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Table 1 Summary of suggested ammonoid archetypes

From: Evolutionary tradeoffs, Pareto optimality and the morphology of ammonite shells

Suggested task

W

S

D

Archetype number

Economy of shell material

1.3

0.7

0.65

1

Hydrodynamic drag

1.55

0.2

0.04

2

Shell growth

4.6

0.3

0

3

Compactness + economy

1.6

3.2

0.5

4

Compactness + hydro.

1.07

1.8

0.01

5

  1. Coordinates of the archetypes found by the archetype analysis algorithms with 5-archetypes, along with their putative tasks.