Parahaentzschelinia ardelia Chamberlain, 1971

Description.-Full relief and epirelief structure of endogenic burrow. Numerous small, irregular, mud and sand filled tubes radiating vertically and obliquely upward to sediment surface. Galleries 1.5 mm wide, penetrate 15 to 20 mm into sand. Surface patterns 15 to 60 mm across. Apex of inverted conical structure with a narrow lateral (?) gallery. Conical depression left on upper surface of some sandstone beds where mud filled tubes have been extensively developed.