Tidgy's Dad Posted April 30, 2020 Share Posted April 30, 2020 Wins from an auction hosted by my friend @Kasia These bits are in a medium grey limestone found at Raback, near Kinnekulle, Vastegotland, Sweden, so are probably from the Upper Cambrian part of the Alum Shale Formation. Maybe Peltura scaraboides? Or is there not enough left to get close to an id? Max 5 mm wide and 4 mm long. All specimens are on the same rock. The scale's in mm and is partially obscuring a bit seen better below : Not really expecting too much from these tiny fragments, but any help or blind guesswork very much appreciated. @piranha @Johannes @Dromiopsis But anyone else more than welcome to comment too Thank you. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
piranha Posted April 30, 2020 Share Posted April 30, 2020 Peltura scarabaeoides looks like a good match. Henningsmoen 1957 described a couple of subspecies: P. scarabaeoides scarabaeoides and P. scarabaeoides westergårdi Henningsmoen, G. 1957. The Trilobite Family Olenidae with descriptions of Norwegian material and remarks on the olenid and Tremadocian Series. Skrifter utgitt av Det Norske Videnskaps-Akademi i Oslo. I. Matematisk-Naturvidenskapellg Klasse, 1957(1):1-303 PDF LINK figures from: Bird, C. & Clarkson, E.N.K. 2003 Observations on the Ontogeny of Peltura scarabaeoides westergaardi Henningsmoen, 1957. Geologiska Föreningens i Stockholm Förhandlingar, 125(4):177-190 3 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 30, 2020 Author Share Posted April 30, 2020 3 hours ago, piranha said: Peltura scarabaeoides looks like a good match. Henningsmoen 1957 described a couple of subspecies: P. scarabaeoides scarabaeoides and P. scarabaeoides westergårdi Thank you very much, Scott. Tis nice to be (probably) right about a trilo id every now and again. I think I'll pass on the id to subspecies level for now, though! Thanks for the paper, decent long read on the Olenids. And those images look pretty close, the free cheeks also really match my specimens. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Johannes Posted May 1, 2020 Share Posted May 1, 2020 Regarding the picture quality, I can't see clear details to assign a species name, so I would name them only on genus level: Peltura sp. 1 Link to comment Share on other sites More sharing options...
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