Roz Posted April 15, 2014 Share Posted April 15, 2014 I don't trust my vision with this one. I think I see a few small round teeth on the lower part. Pennsylvanian Period, Texas Thanks! Welcome to the forum! Link to comment Share on other sites More sharing options...
Auspex Posted April 15, 2014 Share Posted April 15, 2014 I see the features you are referring to, but am hesitant to call them teeth. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 15, 2014 Share Posted April 15, 2014 Hello Roz, this is a strange fossil. If it's a jaw, do you know from which creature it could come from compared to the geological period? Link to comment Share on other sites More sharing options...
MarqusandDad Posted April 15, 2014 Share Posted April 15, 2014 When I enlarge your pic the knobs are disconected and look like calcite seperate from the other elements. JMO not teeth. Link to comment Share on other sites More sharing options...
squali Posted April 15, 2014 Share Posted April 15, 2014 Interesting Roz. It kind of looks like the 'teeth' on a gastropod. It's hard to remember why you drained the swamp when your surrounded by alligators. Link to comment Share on other sites More sharing options...
Roz Posted April 16, 2014 Author Share Posted April 16, 2014 Hello Roz, this is a strange fossil. If it's a jaw, do you know from which creature it could come from compared to the geological period? I am not certain but I find mainly fish remains at this site.. Welcome to the forum! Link to comment Share on other sites More sharing options...
Roz Posted April 16, 2014 Author Share Posted April 16, 2014 When I enlarge your pic the knobs are disconected and look like calcite seperate from the other elements. JMO not teeth. Hmmm, I hadn't noticed that but will look again with my loupe.. Welcome to the forum! Link to comment Share on other sites More sharing options...
Roz Posted April 16, 2014 Author Share Posted April 16, 2014 Interesting Roz. It kind of looks like the 'teeth' on a gastropod. I will have to look up images as I am not sure I have seen that feature on a gastropod before.. Welcome to the forum! Link to comment Share on other sites More sharing options...
Roz Posted April 16, 2014 Author Share Posted April 16, 2014 I see the features you are referring to, but am hesitant to call them teeth. Me too as I don't see anything that looks like enamel. Welcome to the forum! Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 16, 2014 Share Posted April 16, 2014 There is a linear stucture with regular holes, it looks a bit like that : http://www.thefossilforum.com/index.php?/topic/38201-fish-jaw/ http://www.thefossilforum.com/index.php?/topic/18166-fish-fine-spine-or-jaw/ About the outgrowth which looks to a tooth, maybe it's just a cemented sediment as suggested in an other case in the last post? Or maybe it could be a part of a jaw of a very little fish with a very worn remaining tooth : enamel is not visible anymore here it seems Or rather a fish pectoral spine i think : Link to comment Share on other sites More sharing options...
Coco Posted April 16, 2014 Share Posted April 16, 2014 Hi, Pennsylvanian Period, Texas Pensnsylvanian period is "carboniferous" for us. Perhaps it was too early to have fossils of fishes with such attributes Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 16, 2014 Share Posted April 16, 2014 Hi, Pensnsylvanian period is "carboniferous" for us. Perhaps it was too early to have fossils of fishes with such attributes Coco The ganoid fishes had no jaws or fins? for you Link to comment Share on other sites More sharing options...
Roz Posted April 16, 2014 Author Share Posted April 16, 2014 There is a linear stucture with regular holes, it looks a bit like that : http://www.thefossilforum.com/index.php?/topic/38201-fish-jaw/ http://www.thefossilforum.com/index.php?/topic/18166-fish-fine-spine-or-jaw/ About the outgrowth which looks to a tooth, maybe it's just a cemented sediment as suggested in an other case in the last post? Or maybe it could be a part of a jaw of a very little fish with a very worn remaining tooth : 1.PNGAcanthocybium lower left jaw with teeth.JPGaligator-gar-jaw-bone-300x225.jpgDSC_6384.JPGFrag fish jaw.JPGMerluccius left dentary.JPGMâchoire inférieure de Poisson.gifMachoire poisson-.jpg EPC2003-14-.jpg enamel is not visible anymore here it seems Or rather a fish pectoral spine i think : catfish pectoral spines.jpgBagridae pectoral spine.JPGpost-42-1202771562.jpgpost-13-0-56391400-1397581185-.jpg After reading and looking at it all, I think the most likely to me just may be a pectoral spine. I hadn't even considered that but I should have.. Thanks so much! I also think the area has them all looking the same and spaced so evenly.. Welcome to the forum! Link to comment Share on other sites More sharing options...
Roz Posted April 16, 2014 Author Share Posted April 16, 2014 Hi, Pensnsylvanian period is "carboniferous" for us. Perhaps it was too early to have fossils of fishes with such attributes Coco I didn't realize you didn't have a Pennsylvanian. I'll start using Carboniferous instead.. Yes, I have a few jaws from the same period that have a few teeth showing.. All tiny.. Welcome to the forum! Link to comment Share on other sites More sharing options...
Auspex Posted April 16, 2014 Share Posted April 16, 2014 I the western hemisphere, the Carboniferous is split into the Mississippian and the Pennsylvanian, recognizing the distinctions not found elsewhere in the world. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 16, 2014 Share Posted April 16, 2014 This is not an absolute certainty of course, just a proposal that i made, thank you for this mystery Roz Link to comment Share on other sites More sharing options...
Roz Posted April 16, 2014 Author Share Posted April 16, 2014 This is not an absolute certainty of course, just a proposal that i made, thank you for this mystery Roz I know but I liked your idea of what it could be! Welcome to the forum! Link to comment Share on other sites More sharing options...
squali Posted April 16, 2014 Share Posted April 16, 2014 A shot in the dark Roz, Probably cause I've recently been looking at some micro gastropods and some have rounded symmetrical bumps that resemble teeth around the operculum lip. Silly, I can't find any Texas Carboniferous Gastropods with these features *picture from google images. It's hard to remember why you drained the swamp when your surrounded by alligators. Link to comment Share on other sites More sharing options...
Coco Posted April 17, 2014 Share Posted April 17, 2014 Hi, The ganoid fishes had no jaws or fins? for you Had ganoid any spine ? I don't know the Carboniferous period fauna. I didn't think that fishes went back also far in time... Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Missourian Posted April 17, 2014 Share Posted April 17, 2014 I think it could be a portion of a phyllocarid telson. A Kansas City area specimen for comparison: Note the teeth-like bumps. Appearance of a complete telson: Context is critical. Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 17, 2014 Share Posted April 17, 2014 I'm not very knowledgeable about that period neither, i have just done some research. I know that Ganoids fishes were numerous during the Paleozoic and Mesozoic, there are still some species today. look at the precedent picture with the fossil, they are distinguished by an heterocercal caudal fin. There were three groups, two of them had scales with distinct forms, polygonal or rounded, the third was covered with bony plates and could measure up to 10 meters. Lepistosteus (Gator fish) one of the last representant of polygonal scales group Esturgeon : last representant of bony plates group Amia calva : last representant of rounded scales group Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 17, 2014 Share Posted April 17, 2014 I think it could be a portion of a phyllocarid telson. A Kansas City area specimen for comparison: post-6808-0-36169500-1368665996.jpg Note the teeth-like bumps. Appearance of a complete telson: post-6808-0-16016100-1333416484.jpg Hi Missourian, could you tell more about phyllocarid telson, it's very interesting, i found this : https://gsa.confex.com/gsa/2009NC/finalprogram/abstract_155866.htm Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 17, 2014 Share Posted April 17, 2014 So it could be crustaceans http://onlinelibrary.wiley.com/doi/10.1111/j.1502-3931.1997.tb00449.x/abstract http://www.geology.cz/bulletin/fulltext/04-chlupac.pdf Link to comment Share on other sites More sharing options...
Sélacien34 Posted April 17, 2014 Share Posted April 17, 2014 Yes, it looks very close : Link to comment Share on other sites More sharing options...
Roz Posted April 17, 2014 Author Share Posted April 17, 2014 A shot in the dark Roz, Probably cause I've recently been looking at some micro gastropods and some have rounded symmetrical bumps that resemble teeth around the operculum lip. Silly, I can't find any Texas Carboniferous Gastropods with these features *picture from google images. Thanks for the image as I wasn't sure what that would look like.. Welcome to the forum! Link to comment Share on other sites More sharing options...
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