Page:Field Notes of Junius Henderson, Notebook 4.pdf/24

 	Upper San Pedro- shallow R.R. cut at SW limit of San Pedro Terrace, 2 to 3 ft. bed of gravel with fossils, particularly in ravine cutting bluff at. 252 species, 172 now living at, 15 only N of San Pedro, 36 only S of San Pedro, 24 extinct, 4 doubtful.

Map of

[Sketch map in field book]