Rosemary 9 Report post Posted April 9 I am wondering if this sample is a trilobite. The second pic contains an additional sample. Both taken from the same rock. Share this post Link to post Share on other sites
Tidgy's Dad 9,830 Report post Posted April 9 The top one indeed looks like a partial trilobite, part of the thorax and the pygidium. The second one looks like the impression of part of the cephalon. Share this post Link to post Share on other sites
Peat Burns 2,239 Report post Posted April 9 Hmmm. Looking at the margins of the first item, am I seeing growth lines? Made me think bivalve or brachiopod. Agree on the second item being trilobite. Share this post Link to post Share on other sites
Fossildude19 10,393 Report post Posted April 9 It is best to take pictures from directly above the item, looking down at it. Oblique angles do not show correct detail, as it can be skewed by the angle. Share this post Link to post Share on other sites
Fossildude19 10,393 Report post Posted April 9 Excellent! This makes me think it is a bivalve/pelecypod. Looks more like a shell than trilobite, to me. Share this post Link to post Share on other sites
Kane 7,790 Report post Posted April 9 I wonder if it's possible that this is a rostroconch. Share this post Link to post Share on other sites
Tidgy's Dad 9,830 Report post Posted April 9 Oooooppps! Oh well, I was half right. Share this post Link to post Share on other sites
DevonianDigger 731 Report post Posted April 9 +1 for the top piece being bivalve, the bottom piece is definitely a trilobite cephalon, maybe a Dalmanitidae from the Silurian? I really don't know the area, but it doesn't look like any of the Devonian trilobites from Indiana. Share this post Link to post Share on other sites
Peat Burns 2,239 Report post Posted April 9 Looks like there is a Hederellid-type bryozoan on the mold of the trilobite cephalon! Share this post Link to post Share on other sites
Rosemary 9 Report post Posted April 9 I was wondering what that pretty thing was! Thx. Share this post Link to post Share on other sites
