Table 1 Measurements of ovigerous specimens of †C. ovata and †W. fieldensis.

Abbreviations: Ave D, average diameter of eggs; Bl, body length (measured from the anterior end of carapace to the posterior end of tail fan); Ch, carapace height; Cl, carapace length; Cs, carapace surface area (one valve); Es, carapace surface area covered by preserved eggs; Es/Cs, ratio of Es to Cs; Max D, maximum diameter of eggs; Min D, minimal diameter of eggs; N, number of eggs preserved; *, extrapolated measurement.

SpecimenSectionNMin D
(mm)
Max D
(mm)
Ave D
(mm)
Bl (mm)Cl (mm)Ch (mm)Es (mm2)Cs (mm2)Es/Cs (%)
C. ovata
ELEL-
SJ081254
Sanjiezi500.4050.5880.52022.509.886.5610.6250.9520.84
ELEL-
MF140101
Mafang380.4350.6170.55422.859.806.407.5146.2616.23
YRCP 0010Ercaicun360.4000.5500.48923.009.606.666.7650.6713.34
ELEL-
EJ081702
Erjie>180.4430.6060.53027*12*7.85>4.069*>5.7
W. fieldensis (11)
ROMIP
63357
Walcott
Quarry
132.252.622.463.720.7?58.8288*20.4
ROMIP
63354
Walcott
Quarry
122.062.362.1860*19.617.044.828016.0