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Table 2 Species categorised after geographic origin and period with the corresponding septal slope factor (short: septal slope) and palaeolatitude (after Kocsis & Scotese, 2020)

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

Species

Origin

Latitude

Septal slope

Period

Arcestes sp.

Austria (Goisern)

45

0.0018

Late Triassic (Norian)

Cladiscites sp.

Timor

− 25

0.0147

Late Triassic (Norian)

Halorites sp.

Timor

− 25

0.0098

Late Triassic (Norian)

Megaphyllites sp.

Greece

40

0.0054

Late Triassic (Norian)

Discophyllites ebneri

Timor

− 25

0.0077

Late Triassic (Norian)

Monophyllites sp.

Timor

− 25

0.0067

Late Triassic (Norian)

Rhacophyllites neojurensis

Timor

− 25

0.0075

Late Triassic (Norian)

Psiloceras planorbis

Germany

50

0.0047

Early Jurassic (Hettangian)

Psiloceras naumanni

Austria (Schreinbach am Wolfgangsee)

45

0.0034

Early Jurassic (Hettangian)

Arietites sp.

Switzerland

50

0.0012

Early Jurassic (Sinemurian)

Asteroceras sp.

Germany/France

50

0.0019

Early Jurassic (Sinemurian)

Schlotheimia sp.

Germany (Nürnberg)

50

0.0036

Early Jurassic (Hettangian-Sinemurian)

Fuciniceras cf. isseli

Switzerland (Tessin, Arzo)

45

0.0064

Early Jurassic (Sinemur.)

Dactylioceras commune

Great Britain (Yorkshire)

50

0.0037

Early Jurassic (Toarcian)

Lytoceras fimbriatum

Germany (Schömberg b. Balingen)

50

0.0067

Early Jurassic

Leioceras sp.

France (Belmont d'Azergues)

50

0.001

Early/Middle Jurassic (Toarcian, Aalenian)

Ludwigia bradfordensis

Switzerland/Germany

50

0.0021

Middle Jurassic (Aalenian)

Staufenia opalinoides

Germany (Baden-Württemberg)

50

0.0004

Middle Jurassic (Aalenian)

Macrocephalites compressus

Switzerland (Anwil, Aargau)

45

0.0041

Middle Jurassic (Callovian)

Divisosphinctes besairei

Madagascar (Sakaraha)

− 20

0.0037

Late Jurassic (Oxfordian)

Argonauticeras besairei

Madagascar (Majunga)

− 40

0.0107

Early Cretaceous (Albian)

Cleoniceras sp.

Madagascar (Majunga)

− 40

0.0028

Early Cretaceous (Albian)

Desmoceras sp.

Madagascar (Majunga)

− 40

0.0078

Early Cretaceous (Albian)

Gaudryceras sp.

Madagascar (Majunga)

− 40

0.0124

Early Cretaceous (Albian)

Eogaudryceras umbilicostriatus

Madagascar (Majunga)

− 40

0.004

Early Cretaceous (Albian)