connorp Posted May 24, 2020 Share Posted May 24, 2020 Bivalves always challenge me. If the ear (is that the right word?) on the left wasn't present, I would have called this Dunbarella sp. But the rounded ear doesn't match any species of Dunbarella I've seen. Maybe another genus, like Aviculopecten? Not sure. From Pennsylvanian black shale in Illinois. Thanks for any help. Link to comment Share on other sites More sharing options...
ClearLake Posted May 24, 2020 Share Posted May 24, 2020 In Newell (1937) Plate 2 #7 he shows a Dunbarella with a rounded auricle (ear). It is labeled as Dunbarella rectalaterarea. 2 Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 24, 2020 Share Posted May 24, 2020 I don't see why this couldn't be Dunbarella sp. This website has this illustration: 2 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...
connorp Posted May 24, 2020 Author Share Posted May 24, 2020 29 minutes ago, ClearLake said: In Newell (1937) Plate 2 #7 he shows a Dunbarella with a rounded auricle (ear). It is labeled as Dunbarella rectalaterarea. Thanks for the reference, very useful. Link to comment Share on other sites More sharing options...
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