Nimravis Posted November 4, 2017 Share Posted November 4, 2017 Just looking for further confirmation on some pieces of Isotelus trilobites that I found a couple days ago in Lawrenceburg, Indiana. These close-up pics are of cleaned specimens, there are 2 pics at the end that I am not sure about. Hypostome: Hypostome and Thorax Segment: Thorax Segments: Genal Spines: Link to comment Share on other sites More sharing options...
Nimravis Posted November 4, 2017 Author Share Posted November 4, 2017 Fragments: Unknown Pieces? Again, just looking to see if I am on the right track with the id's. Link to comment Share on other sites More sharing options...
Peat Burns Posted November 4, 2017 Share Posted November 4, 2017 Those all look like correct IDs to me. Let's see what others say 1 Link to comment Share on other sites More sharing options...
Nimravis Posted November 4, 2017 Author Share Posted November 4, 2017 7 minutes ago, Peat Burns said: Those all look like correct IDs to me. Let's see what others say Thanks PB, I know you confirmed some earlier, but they look better cleaned up and isolated. Thanks again. Link to comment Share on other sites More sharing options...
erose Posted November 4, 2017 Share Posted November 4, 2017 Yep, Isotelus in kit form.... Nice hypostome. Link to comment Share on other sites More sharing options...
Nimravis Posted November 4, 2017 Author Share Posted November 4, 2017 56 minutes ago, erose said: Yep, Isotelus in kit form.... Nice hypostome. Thanks- next time I need to find a complete one. Link to comment Share on other sites More sharing options...
Northern Sharks Posted November 4, 2017 Share Posted November 4, 2017 The last 2 pics in the opening post are the tips of hypostomes, and everything looks Isotelus-y to me too. 1 There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
Shamalama Posted November 4, 2017 Share Posted November 4, 2017 10 hours ago, erose said: Yep, Isotelus in kit form.... lol! -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
Kane Posted November 4, 2017 Share Posted November 4, 2017 Does the Ikea version comes with a handy Allen key? ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
cck Posted November 4, 2017 Share Posted November 4, 2017 Yep...I get the same mix of parts from the Martinsburg fm in VA. Yours seem to be silicified which is much cooler! 1 Link to comment Share on other sites More sharing options...
Douvilleiceras Posted November 5, 2017 Share Posted November 5, 2017 Both the hypostomes are Isoteline. Fortey (1999) concluded that the forks were a trait of carnivorous trilobites, who used the forks to tear apart prey. 23 hours ago, Nimravis said: Genal Spines: This isn't a genal spine. It's far too wide for Isotelus and the point it too rounded. The characteristics (terracing, the raised portion, etc.) match a hypostome fork of Isotelus. 2 Regards, Jason "Trilobites survived for a total of three hundred million years, almost the whole duration of the Palaeozoic era: who are we johnny-come-latelies to label them as either ‘primitive’ or ‘unsuccessful’? Men have so far survived half a per cent as long." - Richard Fortey, Trilobite: Eyewitness to Evolution. Link to comment Share on other sites More sharing options...
Nimravis Posted November 6, 2017 Author Share Posted November 6, 2017 On 11/4/2017 at 10:23 PM, Douvilleiceras said: Both the hypostomes are Isoteline. Fortey (1999) concluded that the forks were a trait of carnivorous trilobites, who used the forks to tear apart prey. This isn't a genal spine. It's far too wide for Isotelus and the point it too rounded. The characteristics (terracing, the raised portion, etc.) match a hypostome fork of Isotelus. Thanks for the Info Jason, much appreciated. Link to comment Share on other sites More sharing options...
Harry Pristis Posted November 6, 2017 Share Posted November 6, 2017 For comparison: 2 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
doushantuo Posted November 6, 2017 Share Posted November 6, 2017 Nice specimen!! The hydrodynamics hypothesis of long forked hypostomes: 3 Link to comment Share on other sites More sharing options...
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