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Showing results for tags 'suture'.
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I found this bone in a creek in Edmonton, Alberta, Canada. I have asked some hunters and farmers what it could be but nobody seems to know. It appears old but modern. There looks to be a suture mark or perhaps an old fracture or some pathology. I would appreciate any insight into what bone this may be. Or where I might look to find something to compare? Thank you.
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Hi everyone! I just got back from a trip to Penn Dixie Fossil Park near Buffalo, New York, and found some pyritized cephalopod fossils. Penn Dixie has rocks form the Givetian of the Devonian from the Hamilton Group. A young ammonoid is easily identified as Tornoceras uniangulare, but the other orthoconic fossils are harder to ID. I am pretty sure the small but more complete one is a Bactrites, because the siphuncle appears to be almost ventral, the distance between the septa, and the slightly slanted suture (after looking at Ludwigia's). The preserved shell is very smooth and couldn't be from a Spyroceras that are also found at Penn Dixie. Similar fossils to mine are pictured on their website, unidentified. If any more pictures are needed, I will try to take them. I wanted some expert advice before concluding it is a Bactrites. Can anyone help?
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Hi all, here is a spinosaur rooted tooth with a strange cavity sort of thing at the bottom of the partial root. Does anyone know if it's a hike for a new tooth? Or is it just some kind of damage It's from the kemkem, 7.5 cm long
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From the album: Prae's Collection (REMPC)
REMPC-C0039 Aioloceras besairiei (polished) Cretaceous, Albian Boeny Region, Southwest of Mahajunga, Madagascar-
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Hi everybody! Today i wanna show you one of my dearest ammonites...Choffaticeras segne! Making a search by keywords in TFF, i found only three results for this species...so i decided to enlarge the number! Now i present you my Choffaticeras segne: it comes from Goulmima in Morocco, belongs to Turonian (Upper/Late Cretaceous), it is 19cm in height and 1.461kg in weight. This specimen has been polished in both sides, obviously. It's very decorative and it makes its good looking part in my living room. I love its external sutures, how do you call this kind of suture in english? Please, let me know! For who loves taxonomy and scientific classification (like me), i leave you a little pattern that i made. Thanks for "watching" Choffaticeras segne Dominio: Eukaryota Regno: Animalia Phylum: Mollusca Classe: Cephalopoda Sottoclasse: Ammonoidea Ordine: Ammonitida Sottordine: Ammonitina Superfamiglia: Acanthoceratoidea Famiglia: Pseudotissotiidae Sottofamiglia: Pseudotissotiinae Genere: Choffaticeras Sottogenere: Choffaticeras (Choffaticeras) Specie: Choffaticeras (Choffaticeras) segne
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I have a few questions I’m unable to answer about ammonites. I’ve been doing some casual research, but it seems to lead to more confusion on this. I would really appreciate it if anyone could suggest more sites to look at as well. What kind of shell “decoration” is present on ammonites with ammonitic sutures? Was there any “normal” combination of shell and suture mark, or could their shells have any pattern of ridges, knobs, etc.? I’ve been hoping to find a sort of before and after polishing photo/sketch set, showing what shell went with what suture pattern, but have been unable to find anything. While trying to find the photo/sketch, I realized all photos of ammonitic sutures I’d found were of creatures that were involute, the outer whorls almost completely covering the inner. Is this just a coincidence, or were most/all ammonites with ammonitic sutures so involute? Also, did any/some/many/all ammonites with ammonitic sutures have an aptychus? I've been able to find all sorts of information on these features individually, but not on co-incidence, so to speak.