Info

Fern-spore spike

No

No

No

No

No

Iridium anomaly

No

No

No

No

No

Claystone layer

No

No

No

No

No

Shocked minerals

No

No

No

No

No

Magnetostratigraphy

Yes(1)

Yes(1)

Yes

No

No

Radiometric dates

No

No

No

No

No

K vertebrates below

Yes (2, 3)

Yes (2, 3)

No

Yes

No

T vertebrates above

Yes(4)

Yes (4)

No

No

No

K leaves below

Yes (5, 6)

Yes (5, 6)

No

No

No

T leaves above

Yes (5, 6)

Yes (5, 6)

No

No

No

Locality name

(21) Cannonball Stage Stop Site

(22) Rattlesnake Butte Site

(23) Schaeffer Site

(24) Knispel Site

(25) Miller Site

Latitude

46° 13' 51.3" N

46° 09' 04.8" N

46° 01' 48.2" N

46° 03' 38.7" N

46° 36' 59.6" N

Longitude

101° 28' 3.9" W

101° 25' 52.4" W

101° 20' 06.4" W

101° 16' 49.4" W

100° 38' 19.6" W

County

Grant

Grant

Sioux

Sioux

Morton

State/Province

North Dakota

North Dakota

North Dakota

North Dakota

North Dakota

Country

0 0

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