Fullux Posted September 7 Share Posted September 7 Howdy all, Recently recieved this piece. Found in Laurel County, Kentucky. Was described as Calamites, which I agree with, but I'm wondering if anyone could tell me anything more about it. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 7 Share Posted September 7 That is an internal mold of the woody part of a horsetail like reed; that is the filling of the space once occupied by the pith by sediment. It is sometimes called a pith cast. 2 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Rockwood Posted September 7 Share Posted September 7 2 hours ago, DPS Ammonite said: That is an internal mold of the woody part of a horsetail like reed; that is the filling of the space once occupied by the pith by sediment. It is sometimes called a pith cast. Sorry, but I can't go along with calling Calamites a reed. Reed like maybe, but it was an arborescent sporophyte unrelated to grasses. 1 Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 7 Share Posted September 7 4 hours ago, Rockwood said: Sorry, but I can't go along with calling Calamites a reed. Reed like maybe, but it was an arborescent sporophyte unrelated to grasses. Reed like is more my intent. Thanks. My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Fullux Posted September 7 Author Share Posted September 7 9 hours ago, DPS Ammonite said: That is an internal mold of the woody part of a horsetail like reed; that is the filling of the space once occupied by the pith by sediment. It is sometimes called a pith cast. Would this be composed of the original sediment in? Link to comment Share on other sites More sharing options...
Rockwood Posted September 7 Share Posted September 7 Yes. That which filled the cavity. The actual plant body has not been preserved. It's the most common way that these are seen. Link to comment Share on other sites More sharing options...
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