This is a geologic sample in one of the Bureau of Economic Geology's three Core Research Centers. API Number: 425053060400 Top Depth: 6500 Ft. Bottom Depth: 9200 Ft. lease_name: MARSHALL, S G sample_type_name: PALEONTOLOGY/PALYNOLOGY SAMPLES sample_category_name: Miscellaneous formation_name: Unknown formation_age_name: Unknown facility_name: Houston reservoir_name: POK-A-DOT operator_name: GAS PRODUCING ENTERPRISES, INC. state_name: Texas county_name: Zapata