... pelagornithid from the late Oligocene/early Miocene, and one of the few bony-toothed birds from this time period in general. The new fossil is from the Nye Mudstone and shows some previously unknown features that contribute to a better understanding of the osteology of pelagornithids. Because Paleogene and late...

..., and three new taxa are described from the Newport embayment, Oregon, from the Yaquina Formation and Nye Mudstone. GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States 1966 ...

...” similar to Kolponomos newportensis . This combination of mollusks and mammals is elsewhere known only from latest Oligocene rocks correlative with Chron C6Cr (24.1–24.8 Ma), such as the Nye Mudstone near Astoria, Oregon, and the uppermost Pysht Formation and lowermost Clallam Formation in the northwest...

... mudstone, in turn overlain by a c. 2 km thick succession of mainly platformal, peritidal and sabkha dolostone. The Dismal Lakes Group is capped by thick flood basalt flows of the 1270 Ma Coppermine River Group ( LeCheminant and Heaman 1989 ). Existing U–Pb geochronology constrains the main regional...

... sichelwannen. These features are interpreted as Nye channels and sculpted forms eroded by subglacial meltwaters. Sandstone-filled cracks exposed at the unconformity are viewed as periglacial frost fissures. An overlying conglomerate facies 1–15 m thick at the base of the c . 1800 Ma King Leopold Sandstone...

... and accumulation potential. The middle-lower Jurassic coal-bearing mudstone is gas prone, while the mudstone of the Callovian-Oxfordian gap layer is oil prone, and the organic matter type of Callovian-Oxfordian carbonate rocks is the mixed type between the two previous source rocks. The interpretation schemes...

... extension, so no reliable stratigraphic section is preserved. The rock assemblage, however, is similar to that at Secret Pass in northern Bare Mountain and consists of interbedded black siliceous argillite, chert-lithic sandstone, lime mudstone, bioclastic grainstone and wackestone, and some olive shale...

...Figure 1. Taphonomy of the meniscate structure. A: Preservation of a backfilled burrow in flint, lower Danian chalk of Nye Kløv, northeastern Jylland, Denmark ( Bromley and Ekdale, 1984 , their Fig. 4A). B: Preservation of a meniscate structure in silicified finely laminated calcitic mudstones...

... core are shown. SL = Shell lineament ; NBL = Nye-Bowler lineament . Historically, the region of eastern Wyoming and western Colorado and farther north into eastern Alberta and Saskatchewan is known for the preservation of several apparently isolated sandstone bodies of shallow...

... sequence is comprised of 282 feet (86 m) of alternating sandstone and mudstone layers. The sandstone layers typically have abrupt bases and gradational tops, and the mudstone units show weak soil development. The top of the paleosol series that separates the D2 sequence from the underlying D1 sequence...