. Bulletins of American paleontology. Wisconsin Mollusks: Browne and Bruder 207 Upper Secti. SE Localit) 5 NW LOCALITY (i The climate throughout the period of deposition of loess in this section was moist and cool. Discus cronkhitei catskillcnsis and Hendersonia occulta, species which thrive in damp environments, are present. Vertigo modcsta, Vallonia albula, and Euconulus fulvus are all indicative of a cool climate. The latter species and Punctum minutissimum, present in large numbers in the lower two-thirds of the section, imply a hardwood cover. Anguispira alternata, the large woodland snai
. Bulletins of American paleontology. Wisconsin Mollusks: Browne and Bruder 207 Upper Secti. SE Localit) 5 NW LOCALITY (i The climate throughout the period of deposition of loess in this section was moist and cool. Discus cronkhitei catskillcnsis and Hendersonia occulta, species which thrive in damp environments, are present. Vertigo modcsta, Vallonia albula, and Euconulus fulvus are all indicative of a cool climate. The latter species and Punctum minutissimum, present in large numbers in the lower two-thirds of the section, imply a hardwood cover. Anguispira alternata, the large woodland snail, is restricted in number collected, but the recovered specimens, with one exception, are all from the lower part of the section. The upper part of the section, beyond the 46 collecting interval, shows a marked decline in the woodland species as the area became more open. LOCALITY 7 The visible section shows two types of silt, such as are found at some of the other localities. The lower silt, 22 feet thick, is com- pact and quite fossiliferous. The upper, a dunal silt, is less com- pact, less fossiliferous and somewhat deeper in color (Text-fig. 7). The fauna from the lower silt is dominated by species which inhabit a woodland environment. Woodlands were probably repre- sented by hardwood forests or forest borders because Anguispira alternata is present. The environment was moist and probably close to water. The general absence from the section of the semiaquatics. 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 Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
Size: 2861px × 874px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorpaleonto, bookcentury1800, bookdecade1890, bookyear1895
