...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...

... intertidal environments, such as beach (burrowing shrimp, Callianassa major ), tidal flat (burrowing shrimp, Callianassa atlantica , and polychaete worms Onuphis and Diapatria ), marsh (fiddler crab, Uca ), estuarine channels (burrowing shrimp, Upogebia ), and sand flats (acorn worm, Balanaglossis ). Other...

...W. A. Pryor Abstract The feeding activities and excretory products of the marine decapods Callianasa and Upogebia and the marine annelid Onuphis have been studied in the natural environments of the southern Atlantic and eastern Gulf of Mexico coasts and in controlled aquarium experiments...

... worm Onuphis. Fuzzy texture seen thoughout core is result of bioturbation by a amphipods. Lens-shaped white areas are structures composed of mud. In both a and b mud fraction is result of fecal-pellet concentrations. ...

... (Table 1). In slightly more protected, moderate nergy settings, the lower 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...

... Skolithos is mainly interpreted as a domichnion structure made by polychaetes like Arenicola , Onuphis , Sabellaria and phoroids or annelids ( Schlirf and Uchman, 2005 ). Geological range is from Precambrian ( Alpert, 1975 ) to Holocene ( Dashtgard and Gingras, 2012 ). Ichnogenus:   Taenidium...

... 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. Figure 7 B–C Description...

... of the polychaete Onuphis, a modern analog of Skofithos. (Adapted from Howard and Frey, 1975.) Fig. 33. Varying degrees of bioturbation in well-stratified estuarine sediments. X-ray radiographic print of sediment peel from a box core, Georgia. Distinct burrows are white to light gray; mud is dark gray; fine sand...