I saw traces only of one living animal in abundance, namely, the shells of a Bulimus
, which were collected together in extraordinary numbers on the driest spots.
Henderson made this statement about the taxon Bulimus Meek and Hayden in 1935 and no one, except maybe Taylor  has made a compelling argument for inclusion in a higher taxon.
Genus-group names applied to Meek and Hayden's taxon are Bulimus in 1856, Thaumastus in 1877, Bulimulus in 1886, Hyperaulax in 1923, Campeloma in 1929, Lioplax in 1930, Lioplacodes in 1946, and New Genus A in 1975.
Bulimus Scopoli, 1877 (Meek, 1876, considered a synonym of Thaumastus)