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Table 5 Septal slope factor (short: slope) and intercept of ammonoid families covered in this study

From: Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position?

Family Slope Intercept
Arcestidae 0.0048 − 0.0639
Arietitidae 0.0012 0.0973
Asteroceratidae 0.0019 0.0019
Cladiscitidae 0.0123 − 0.1236
Cleoniceratidae 0.0028 − 0.0237
Dactylioceratidae 0.0027 − 0.0397
Desmoceratidae 0.0078 − 0.0345
Graphoceratidae 0.0013 0.0397
Hildoceratidae 0.0064 − 0.0103
Lytoceratidae 0.0085 − 0.0388
Macrocephalitidae 0.0041 − 0.027
Perisphinctidae 0.0037 − 0.0191
Phylloceratidae 0.0068 − 0.0076
Psiloceratidae 0.0041 0.0218
Schlotheimiidae 0.0036 − 0.0065