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Showing results for tags 'Achistrum'.
Hello, here are two purported sea cucumbers among some Mazon Creek material I purchased some time ago. The first, better preserved specimen (with counterpart) was labeled without genus, the second specimen was labeled as Achistrum sp. when I got them. Is this correct? The second one looks like some Achistrum material depicted in the net, though my specimen is small (about 2 cm) and possibly only a fragment. However, I don't see anything specific in this specimen that reminds me of a sea cucumber, but the specimens "in the net" (google picture search) are of similar "structure" (except that t