Fig. 11 in A middle Eocene seep deposit with silicified fauna from the Humptulips Formation in western Washington State, USA

Fig. 11. Invertebrate fossils from the middle Eocene Satsop Weatherwax seep deposit, Washington State, USA. A. The inarticulate brachiopod Discinisca sp. (NRM Br 149701); view on upper surface (A1) and close-up of sculpture (A2). B–D. Probable serpulid tubes; specimens with flanges (B, NRM An 3073; C, NRM An 3074); a partially coiled specimen lacking flanges (D, NRM An 3075). E. Spine possibly belonging to an atelostomatan echinoid (NRM Ec 34702), complete specimen (E1) and detail of sculpture (E2). F. Scaphopod with fine concentric ribs (NRM Mo 185038).