Monica Posted February 25, 2017 Share Posted February 25, 2017 Hello once again! What follows are pictures of gifts that I recently received for various occasions, and I was hoping to get your input... Specimen #1: One of my colleagues gave me this rock for my birthday. She collected it when she visited the Rocky Mountains (Canadian side) a few years ago. I think it's a bunch of bryozoans - what do you think? Specimen #2: My husband's best friend was at a rock/mineral show (he's a geography/geology teacher) and he picked up this trilobite for me for Christmas. The guy who sold it to him included a card with some information regarding the location where it was found as well as its identity - is it correct? Specimen #3: One of my students gave me this rock (with a section cut off so you can see the inside) as a Christmas gift - it's very interesting-looking, and he wrote a pretty funny card to go along with it (please excuse the spelling and grammar - teenagers these days don't seem to care about that stuff, unfortunately - I'm not his English teacher, by the way!): Thanks so much! Monica Link to comment Share on other sites More sharing options...
ynot Posted February 25, 2017 Share Posted February 25, 2017 1 bryozoan seems a good guess, but looks a little big for My taste - maybe a coral(S) 2 yes 3 an iron rich gneiss that has an oxidized outer layer. 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Kane Posted February 25, 2017 Share Posted February 25, 2017 #2 looks like Flexicalymene ouzregui, but I believe the date is not Devonian, but upper Ordovician (but the species may have spanned into the Devonian, so nothing major). 2 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
jpc Posted February 25, 2017 Share Posted February 25, 2017 I can't help with Indonesian ID, but I am also at the age where I am hygenic. 3 Link to comment Share on other sites More sharing options...
Rockwood Posted February 25, 2017 Share Posted February 25, 2017 They may have been eroded out a bit, but I would still go with bryozoan on the first one based on the cross sectional shape and orientation of the living spaces. 2 Link to comment Share on other sites More sharing options...
GeschWhat Posted February 25, 2017 Share Posted February 25, 2017 I can't help with identification but I LOVE the note from your student. Priceless! 3 Lori www.areallycrappystory.com/fossils www.facebook.com/fossilpoo Link to comment Share on other sites More sharing options...
Monica Posted February 26, 2017 Author Share Posted February 26, 2017 10 minutes ago, GeschWhat said: I can't help with identification but I LOVE the note from your student. Priceless! I know, Lori - I love the note, too - it made me laugh out loud when I read it (and it still gives me a chuckle every time I read it!). 2 Link to comment Share on other sites More sharing options...
Monica Posted February 26, 2017 Author Share Posted February 26, 2017 1 hour ago, jpc said: I can't help with Indonesian ID, but I am also at the age where I am hygenic. It's nice to know I'm not alone! BTW - The student mentioned cooking for me because he knows I love to bake AND he knows that I'm an avid hand-washer, which is why he thought it better not to cook/bake anything for me since teenagers don't seem to care too much about having clean hands before handling food (which I observe every time I offer them my home-baked cookies each semester - I teach science, so there are sinks in my classroom, which might lead you to think that students would wash their hands before eating - I'd say only about 25% of them bother to do so - kids these days... ) Link to comment Share on other sites More sharing options...
FossilDAWG Posted February 26, 2017 Share Posted February 26, 2017 #1 has a lot going on, but the large specimen that bisects the rock, with the relatively large pores, looks like a branching tabulate coral, Thamnopora, that is characteristic of several Devonian formations in the Rockies and elsewhere. There is also a small hemispherical tabulate coral that looks like a tiny Favosites colony, about dead center in the rock. The twig-looking fossils to the left side may be bryozoans. #2 id definitely a Flexicalymene ouzregui , as Kane suggested. The species is confined to the Ordovician, and the genus is Ordovician and Silurian but does not extend to the Devonian. If you do a search for Flexicalymene ouzregui , you will find some informative posts by Piranha. Don 2 Link to comment Share on other sites More sharing options...
TqB Posted February 26, 2017 Share Posted February 26, 2017 (Edit: I somehow missed reading Don's comment before posting this, looks like we agree.) The pores in the most obvious branch on the first one are too large for bryozoan. It looks like a Thamnopora type tabulate coral. The ones with smaller pores could be another tabulate such as Parastriatopora. It looks like a typical Devonian assemblage, if that's appropriate for the find spot. 2 Tarquin Link to comment Share on other sites More sharing options...
Rockwood Posted February 26, 2017 Share Posted February 26, 2017 While we have the attention of a couple heavyweights here, does the orientation of corallum relative to the colony axis in these branching tabulates vary from being near normal (90') to that more typical of a bryozoan ? 1 Link to comment Share on other sites More sharing options...
doushantuo Posted February 26, 2017 Share Posted February 26, 2017 I have mentioned ultrastructure before.. the ultrastructure of Thamnopora compared to another species: ComprenduAcadtourneurt6k6436916t-4.pdf 2 Link to comment Share on other sites More sharing options...
doushantuo Posted February 26, 2017 Share Posted February 26, 2017 All clonal organism can exhibit indeterminate growth ,which is kinda useful when your environment is variable Being clonal,their genetics and development are different. and given the large disclaimer i see,please download this very very soon edit:done,as promised 1 Link to comment Share on other sites More sharing options...
TqB Posted February 26, 2017 Share Posted February 26, 2017 2 hours ago, Rockwood said: While we have the attention of a couple heavyweights here, does the orientation of corallum relative to the colony axis in these branching tabulates vary from being near normal (90') to that more typical of a bryozoan ? I'm no tabulate expert but have a few references... . The corallites in the ones I mentioned usually diverge at an acute angle from the axis and then bend out sooner or later to roughly 90 degrees, by the time they reach the surface. Parastriatopora typically diverges more quickly than Thamnopora, as well as being narrower. (By the way, according to the Treatise, corallum is the exoskeleton of the whole colony (or solitary coral). Corallite is the exoskeleton of a solitary polyp.) From Walkden, 2015, Devonshire Marbles: their geology, history and uses, vol. 2, p. 455: 4 Tarquin Link to comment Share on other sites More sharing options...
doushantuo Posted February 26, 2017 Share Posted February 26, 2017 great slices,Tarq edit: T's P. revision 1 Link to comment Share on other sites More sharing options...
TqB Posted February 26, 2017 Share Posted February 26, 2017 They are but not mine, doush! Tarquin Link to comment Share on other sites More sharing options...
doushantuo Posted February 26, 2017 Share Posted February 26, 2017 That doesn't detract from their greatness Link to comment Share on other sites More sharing options...
Rockwood Posted February 26, 2017 Share Posted February 26, 2017 Great stuff here guys. I hope some younger kids are learning as much as this old one. Link to comment Share on other sites More sharing options...
abyssunder Posted August 4, 2017 Share Posted August 4, 2017 Tabulate coral for sure. Some other examples here . 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Doctor Mud Posted August 5, 2017 Share Posted August 5, 2017 several fossils, an interesting rock with a cool back story, and one very adorable card 1 Link to comment Share on other sites More sharing options...
Plantguy Posted August 6, 2017 Share Posted August 6, 2017 Yep Monica. neat additions and provenance. good stuff. congrats! Regards, Chris 1 Link to comment Share on other sites More sharing options...
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