Age groups in relation to sex based on the distal breadth of the metapodials.

* Sex estimation on three metacarpals (S1 Table: Id 226, 342 and 414) and one metatarsal (S2 Table; Id 214) is based on previous biomolecular analysis (see S1 and S2 Tables and Telldahl et al., 2012).
The border zone (no sex) between cows and oxen/bulls is from 53.5 to 54.5 mm for the metacarpals and between 50.5 and 52 mm for the metatarsals, according to Telldahl et al. (2012).

针对3块掌骨（metacarpals，对应S1表编号226、342与414）及1块跖骨（metatarsals，对应S2表编号214）进行的性别鉴定，其依据为既往生物分子分析结果（详见S1、S2表及Telldahl等2012年的研究）。
据Telldahl等（2012）的研究，母牛与公牛/阉牛之间的掌骨性别分界模糊区（无明确性别判定结果）为53.5 mm至54.5 mm，跖骨的对应区间则为50.5 mm至52 mm。