...FIGURE 9 —Ranges of selected arthropod-derived trace fossils and of selected species of Cruziana . Cruziana range includes that of Isopodichnus (see text). “ Isopodichnus ” is not shown separately, but is included with Cruziana in the ichnogenus column and with Cruziana tenella...

... , Isopodichnus , Palaeophycus , Planolites , ? Rhizocorallium cf. R . irregulare , Rusophycus , Teichichnus cf. rectus , Tomaculum and Trichichnus are described in detail. Miscellaneous traces, those not morphologically distinct and (or) sufficiently abundant to warrant formal taxonomic treatment, are briefly...

...L. B. Clemmensen Abstract The Middle Triassic Edderfugledal Member of East Greenland is interpreted as lacustrine because of: (A) nonmarine fossils such as conchostracans and small bivalves, (B) non-marine trace fossils such as Isopodichnus , Cruziana , Pelecypodichnus and Fuersichnus , (C...

... produced by crustaceans. Several slabs are covered with hundreds of tiny isolated bilobed resting traces, 1–3 mm long, similar to Isopodichnus minutus Debriette and Gand, 1990, which were probably produced by very small crustaceans or ostracodes. Other rare invertebrate traces consist of paired...

...Figure 12 —Bioturbation intensity: 1, rippled sandstone beds with slight bioturbation (BI = 1–3); 2, moderate bioturbation with abundant Isopodichnus isp. (BI = 3); 3, high bioturbation (BI = 4); 4, very high bioturbation (BI = 5). All examples come from the Presto-El Peral section...

... not cluster well because complex, overlapping environmental gradients occur in nearshore facies (Rhoads, 1975; Frey and Pemberton, 1984, p. 199; Howard and Frey, 1984). The NTSYS statistical package (Rohlf et al., 1974; Rohlf, 1985) used the unweighted pair-group average method (Davis, Isopodichnus Rest...

... Sediment Transport and Environmental Management 1976 New York Wiley 311 50 Trewin N. H. Isopodichnus in a trace fossil assemblage from the Old Red Sandstone Lethaia 1976 9 29 37 Trewin N. H. Transported graptolites and associated tool marks from Grieston Quarry...

... was synonymized with Ophiomorpha annulata Ksiazkiewicz by Uchman (1995) ; Muensteria is used instead of the generally accepted Taenidium (but D’Alessandro & Bromley (1987 ) is listed in the references); and Isopodichnus is used instead of Rusophycus (while Bromley & Asgaard (1972 ) is listed...

..., but can be abundant on some bedding surfaces (Isbell et al., 2001 ). Arthropod-produced traces are represented by a single ichnogenus— Isopodichnus , which is a feeding trace generally attributed to concostracan crustaceans (Pollard, 1985 ). No arthropod-produced walking trails have been reported from...

... elements in their morphologies. In contrast to inorganic sedimentary structures, the T1 traces have a similar morphology to the ‘short resting trace’ type described from the Lower Stromness Flags of Orkney, although these are half the size and are part of an Isopodichnus ( =  Rusophycus ) assemblage...

... ) are not similar to the bilobate ornamented structures described herein. In any case, the ichnogenus Isopodichnus which has been used in the past to refer to small bilobate hyporeliefs (now included in the ichnogenus Cruziana and Rusophycus) has often been attributed to isopods (e.g., Pollard, 1985 ; Gingras et...

... Isopodichnus of probable arthropod origin. An early Devonian ichnofauna from the Ousdale Mudstones includes seven genera probably produced by arthropods ( Trewin 1993 b ), and other arthropod-related traces are known from the Moray Firth Coast ( Trewin and Kneller 1987 ; Carroll 1990 ). Three groups...

... of facies G and is abruptly overlain by the cryptalgal laminated carbonate mudstone of facies I. Facies H is characterized by a moderately diverse Psilonichnus trace fossil assemblage (Frey and Pemberton, 1985), consisting of Skolithos, Palaeophycus, Isopodichnus and an, as yet, undescribed type of bivalve...

..., and the appendage imprints have negative epirelief. Brady (1947) recorded Oniscoidichnus (as “ Isopodichnus Brady 1947 ”) from the same ichnofossil assemblage as Paleohelcura —this also is the case with the Ringerike samples. Three specimens of Oniscoidichnus have been found, all within very fine-grained...