From Fensome et al., 2019:
Diphyes recurvatum May, 1980, p.50–51, pl.1, figs.18–20. Holotype: May, 1980, pl.1, figs.18–20. Age: Maastrichtian.

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Locus typicus: Atlantic Highlands, New Jersey
Stratum typicum: Navesink Formation, Campanian-Maastrichtian

Original description: May, 1980, p.50-51
Cyst sphaeroidal; bilayered, endophragm and periphragm closely appressed; endophragm (ca. 1 µm thick) appears smooth; periphragm (less than 1 µm thick) faintly microreticulate on main body, formed into long (ca. 15 µm) slender (ca. 1 µm diam.), tapering, hollow, distally open, and finely striate or fibrous processes bearing distally trifurcate and recurved prongs. Tabulation difficult to determine; five rows of slender processes are aligned parallel to equator and may express tabulation. A single large hollow and distally open process (ca. 6 µm diam. at mid-length; ca. 15 µm long) is located at the antapical position. The large antapical process bears small lateral tubules and spines at the distal end. A cingulum may be indicated by the middlemost row of slender processes. No sulcus observed. Archeopyle is apical (Type A).

Affinities:
May, 1980, p.51: D. recurvatum differs from other species of this genus by having slender processes which taper distally, then trifurcate as three recurved prongs.
Dimensions: Holotype L x W (main body): 35 x 35 µm. Process length up to 15 µm. Observed range (2 specimens measured) same as holotype.