ByronNWT Posted September 1, 2020 Share Posted September 1, 2020 Another driveway find. Is this a sponge of some kind or possibly and bone from dorsal fin? Kind of looks in the shape of the ulna i cant find any reference on what an isolated one looks like. Can bones be calcified like this? i have no idea. Quote Link to post Share on other sites
ByronNWT Posted September 1, 2020 Author Share Posted September 1, 2020 7/8” long and 1/2” wide at narrow end Quote Link to post Share on other sites
Tidgy's Dad Posted September 1, 2020 Share Posted September 1, 2020 Something covered in an encrusting coral or bryozoan, methinks. How big are each of the zooecia / corallites? 2 Quote Link to post Share on other sites
ByronNWT Posted September 1, 2020 Author Share Posted September 1, 2020 Less than half a millimetre is my guess. Ill try to measure when i get home. Quote Link to post Share on other sites
Tidgy's Dad Posted September 1, 2020 Share Posted September 1, 2020 In that case probably, though not certainly, a bryozoan. 1 Quote Link to post Share on other sites
ByronNWT Posted September 1, 2020 Author Share Posted September 1, 2020 I agree. Not as exciting but still a first for me. Quote Link to post Share on other sites
Tidgy's Dad Posted September 1, 2020 Share Posted September 1, 2020 I think it's just as good if not better. That's a nice piece and I would be trying to identify the species. Quote Link to post Share on other sites
ByronNWT Posted September 1, 2020 Author Share Posted September 1, 2020 Trying to but looking around the zooecia seem really small... Quote Link to post Share on other sites
ByronNWT Posted September 1, 2020 Author Share Posted September 1, 2020 1 hour ago, Tidgy's Dad said: I think it's just as good if not better. That's a nice piece and I would be trying to identify the species. Genus fistulipora? Quote Link to post Share on other sites
Tidgy's Dad Posted September 1, 2020 Share Posted September 1, 2020 1 hour ago, ByronNWT said: Genus fistulipora? Maybe. I don't know your formation, I'm afraid. Quote Link to post Share on other sites
ByronNWT Posted September 1, 2020 Author Share Posted September 1, 2020 Unfortunately there is next to zero info on fort simpson formation. Its mid to late devonian shallow ocean. There is a species Fistulipora mackenziensis from canada mid devonian... and im on the mackenzie river. Thats my guess and im sticking to it. Quote Link to post Share on other sites
oyo Posted September 1, 2020 Share Posted September 1, 2020 Sponge for me. Demospongiae, Hadromerida. Probably family Suberitidae, genus Chaetetes. Can you see Treatise online nº 58 Part E, Revised, Volume 4, Chapter 4A–B: HYPERCALCIFIED EXTANT AND FOSSIL CHAETETIDTYPE AND POST-DEVONIAN STROMATOPOROID - TYPE DEMOSPONGIAE: SYSTEMATIC DESCRIPTIONS from here https://www.researchgate.net/publication/257559077_Hypercalcified_Extant_and_Fossil_Chaetetid-Type_and_Post-Devonian_Stromatoporoid-Type_Demospongiae_Systematic_Descriptions 2 Quote Link to post Share on other sites
ByronNWT Posted September 1, 2020 Author Share Posted September 1, 2020 Quote Link to post Share on other sites
ByronNWT Posted September 2, 2020 Author Share Posted September 2, 2020 Sponge of some kind was first guess because the uniformality of the small pores witch also made me think worn bone. I need to get. Abetter camera. Any tips on measuring and photographing small things like this? Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.