...WAYNE A. PRYOR Abstract The feeding activities and excretory products of the marine decapod Callianassa major Say and the marine annelid Onuphis microcephala Hartman have been studied in shallow marine environments of the southern Atlantic and eastern Gulf of Mexico coasts of the United States...

... a core taken near the crest of a point bar, and Figure 5b a core from the flanks. The most obvious burrows in Figure 5b are the long, thin, sand-coated tubes of the polychaete Onuphis microcephala . Equally important in this core is the intense amphipod bioturbation (cf. Frey and Howard, 1969 , Pl...

... foreshore is inhabited by several additional ani- mals (Fig. 8B). Biogenic sedimentary structures include: vertical dwelling tubes of the polychaete Onuphis microcephala (Frey and Howard, 1969, Plate 2, fig. 2), an excellent analogue for the trace fossil Skolithos linearis; body-size burrows of the sea...

... to brackish environments ( Wightman et al., 1987 ; Pemberton et al., 2001 ). The living marine polychaetes Onuphis microcephala (see Curran and Frey, 1977 ; Belt et al., 1983 ) and Diopatra cuprea (see Barwis, 1985 ) are among the best modern analogues. Paleoenvironmental significance...