TABLE 1. Shell completeness data of RHf nautiloids compiled from glacial erratics occurring in the Lower Hudson Valley of New York and northern New Jersey Piedmont. RHf nautiloid analysis includes 129 specimens and recognizes two general forms that represent multiple species and include: 114 orthoconic (f1) and 15 coiled (f2) forms. The RHf nautiloid assemblage is reposited in the paleontological collections of the Department of Environmental Science, William Paterson University (WPU-ENVSCI-RHfNC:1-129).

Forms
(1) and (2)
Percent of total assemblage Average maximum diameter
(cm)
Average length
(cm)
Number of
camerae
Partial body chamber 14.2 4.58 ± σ = 1.45 10.18 ± σ = 6.08 none
Partial phragmocone 39.4 3.71 ± σ = 1.48 12.51 ± σ = 5.64 16.13 ± σ = 7.55
Partial body chamber attached to partial phragmocone 46.5 4.89 ± σ = 2.10 18.01 ± σ = 7.80 13.46 ± σ = 7.70