TABLE 1. Summary of biogeographic results included in appendix.

Stage Simpson Similarity Index (emphasizes similarity between two faunas)

Low (≤30%)
Low-medium (31-40%)
Medium (41-60%)
Medium-high (61-80%)
High (≥81%)
Jaccard Coefficient/Distance
(emphasizes differences between two faunas)

Low (≤0.30)
Low-medium (0.31-0.40)
Medium (0.41-0.60)
Medium-high (0.61-0.80)
High (≥0.81)
Aptian Genus:
-medium (Arundel and Ruby Ranch)
-low (Arundel and Cloverly)
Genus:
-low (Arundel and Ruby Ranch, Cloverly) (medium-high distance)
Family:
-medium-high (Arundel and Cloverly)
-medium (Arundel and Ruby Ranch)
Family:
-medium (Arundel and Ruby Ranch, Cloverly) (medium, low-medium distance)
Albian Genus:
-low (all eastern-western comparisons except w/ Willow Tank)
-N/A (Willow Tank)
Genus:
-low (all eastern-western comparisons except w/ Willow Tank) (high distance)
-N/A (Willow Tank)
Family:
-high (Dakota and Paluxy)
-medium-high (Dakota and Wayan)
-low-medium (Paluxy and Wayan, Willow Tank)
-low (Dakota and Blackleaf, Willow Tank; Paluxy and Blackleaf)
Family:
-medium (Dakota and Paluxy) (low-medium distance)
-low (Dakota and Blackleaf, Wayan, Willow Tank; Paluxy and Blackleaf, Wayan, Willow Tank) (medium-high, high distance)
Cenomanian Genus:
-low (all eastern-western comparisons)
Family:
-high (Woodbine and Mussentuchit)
-low (Woodbine and Dunvegan)
Genus:
-low (all eastern-western comparisons)
Family:
-medium (Woodbine and Mussentuchit)
-low (Woodbine and Dunvegan)
Turonian N/A N/A
Coniacian/Santonian Genus:
-low (all comparisons)
Genus:
-low (all comparisons) (high distance)
Family:
-high (Niobrara and Eutaw)
-medium high (Niobrara and Milk River)
-low-medium (Eutaw and Milk River)
Family:
-low-medium (Niobrara and Eutaw) (medium distance)
-low (Niobrara, Eutaw and Milk River) (medium-high distance)
Campanian Genus:
-low (all eastern-western comparisons; Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay” and Tar Heel-Coachman)
-medium-high (Tar Heel-Coachman and Marshalltown)
Genus:
-low (all eastern-western comparisons, Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay” and Marshalltown)
-low-medium (Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay” and Tar Heel-Coachman; Tar Heel-Coachman and Marshalltown)
Family:
-high (Mooreville Chalk- Blufftown-Coffee Sand-“Glenallen Clay” and Tar Heel-Coachman)
-medium-high (Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay” and Marshalltown; Tar Heel-Coachman and Marshalltown; Marshalltown and Judith River)
-medium (Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay” and Kirtland, Judith River, Oldman, Dinosaur Park; Tar Heel-Coachman and Judith River; Marshalltown and Kirtland, Oldman, Dinosaur Park)
Family:
-medium-high (Mooreville Chalk- Blufftown-Coffee Sand-“Glenallen Clay” and Marshalltown) (low distance)
-medium (Mooreville Chalk- Blufftown-Coffee Sand-“Glenallen Clay” and Tar Heel-Coachman; Tar Heel-Coachman and Marshalltown)
(low-medium distance)
-low (all eastern-western comparisons) (medium-high to high distance)
Maastrichtian Genus:
-low (all eastern-western comparisons)
Genus:
-low (all eastern-western comparisons) (high distance)
Family:
-medium (all eastern-western comparisons)
Family:
-low (all eastern-western comparisons) (medium-high, high distance)
Multiple Stages Genus:
-high (Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay” Eutaw)
Genus:
-low (Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay” Eutaw)
Family:
-high (Mooreville Chalk-Blufftown-Coffee Sand “Glenallen Clay” Eutaw)
Family:
-medium-high (Mooreville Chalk-Blufftown-Coffee Sand-“Glenallen Clay”-Eutaw)