Inside the caves the temperature would be quite stable and if there are less bats, there are relatively less amount of bacteria. 
      Most southern Chinese caves are limestone caves, meaning that the bones get eroded but the teeth crowns are heavily calcitized and look quite awesome when placed above a flashlight.
       
      And yes, GIgantopithecus is extremely rare. You could even consider the Guangxi and Guizhou provinces as places where it's most abundant. Even still, it rarely turns up.
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