DPS Ammonite Posted May 26, 2018 Share Posted May 26, 2018 I found a sponge in the Pennsylvanian Naco Formation north of Payson, Arizona. It may be the same species as an earlier find although instead of pancake form it is a conical form: http://www.thefossilforum.com/index.php?/topic/82186-knocking-about-the-naco-pennsylvanian-sponges-and-corals/&tab=comments#comment-871386 The first photo is of the convex outer surface. Part of top is broken off. Longest length of the sponge is 8cm. Any ideas as to identity? @Arizona Chris See photos in additional posts since I am doing this on a phone and cannot reduce file size. 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...
DPS Ammonite Posted May 26, 2018 Author Share Posted May 26, 2018 Second photo is detail of exterior: 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...
DPS Ammonite Posted May 26, 2018 Author Share Posted May 26, 2018 Third photo is concave interior: 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...
DPS Ammonite Posted May 26, 2018 Author Share Posted May 26, 2018 Sponge is found with this known sponge: Chaunactis olsoni 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...
Wrangellian Posted May 26, 2018 Share Posted May 26, 2018 Before the IDs come in, I just want to say: nice specimens! They do look spongy! (same for the ones in the link which I missed first time around) Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted May 26, 2018 Share Posted May 26, 2018 Beautiful specimens, Sponges are often overlooked as gorgeous fossils. I can't help though. But I know a man who can. Or at least may........ @Spongy Joe Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Bobby Rico Posted May 26, 2018 Share Posted May 26, 2018 Stunning specimens I would be very proud to have found them. Good work. Link to comment Share on other sites More sharing options...
Spongy Joe Posted May 26, 2018 Share Posted May 26, 2018 I do like a good bit of spongage! Nice. Well, superficially nice; that external surface is lovely. What isn't lovely is that the interior looks like it's totally recrystallised, which makes it impossible to work out the ID. I'm afraid we're going to have to hope that someone here knows their local fossils - and it's not an area I've worked in, except as an undergrad (in my pre-spongy existence)! If forced to guess, I'd say that it looks like a Haplistion of some sort, but there are lots of species to choose from. 5 Link to comment Share on other sites More sharing options...
Missourian Posted May 27, 2018 Share Posted May 27, 2018 The first sponge is a beautiful example of form and structure -- inside and out. The outer-wall pores remind me of Heliospongia, but the overall structure and internal canals indicate something else. The second specimen is nice too. Context is critical. Link to comment Share on other sites More sharing options...
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