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John Christian posted a new specimen. 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoJohn Christian has contributed specimen mFeM 50858 to myFOSSIL!
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John Christian commented on their own Fossil #013493 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoWell preserved sponges are rare in Arizona except for Actinocoelia maeandrina in the Permian (Leonardian) age Kaibab Limestone. I found well preserved ramose sponges with hollow interiors about three miles south of the town of Forest Lakes in central Arizona. Using HCl acid, my silicified sponge was dissolved out of the Leonardian Fort Apache…[Read more]
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John Christian updated their own Fossil #013455 7 years, 6 months ago
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John Christian created a Fossil #013493 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoA new fossil has been added. Thank you for contributing!
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John Christian posted a new specimen. 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoJohn Christian has contributed specimen mFeM 50861 to myFOSSIL!
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Excellent specimens, @john-christian – do you have an image with these specimens and an associated scale bar?
I also found a recent publication on this species, in case you are interested:…[Read more]
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I named it using the mentioned paper. I believe that measurements were provided in the data. Once again it is packed away somewhere so I cannot reshoot it with a scale. I have heard that you can add a scale next to the photo using the measurements provided.
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John Christian commented on their own Fossil #013465 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoHere are interior and exterior views of both valves of the Cretaceous oyster, Cameleolopha bellaplicata, collected in Post Oak Creek in Sherman, Texas, The specimen is more oval and elongated that most of the members of its species. The calcite valves with a trace of interior aragonite mother of pearl are covered in yellowish calcite cemented…[Read more]
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John Christian created a Fossil #013465 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoA new fossil has been added. Thank you for contributing!
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John Christian updated their own Fossil #013455 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months ago -
John Christian created a Fossil #013455 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoA new fossil has been added. Thank you for contributing!
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John Christian changed their profile picture 7 years, 6 months ago
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John Christian posted a new specimen. 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoJohn Christian has contributed specimen mFeM 50864 to myFOSSIL!
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Hi, @john-christian – really excellent specimen. Do you have another image of the oral side?
I am part of the curation team that are validating information on the website. The specimens with really high quality associated data will be marked as ‘research grade’ and will be shared with iDigBio so they can be searchable through a large data portal…[Read more]
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It is packed away in a box somewhere. I am almost positive that the oral side was covered in cemented sand otherwise I would have provided a picture. Please include it in iDig with all associated data.
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Thanks, John!
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John Christian commented on their own Fossil #013424 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoScutellaster interlineata (Stimpson, 1856)
The Pliocene/Pleistocene Merced Formation that occurs south of Fort Funston and into northern San Mateo County contains Pliocene Scutellaster interlineata sand dollars. They feed by burying themselves sideways in the sand unlike most sand dollars today.
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John Christian created a Fossil #013424 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoA new fossil has been added. Thank you for contributing!
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John Christian created a Fossil #013423 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoA new fossil has been added. Thank you for contributing!
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John Christian created a Fossil #013422 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoA new fossil has been added. Thank you for contributing!
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John Christian commented on their own Fossil #013403 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoAuthor Citation: Craigin 1893
This is a Cretaceous oyster that I found in Post Oak Creek in Sherman, Texas. The oyster has traces of a yellowish calcite-cemented sandstone found in the upper part of the Arcadia Park Formation of the Eagle Ford Group.
“Pediformis” in the name, Ostrea alifera var. pediformis, means foot-shaped or pediform because…[Read more]
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John Christian posted a new specimen. 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoJohn Christian has contributed specimen mFeM 50866 to myFOSSIL!
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Hi, @john-christian – do you have another image or two of this specimen with a scale bar? This species and subspecies wasn’t too easy to find information on, any suggestions for resources?
Talk to you soon, Jen-
Again it is packed away somewhere so I cannot add a scale. I believe measurements were provided. Sorry. Reference: A contribution to the invertebrate paleontology of the Texas Cretaceous: Texas Geological Survey Fourth Annual Report, pt. 2 by F. W. Craigin
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Thank you, I can check out that reference!
The requests for scales are so that the curation team can help verify your measurements. It’s one of our image requirements for submission to iDigBio but certainly not required to be on the myFOSSIL eMuseum database. -Jen
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John Christian created a Fossil #013403 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoA new fossil has been added. Thank you for contributing!
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John Christian posted a new activity comment 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoThe Finis Shale is the member.
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John Christian posted a new activity comment 7 years, 6 months ago
7 years, 6 months ago7 years, 6 months agoI’d go with Lophophyllidium plummeri since I don’t see any spines. I can’t tell if there are any bryozoan on top.
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Very interesting specimen, how is it preserved? This is a demosponge, correct?
It is silicified. I do not know what type of sponge it is. I am looking for an expert to help.
That’s very cool. I am pretty sure it is a demosponge. I found an occurrence through a paper and the PBDB on demosponges in AZ: https://paleobiodb.org/classic/displayCollResults?taxon_no=70272&max_interval=Permian&country=United%20States&state=Arizona&is_real_user=1&basic=yes&type=view&match_subgenera=1 but I think the location is quite…[Read more]
@jbauer Sadly, no ideas this time. I know very, very little on sponges XD