Sediment depth is given in mbsf. Species abundance estimates as follows: A = abundant, F = few, R = rare, + = single specimen, - = searched for but not found, and ? = dubious...
Distance is the distance below (-) and above the K/T boundary. Taxon abundance estimated as a percentage of total fauna: + (rare) = <2 %, F (few) = 2-4 %, C (common) = 5-10 %, A (abundant) = >10