Shell up to 20.8mm in length (holotype), broad, heavy. Spire moderately high. Protoconch unknown, partially broken, last whorl rounded. Teleoconch with 5 broad, strongly shouldered whorls. Suture impressed. Length/width ratio 1.48 (holotype). Subsutural ramp broad, very weakly sloping, lightly concave.
Shell off white, light brown or grey coloured on subsutural ramp.
Axial sculpture of first 3 teleoconch whorls with sharp varices; remaining teleoconch whorls with 4 strong, broad, rounded varices; each varix with a narrow, flat, short, strongly inwards pointed triangular, flat spine at adapical extremity. Anal tube adjacent to leading edge of varix and adpressed to previous laminar extension. Varices broader and swollen at shoulder periphery. Apertural varix with a broad, very weakly sinuous flange, attached to previous whorl by a broad laminar extension.
Dorsal part of varices, including siphonal canal, with strong spiral cords. Last whorl with 9 rounded cords, increasing in strength abapically. P1 with sealed, rounded anal tube near preceding varix. P2 with flat, triangular spine at intersection with varices, followed by s2, P3, s3, P4-P6, ADP, MP, ABP. Intervarical sculpture faint. Sealed rounded anal tube adpressed to laminar extension on preceding varix, forming an angle of approximately 80-90° with axis of shell. Spiral cords ending as very short, weakly backward curved spines at the edge of the apertural flange in the holotype (flange partly broken in paratype).
Aperture broadly ovate, forming a continuous peristome, erect at outer lip and abapical portion of columellar lip and adpressed adapically. Siphonal canal long, broad, ventrally sealed. Sutural line strongly shifted to the right, left side of canal broadly overlapping right side. Holotype ending with the siphonal canal dorsally curved at the extremity.

Typhina claydoni (Houart, 1988) from Port Hedland and Broome, Western Australia, differs from T. clarksoni n. sp. in having a smaller, more globose shell with broader, rounder, axial varices with strongly dorsally curved axial lamellae, a shorter spire and a strongly dorsally bent siphonal canal.

Material examined Western Australia, North of Exmouth, Northeast side of Peak Island, 27-29m, reef covered sparsely with small sponges and hard corals, 2 dd, holotype WAMS_29958; 1 para-type RH.
Type locality Western Australia, North of Exmouth, Northeast side Peak Island, 27-29m.
Distribution Only known from the type locality, dead collected.