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

No

No

No

No

Yes (7)

Radiometric dates

No

No

No

No

No

K vertebrates below

No

No

No

No

No

T vertebrates above

No

No

No

No

No

K leaves below

No

No

No

No

No

T leaves above

No

No

No

No

No

Locality name

(26) Stumpf Site

(27) University of Mary Site

(28) Snyder Site

(29) Glendive

(30) Brockton

Latitude

46° 34' 08.3" N

46° 42' 50.8" N

46° 34' 22.9" N

47° 05' 44" N

48° 07' 37" N

Longitude

100° 37' 15.6" W

100° 45' 53.9" W

100° 29' 1.87" W

104° 41' 52" W

105° 00' 13" W

County

Morton

Burleigh

Emmons

Dawson

Richland

State/Province

North Dakota

North Dakota

North Dakota

Montana

Montana

Country

0 0

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