Wendyjo44 Posted January 14 Share Posted January 14 I've stumbled upon several hundreds of these fossils of I believe limestone formation. I really don't know a whole lot about fossils. Just what I've been reading online. Can I get a time period of what y'all think these may be from. Found in East Texas. 3 Link to comment Share on other sites More sharing options...
ted coulianos Posted January 14 Share Posted January 14 (edited) The majority of your fossils are molds or casts of gastropods and bivalves; without a more specific locality identifying age or formation is problematic. First photo is just a very suggestive rock, not fossil (same for photo #15 "yellow rock"). Photo #10 looks like a Cretaceous oyster, either Exogyra or Gryphea, so if your other finds were from the same place, you might try and narrow your search to Cretaceous formations in your area. BUT, pretty sure photos #4 & #6 are of a Silurian trilobite (Flexycalemene) coming out of the Atlas Mts. in Morocco. Seriously doubt if it came from Texas. (I'll defer to the trilobite experts on the FF on the trilobite i.d.) Also, a ruler or scale of some type will greatly aid future i.d.s. Edited January 14 by ted coulianos 2 Link to comment Share on other sites More sharing options...
Shaun-DFW Fossils Posted January 14 Share Posted January 14 2 hours ago, ted coulianos said: The majority of your fossils are molds or casts of gastropods and bivalves; without a more specific locality identifying age or formation is problematic. First photo is just a very suggestive rock, not fossil (same for photo #15 "yellow rock"). Photo #10 looks like a Cretaceous oyster, either Exogyra or Gryphea, so if your other finds were from the same place, you might try and narrow your search to Cretaceous formations in your area. BUT, pretty sure photos #4 & #6 are of a Silurian trilobite (Flexycalemene) coming out of the Atlas Mts. in Morocco. Seriously doubt if it came from Texas. (I'll defer to the trilobite experts on the FF on the trilobite i.d.) Also, a ruler or scale of some type will greatly aid future i.d.s. The first one looks like a gastropod with some matrix around it to me, do you see the same? I actually thought it was pretty clear and I find similar fossils frequently! 3 Link to comment Share on other sites More sharing options...
dries85 Posted January 14 Share Posted January 14 2 hours ago, Shaun-DFW Fossils said: The first one looks like a gastropod with some matrix around it to me, do you see the same? I actually thought it was pretty clear and I find similar fossils frequently! I'd also say photo #1 looks like a stonecast of a Turritella-like gastropod in the matrix.. 3 Link to comment Share on other sites More sharing options...
Rockwood Posted January 14 Share Posted January 14 The trilobite is definitely out of place with the rest of these. They are likely to be relatively inexpensive in rock shops though. Small children's toys seem to be a relatively common find while collecting in populated areas. There is also a possibility that it somehow survived transport in sediments that are less common in the area. 2 Link to comment Share on other sites More sharing options...
piranha Posted January 14 Share Posted January 14 14 hours ago, ted coulianos said: BUT, pretty sure photos #4 & #6 are of a Silurian trilobite (Flexycalemene) coming out of the Atlas Mts. in Morocco The calymenid is from the Upper Ordovican of Morocco. The pygidium will determine the genus: Flexicalymene (with pleural ribs) or Colpocoryphe (without pleural ribs). 4 1 Link to comment Share on other sites More sharing options...
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