. Bulletin. Natural history; Natuurlijke historie. llllfTTi Fig. 53. Alcova Limestone block from Milne Ranch with bivalves preserved as randomly oriented calcite-filled voids. Scale in centimeters. pecten cf. A. curticardinalis, Bakezuellia sp., and Pleurophorus? sp., all marine forms, to which Lee (1927) added Naiadites? sp. True Naiadites is a Pennsylvanian freshwater pelecypod. Although Branson and Branson (1941) claim that these fossils were collected from a limestone in the Chugwater above the Alcova, Pi- piringos (1953, 1957) has identified Pleurophorus? bergeri from the Alcova of the. F
. Bulletin. Natural history; Natuurlijke historie. llllfTTi Fig. 53. Alcova Limestone block from Milne Ranch with bivalves preserved as randomly oriented calcite-filled voids. Scale in centimeters. pecten cf. A. curticardinalis, Bakezuellia sp., and Pleurophorus? sp., all marine forms, to which Lee (1927) added Naiadites? sp. True Naiadites is a Pennsylvanian freshwater pelecypod. Although Branson and Branson (1941) claim that these fossils were collected from a limestone in the Chugwater above the Alcova, Pi- piringos (1953, 1957) has identified Pleurophorus? bergeri from the Alcova of the. Fig. 54. External casts and molds of pelecypod bedding plane brood in apparent life position, Alcova Limestone, Milne Ranch, Muddy Mountain, Natrona County. Scale in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Peabody Museum of Natural History. New Haven : The Museum
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