Info

Fern-spore spike

No

No

No

No

Yes

Iridium anomaly

0.72 ppb

No

No

No

1.38 ppb

Claystone layer

No

No

No

No

Yes

Shocked minerals

Yes

No

No

No

Yes

Magnetostratigraphy

Yes(1)

Yes(1)

Yes(1)

Yes(1)

Yes(1)

Radiometric dates

No

No

No

No

No

K vertebrates below

Yes (2, 3)

Yes (2, 3)

Yes (2, 3)

Yes (2, 3)

Yes(2, 3)

T vertebrates above

Yes(4)

Yes(4)

Yes(4)

Yes (4)

Yes (4)

K leaves below

Yes (5, 6)

Yes (5, 6)

Yes (5, 6)

Yes (5, 6)

Yes(5, 6)

T leaves above

Yes (5, 6)

Yes (5, 6)

Yes (5, 6)

Yes (5, 6)

Yes(5, 6)

* NB: Data are from principal reference unless otherwise cited. Other relevant references, numbered in parentheses, are listed at the end of the Appendix.

Locality name

(6) Pretty Butte

(7) Cannonball Creek

(8) Big Boundary

(9) Pretty Butte North

(10) Terry's Fort Union Dinosaur

Latitude

46° 22' 43" N

46° 27' 37" N

46° 23' 30" N

46° 23' 04" N

46° 28' 01" N

Longitude

103° 56' 51" W

104° 00' 08" W

103° 57' 40" W

103° 57' 06" W

104° 00' 28" W

County

Slope

Slope

Slope

Slope

Slope

State/Province

North Dakota

North Dakota

North Dakota

North Dakota

North Dakota

Country

0 0

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