AJ58 Posted April 12, 2019 Share Posted April 12, 2019 I found these fossils in creek gravel Northeast Arkansas Lower Ordovician.Someone please tell me if they are a sponge or coral.And the name of species . Link to comment Share on other sites More sharing options...
Innocentx Posted April 12, 2019 Share Posted April 12, 2019 I think what you have are bryozoans that grew on top of other things. In one case they grew on surface of a coral. Nice. 1 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
AJ58 Posted April 12, 2019 Author Share Posted April 12, 2019 So are my fossils two different species one growing on top of the other? Link to comment Share on other sites More sharing options...
TqB Posted April 12, 2019 Share Posted April 12, 2019 The first photo with the stars looks like weathered tabulate coral surfaces - many similar looking ones possible in the Ordovician but something like Heliolites. I think your specimens are the whole coral colonies i.e. single species. 1 Tarquin Link to comment Share on other sites More sharing options...
Rockwood Posted April 12, 2019 Share Posted April 12, 2019 34 minutes ago, TqB said: The first photo with the stars looks like weathered tabulate coral surfaces - many similar looking ones possible in the Ordovician but something like Heliolites. I think your specimens are the whole coral colonies i.e. single species. The geometry seems to suggest that the growth was from a center above these shapes. How does that work ? Link to comment Share on other sites More sharing options...
TqB Posted April 12, 2019 Share Posted April 12, 2019 2 hours ago, Rockwood said: The geometry seems to suggest that the growth was from a center above these shapes. How does that work ? I'm seeing them as inverted cones, with the top colony surfaces flattish or concave. 1 Tarquin Link to comment Share on other sites More sharing options...
AJ58 Posted April 12, 2019 Author Share Posted April 12, 2019 20 minutes ago, TqB said: I'm seeing them as inverted cones, with the top colony surfaces flattish or concave. I do agree that the fossils I have are cone shaped whole coral single species.I will keep looking for the name of that species.THANKS for the help. Link to comment Share on other sites More sharing options...
Peto Lithos Posted April 12, 2019 Share Posted April 12, 2019 There is a bryzoan here which looks similar to yours. 1 Link to comment Share on other sites More sharing options...
AJ58 Posted April 12, 2019 Author Share Posted April 12, 2019 5 minutes ago, Peto Lithos said: There is a bryzoan here which looks similar to yours. Do you know the name of the bryzoan species that looks similar to mine?Thanks. Link to comment Share on other sites More sharing options...
Peto Lithos Posted April 12, 2019 Share Posted April 12, 2019 I'm afraid that I can't help you there. Link to comment Share on other sites More sharing options...
AJ58 Posted April 12, 2019 Author Share Posted April 12, 2019 Are Brayzons a type of coral or sponge or a different species? Link to comment Share on other sites More sharing options...
TqB Posted April 12, 2019 Share Posted April 12, 2019 1 hour ago, AJ58 said: Are Brayzons a type of coral or sponge or a different species? It's Bryozoans - a whole separate phylum, completely different from sponges and corals. 1 Tarquin Link to comment Share on other sites More sharing options...
Rockwood Posted April 12, 2019 Share Posted April 12, 2019 6 hours ago, TqB said: I'm seeing them as inverted cones, with the top colony surfaces flattish or concave. So the coralites bud laterally in a cozey little cup of coenosteum. Pretending to be horn corals. I'm used to finding more ball shaped colonies that are hard to tell just which way they were headed. Link to comment Share on other sites More sharing options...
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