fossil dude Posted September 11, 2011 Share Posted September 11, 2011 These things run 3 to 4 in, long, i thought bactrites, someone else said they were something else, what do you think? oh yes they are from the penn. period.they are from s/e okla. Link to comment Share on other sites More sharing options...
BobWill Posted September 11, 2011 Share Posted September 11, 2011 Those are real beauties! They may be mooreoceras. Look at orthocerida on wikipedia. Maybe Texas tunnel-rat will know. See recent thread titled Creta-sylvanian for pictures of his. Link to comment Share on other sites More sharing options...
Indy Posted September 11, 2011 Share Posted September 11, 2011 (edited) Straight cephalopods from the Pennsylvanian Mooreoceras orthocones Pennsylvanian Finis Shale Texas Website source: Click Here Pseudorthoceras knoxense Pennsylvanian Illinois Website source: no longer online I have collected many similar specimens of what appears to be both Mooreoceras and Pseudorthoceras at my Pennsylvanian site in Missouri. Post like this one is a painful reminder of the many fossils not yet researched and posted on my website Edited September 11, 2011 by Indy Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
thair Posted September 11, 2011 Share Posted September 11, 2011 (edited) I beleave those are actully a odd type of Gastropoda called "Plagioglypta" (Pilsbry 1898) I attached a picture of what I have ID of above. Edited September 12, 2011 by thair Link to comment Share on other sites More sharing options...
Indy Posted September 11, 2011 Share Posted September 11, 2011 Similar shapes have been thought to be Scaphopoda (tusk shells) Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
LanceH Posted September 11, 2011 Share Posted September 11, 2011 (edited) I would guess Scaphopods also which is a sister Class to Gastropods, Bivalves, and Cephalopods. Maybe someone here has collected them also and can confirm whether orthocones or scaphopods. If you look at the bigger end does it look like a tube filled with matrix? Edited September 11, 2011 by LanceH Link to comment Share on other sites More sharing options...
fossil dude Posted September 11, 2011 Author Share Posted September 11, 2011 (edited) according to the books i have mooroceras has circular rings and chambers, these are elliptic and have no chambers, the living quarters take more than half the length, then there is a small tube in the middle reaching from the living chamber to near the tip, no chambers at all! Edited September 11, 2011 by fossil dude Link to comment Share on other sites More sharing options...
LanceH Posted September 11, 2011 Share Posted September 11, 2011 Ok, tubelike, I vote for scaphopod. Those are very nice examples and are totally different then the bits I've collected at Jacksboro which have ridges along the length. Link to comment Share on other sites More sharing options...
Indy Posted September 11, 2011 Share Posted September 11, 2011 These fossils are very interesting and the quality of preservation from your locality is excellent For the benefit of our archives and the Net at large... its suggested to post images with scale or possibly image of these specimens together in palm of your hand. Of course sunlight images would be the best. Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
jkfoam Posted September 11, 2011 Share Posted September 11, 2011 They certainly look like a scaphopod, being open on both ends. It may well be Plagioglypta, a scaphopod genus I believe. Three to four inches in length make it one big scaphopod. JKFoam The Eocene is my favorite Link to comment Share on other sites More sharing options...
Indy Posted September 11, 2011 Share Posted September 11, 2011 Three to four inches in length make it one big scaphopod. JKFoam Agree...However, several fossils from this locality are larger than fossils collected elsewhere. Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
BobWill Posted September 11, 2011 Share Posted September 11, 2011 (edited) Are there scaphopods without longitudinal ribs? Or do they sometimes not appear on internal molds? I'm still looking for my first one unless I've miss-identified something (again) Edited September 11, 2011 by BobWill Link to comment Share on other sites More sharing options...
fossil dude Posted September 11, 2011 Author Share Posted September 11, 2011 more new pics! Link to comment Share on other sites More sharing options...
fossil dude Posted September 11, 2011 Author Share Posted September 11, 2011 one more new pic.as i said 3 to 4 in. long, rings are elliptical not round! all from one site s/e okla pennsylvanian period, somewhere around 350 million yrs. ago!!!!!! these are rare in this area, all the other sites i have in this area only produce small fragments, rare here at least< how rare are they at your penn. era site?hey one other thing, these are not straight, the last 1/3 toward the tip is curved! Link to comment Share on other sites More sharing options...
Indy Posted September 11, 2011 Share Posted September 11, 2011 These are Extremely large...but not really surprising since many of the is fossils found at this locality are larger than found at other Pennsylvanian localities. I have found several of these and the largest one is about half the size of these. As far as the ID...I have to return to the project and pick up where I left off and do more research. Not all found elsewhere that have similar appearance are the same Thanks for posting the excellent pictures of fossils in hand and no doubt many who have spent years collecting Pennsylvanian age fossils are now turning green with envy Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
fossil dude Posted September 11, 2011 Author Share Posted September 11, 2011 thanks indy, you are a true gentleman and an outstanding help to the fossil community, keep up the good work, hope you find the find of a life time soon! Link to comment Share on other sites More sharing options...
Geodigger Posted September 11, 2011 Share Posted September 11, 2011 I would vote for scaphopods for these Pennsylvanian age OK specimens. I am not familiar too much with the Pennsylvanian, but have collected a fair number of scaphopods from Cretaceous and Eocene age rocks on the West Coast of Canada. The preservation of the shell would seem to rule out a nautiloid cephalopod. I will try to post some pics of fossil scaphopods in my collection for comparison in a day or so. Link to comment Share on other sites More sharing options...
Ludwigia Posted September 11, 2011 Share Posted September 11, 2011 (edited) Although I'm not familiar with the Pennsylvanian I'd go for scaphopods too. They remind me of the forms to be found in Mesozoic and Cenozoic layers. That curve at the end just does it for me. But actually I really don't know for sure, I just think they're really cool ! Indy should be able to get to the bottom of this judging by the quality of his very informative website and Geodigger knows his way around well. Roger Edited September 11, 2011 by Ludwigia Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
BobWill Posted September 12, 2011 Share Posted September 12, 2011 Are there scaphopods without longitudinal ribs? Or do they sometimes not appear on internal molds? I'm still looking for my first one unless I've miss-identified something (again) I'll answer my own question. Yes. I'm looking at pictures of the scaphopod Plagioglypta ( suggested by thair and jkfoam) that look exactly like yours. Link to comment Share on other sites More sharing options...
paco Posted September 12, 2011 Share Posted September 12, 2011 Really big scaphods, great finds. Can you take transversal pictures of the large opening to show the exact oval form of them and of the smaller ends, I wonder are they notched? Link to comment Share on other sites More sharing options...
paco Posted September 12, 2011 Share Posted September 12, 2011 (edited) They certainly look like a scaphopod, being open on both ends. It may well be Plagioglypta, a scaphopod genus I believe. Three to four inches in length make it one big scaphopod. JKFoam Not really, 4 inch (about 11-12 cm) are quite common in Plio- Miocene layers. Edited September 12, 2011 by paco Link to comment Share on other sites More sharing options...
Indy Posted September 12, 2011 Share Posted September 12, 2011 fossil dude As you know I'm focused on imaging fossils and somewhat anal about the subject. The images in reply 13 and 14... are amazing...utilizing natural sunlight and attention to detail regarding distance to insure maximum focus KUDOS of the photos Barry Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
Mick69 Posted September 12, 2011 Share Posted September 12, 2011 one more new pic.as i said 3 to 4 in. long, rings are elliptical not round! all from one site s/e okla pennsylvanian period, somewhere around 350 million yrs. ago!!!!!! these are rare in this area, all the other sites i have in this area only produce small fragments, rare here at least< how rare are they at your penn. era site?hey one other thing, these are not straight, the last 1/3 toward the tip is curved! I found one of these recently, although it was in 3 pieces, and I somehow managed to drop the tip into the loose piles of rubble and was unable to relocate it. :-( Link to comment Share on other sites More sharing options...
thair Posted September 12, 2011 Share Posted September 12, 2011 (edited) I beleave those are actully a odd type of Gastropoda called "Plagioglypta" (Pilsbry 1898) I attached a picture of what I have ID of above. I added a picture Edited September 12, 2011 by thair Link to comment Share on other sites More sharing options...
Indy Posted September 12, 2011 Share Posted September 12, 2011 This is an interesting page with some extensive text including some pictures The text on this page is equally as important as comparing pictures ... My link I read the text and looking forward to what others say Flash from the Past (Show Us Your Fossils)MAPS Fossil Show Link to comment Share on other sites More sharing options...
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