TABLE 2. k-means habitat type assignment. Given the PD's lithological data we accordingly assigned each observation to one of 40 habitat types using k-means clustering (see also Appendix). "int." indicates interdistributary and "sst" indicates sandstone.2 k-means habitat type assignment. Given the PD's lithological data we accordingly assigned each observation to one of forty habitat types using k-means clustering (see also Appendix). int. indicates interdistributary and sst indicates sandstone.

  Observation
 Depositional Environment
 Depth (m)
 Primary & Secondary Lithology
 Sand (%)
 Silt (%)
 Clay (%)
 Lime Mud (%)
 Hab. Assgn.
  C. pygmaea
 offshore
 200
 siltstone only
 0
 0
 83.3
 16.7
 27
  C. pygmaea
 offshore
 200
 shale only
 0
 0
 33.0
 67.0
 38
  E. ovatus
 shoreface
 15
 sandstone only
 100
 0
 0.0
 0.0
 16
  G. vulcanica
 int. bay
 0
 mudstone & sst
 28
 8
 35.6
 35.6
 35