Figure 8 in A methane seep from the deep-marine, late Eocene Keasey Formation, Rock Creek, Columbia County, Oregon

Figure 8. Select carbonate rock hand samples from the Main Seep Site, with some showing taphonomy of macrofossil occurrences. A. Articulated specimens of Conchocele taylori Hickman, 2015 on weathered (orange-brown stained) outer surface of medium gray colored microcrystalline carbonate; sample RC9(2). B. Articulated specimen of C. taylori with partial recrystallized shell, found in stratigraphic up position, and infilled with medium gray microcrystalline carbonate sample RC10B. C. Dark gray, homogeneous to slightly mottled microcrystalline carbonate with scattered, thin-shelled bivalve fragments; sample RC9. D. Irregular, coalesced nodular, medium to dark gray microcrystalline carbonate with scattered, straight bivalve shell fragments; sample RC10A. E. Irregularly nodular and mottled microcrystalline carbonate to cemented breccia of medium to dark gray microcrystalline carbonate with scattered, relatively thick, single curved valves of C. taylori shells; sample RC11. F. microcrystalline carbonate cemented, friable calcareous sandstone with nacreous molluscan shell fragments; sample RC21.