FIGURE 1. Balayevicrinus latipinnulus, specimen USNM 1005436. A in Crinoids of the stalked family Hyocrinidae (Echinodermata) collected by the USNS Eltanin in the Southern Ocean

FIGURE 1. Balayevicrinus latipinnulus, specimen USNM 1005436. A: fragment of theca with one proximal arm of three brachial pairs and proximalmost brachial pair of another arm (or: oral, R: upper part of broken radial, tp: tegminal plates); B: fragment of theca with the anal sac in external position; C: fragment of proximal arm (5+6 7+8+9+10) with first pinnule (P1) on Br6; D: proximal proxistele (B: basal ring); E–F: Isolated brachial triplet with proximalmost pinnular broken (arrow) and festooned arrangement of cover plates (cv: cover plates, lp: lateral plates); G: Distal facet of Br4 (muscular synarthry); H: Distal facet of Br5 (synostosis); I: oblique view of Br6 distal facet with pinnule socket.Published as part of Roux, Michel, 2015, Crinoids of the stalked family Hyocrinidae (Echinodermata) collected by the USNS Eltanin in the Southern Ocean, pp. 381-409 in Zootaxa 3990 (3) on page 384, DOI: 10.11646/zootaxa.3990.3.4, http://zenodo.org/record/24304