Tab 3.

Calculated dimensions of Megateuthis body parts, based on different model assumptions

Species	S98-N22	Kea-N22	S98-D02	Kea-D02	Z31-N22	Z31-D02
	M. elliptica	M. elliptica	M. elliptica	M. elliptica	M. suevica	M. suevica
Dphr	20 cm	15 cm	20 cm	15 cm	15 cm	15 cm
Lr	80 cm	70 cm	80 cm	70 cm	51 cm	51 cm
alpha	20°	20°	20°	20°	20°	20°
Ppp	1.00	1.00	0.78	0.78	1.00	0.78
Prc	0.3	0.3	0.3	0.3	0.3	0.3
Ph	0.12	0.12	0.12	0.12	0.12	0.12
Pa	0.64	0.64	0.64	0.64	0.64	0.64
Pr	0.45	0.49	0.49	0.53	0.41	0.45
Lphr	56.7 cm	42.5 cm	56.7 cm	42.5 cm	42.5 cm	42.5 cm
Lrc	17.0 cm	12.8 cm	17.0 cm	12.8 cm	12.8 cm	12.8 cm
Lpo	56.7 cm	42.5 cm	44.2 cm	33.2 cm	42.5 cm	33.2 cm
Lm	176.4 cm	142.3 cm	163.9 cm	133.0 cm	123.3 cm	114.0 cm
Lh	21.2 cm	17.1 cm	19.7 cm	16.0 cm	14.8 cm	13.7 cm
La	112.9 cm	91.1 cm	104.9 cm	85.1 cm	78.9 cm	72.9 cm
Total	310.5 cm	250.5 cm	288.5 cm	234.0 cm	217.0 cm	200.6 cm

Parameters in bold are calculated, see text for details. Models are labled as follows: S98 = maximum values given by Schlegelmilch (1998) for rostrum length and phragmocone diameter; Con = more conservative estimates found in this study. Z31 = specimen of Zieten (1831); N22 = Proostracum proportion given by Naef (1922); D02 = Proostracum proportion given by Doguzhaeva et al. (2002)

D_phr phragmocone diameter; L_r rostrum length; alpha apical angle of phragmocone; P_pp Proportion between

proostracum and phragmocone; P_rc Proportion of rostrum cavum compared to phragmocone; Ph proportion of head compared to mantle length; Pa = proportion of arms compared to mantle length; Pr proportion of rostrum compared to complete hard parts; L_m mantle length; L_phr phragmocone length; L_rc rostrum cavum length; L_po Proostracum length; L_h head length; L_a arm length