Table 2.
Body mass estimates (g) of extinct and extant mystacinids from New Zealand (NZ) and Australia (Aus) based on equations in Gunnell et al.22 and using the proxies of upper first molar (M1) area, lower first molar (m1) area, and humerus mid-shaft diameter.
| Taxon | Location | Age | Body mass estimate | Live weight | ||
|---|---|---|---|---|---|---|
| M1 | m1 | humerus | ||||
| †Vulcanops jennyworthyae 1 | NZ | E Miocene | 42.6 (1) | 39.8 (1) | — | — |
| †Mystacina miocenalis 2 | NZ | E Miocene | 39.3 (1) | — | — | — |
| †Mystacinid indet. 13 | NZ | E Miocene | — | — | 114.33 (1) | — |
| Mystacina tuberculata 4 | NZ | Holocene | 12.77 (20) | 14.28 (20) | 112.23 (5) | 13.6 (300) |
| Mystacina robusta 5 | NZ | Holocene | 22.90 (12) | 22.19 (12) | 117.70 (1) | — |
| †Icarops paradox 6 | Aus | E Miocene | 8.43 (2) | 10.31 (1) | — | — |
| †Icarops aenae 7 | Aus | L Oligo-E Mio | 17.74 (2) | 21.52 (1) | 115.07 (2) | — |
| †Mystacinid indet.8 | Aus | L Oligocene | 11.34 (1) | — | — | — |
† Indicates extinct taxon; E, Early; L, Late; (#), number of specimens. Humerus mid-shaft measured in this work. Dental and weight data from: 1, this paper (Table 1); 2,30; 3,28; 4,87 (Codfish Is),73; 5, 30,87 (Stewart Is); 6 & 7,27; 8,45. No estimates available for Icarops breviceps (known from m2-3;26) but tooth size similar to I. aenae 27, nor Mystacinid indet. 2 but distal humerus is smaller than in Mystacinid indet. 128.