Table 2 Body parts known in hurdiids. Taxa analysed in the most recent phylogenetic analysis of radiodonts [16] in bold

Aegirocassis

X

X

X

Fezouata hurdiid

X

Hurdia triangulata

X

X

X

X

Hurdia victoria

X

X

X

X

Hurdia sp. B (Burgess)

X

Hurdia sp. B (Spence)

X

Hurdia cf. victoria (Spence)

X

Pahvantia

X

X

Peytoia infercambriensis

X

Peytoia nathorsti

X

X

X

X

Peytoia sp. (Balang)

X

Peytoia? (Burgess)

X

Schinderhannes

X

X

X

Stanleycaris

X

X

Ursulinacaris

X