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

Swiss Journal of Palaeontology

Table 8 Linear correlation matrix of the septal slope factor and the main abiotic environmental factors

	Septal slope factor	CO₂	Latitude S/N	pH
SlopeFactor		0.021551	0.00259	0.087074
CO₂	0.45727		0.008765	1.64E–05
Latitude S/N	− 0.57592	− 0.51278		0.000204
pH	0.34922	0.74909	− 0.67665