Bullsnake Posted June 28, 2013 Share Posted June 28, 2013 Overall view of a few of the finds. Dendrite - Argentine limestone Orthocone - Liberty Memorial shale. A couple of things I was wondering about this. Could the damage on the crushed end be due to predation? Also, what is the tubular structure on the surface? Worm tube? ~8mm Steve Link to comment Share on other sites More sharing options...
Bullsnake Posted June 28, 2013 Author Share Posted June 28, 2013 Unknown - Muncie Creek concretion. I can't figure this out. It has a shelly look to it, but I was wondering about a scale, too. The configuration of the rays seems a little odd. ~5mm Positive Negative Steve Link to comment Share on other sites More sharing options...
Bullsnake Posted June 28, 2013 Author Share Posted June 28, 2013 Fin/spine - Muncie Creek shale ~1cm Larger end Smaller end Closeup of barbs Steve Link to comment Share on other sites More sharing options...
Bullsnake Posted June 28, 2013 Author Share Posted June 28, 2013 And say hello to my little friend! Muncie Creek shale +1 in. Scutigera Steve Link to comment Share on other sites More sharing options...
Missourian Posted June 28, 2013 Share Posted June 28, 2013 Those are some fine close-ups.... Nice fractal pattern. The orthocone was probably crushed during sediment compaction. The little tubes could also be encrusting forams. I agree with the round thing being a scale. The spines are intriguing. They resemble part of a phyllocarid telson, but the barbs are throwing me off. Context is critical. Link to comment Share on other sites More sharing options...
snolly50 Posted June 28, 2013 Share Posted June 28, 2013 I'm liking those photos. They give a good feel for the fossils portrayed. The focus is a little soft around the outer margins, as typically seen, but they look great. Please post a little about the equipment/technique employed. Human beings, who are almost unique in having the ability to learn from the experience of others, also are remarkable for their apparent disinclination to do so. - Douglas Adams, Last Chance to See Link to comment Share on other sites More sharing options...
Bullsnake Posted June 28, 2013 Author Share Posted June 28, 2013 Those are some fine close-ups.... Nice fractal pattern. The orthocone was probably crushed during sediment compaction. The little tubes could also be encrusting forams. I agree with the round thing being a scale. The spines are intriguing. They resemble part of a phyllocarid telson, but the barbs are throwing me off. Thanks, Mitch. I know dendrites aren't uncommon, but I think they're so cool looking. I also wasn't about to speculate predation on the orthocone, and figured it was just compaction, but it's fun to imagine! Possibly forams, huh? Interesting! A scale would be a cool first for me! On the spine, what seems odd to me is that the barbs point in the opposite direction than I would think they should. That is, if the larger end is where it attached to whatever it came from. Steve Link to comment Share on other sites More sharing options...
Bullsnake Posted June 28, 2013 Author Share Posted June 28, 2013 I'm liking those photos. They give a good feel for the fossils portrayed. The focus is a little soft around the outer margins, as typically seen, but they look great. Please post a little about the equipment/technique employed. Thanks, snolly. I'm using an Amscope stereo microscope at 20X (with capability of 30X, 40X, and 60X, also), and just photographing with my point-and-shoot Canon Powershot A530 through the ocular. The depth of field focus is hard to eliminate with this technique on anything with depth. It might even have to do with lens curvature. Even with my USB scope it's still a focus issue. I expect that the stacking software would solve this, but I haven't delved into that yet. Someday I hope to! I'm not really advanced on photo techniques either, but it's fun to play! Steve Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 28, 2013 Share Posted June 28, 2013 Great close ups, Steve! That spine looks wicked cool. too. Thanks for posting the pics! Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Bullsnake Posted June 28, 2013 Author Share Posted June 28, 2013 Great close ups, Steve! That spine looks wicked cool. too. Thanks for posting the pics! Regards, Thank you, Tim! Steve Link to comment Share on other sites More sharing options...
snolly50 Posted June 29, 2013 Share Posted June 29, 2013 Bullsnake, thanks for the photo info. Your pictures are superior to the ones I have gotten with my Canon Powershot through my B&L Stereozoom. I will keep at it. I find that making good images is a really enjoyable addition to the general fossil enjoyment. Thanks. Human beings, who are almost unique in having the ability to learn from the experience of others, also are remarkable for their apparent disinclination to do so. - Douglas Adams, Last Chance to See Link to comment Share on other sites More sharing options...
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