Paratelecrinus orthotriremis Messing 2013

Paratelecrinus with 15 columns of cirrus sockets (3 per radial area); peripheral sockets small (0.4–0.8 mm tall); brachitaxes and proximal brachial pairs with moderately developed synarthrial swellings; Iax₂ hexagonal with parallel sides in smaller specimens, rhombic with narrower distal angle in large specimens; no thin, wing-like, lateral flanges. Lateral margins of Ibr₁ straight or slightly diverging.

South of Key West, FL, Bahama Islands, Yucatán Channel, Barbados and St. Vincent. The records from the Strait of Florida and Bahamas are from generally deeper water (seven records in 521–855 m; one trawl record in 458–531 m) than those from the Caribbean Sea (nine records in 392–496 m; one in 554 m). The much shallower record from off Arrowsmith Bank (177–200 m) reflects shoaling isotherms across the Yucatán Channel from the Cuban to Mexican sides associated with northward geostrophic flow of the Yucatán Current.