... with derivation from the Mulgrave Shale Member of the Whitby Mudstone Formation. The specimen is the first in-situ jaw apparatus to be reported for this genus from Britain. A second loose specimen, a Harpoceras sp. with in-situ aptychus was found and photographed at Deepgrove Wyke, but was too friable...

... PALAIOS, 1996, V. 11, p. 97-117 but may intermittently have been boosted by irregular upwelling of nutrient-rich intermediate and bottom-waters. Belemnite rostra from the Grey Shale and Jet Rock Mem- bers of the Lower Toarcian Whitby Mudstone Formation (England) record fluctuations in oxygen and carbon...

...Figure 6 Natural fractures in the Whitby Mudstone Formation at Port Mulgrave. (A) Lower hemisphere, equal area stereoplot showing bed-parallel fractures within Bituminous shale ( n = 7). (B) Lower hemisphere, equal area stereoplot showing subvertical fractures within the Jet rock and Bituminous...

...D. A. Gunn; J. E. Chambers; P. R. N. Hobbs; J. R. Ford; P. B. Wilkinson; G. O. Jenkins; A. Merritt Abstract The Whitby Mudstone Formation has one of the highest landslide densities in the UK with 42 landslides per 100 km 2 . Landsliding at Hollin Hill in North Yorkshire, UK is complex...

...Fig. 3. NHM TF 100019, Whitby Mudstone Formation, Ketton Quarry, East Midlands (Lower Jurassic, Toarcian). Note the position of the diagonal crack in both images. ( A ) Fustiglyphus annulatus   Vialov, 1971 . This burrow is presented in its other inferred life position, about 45⁰ to bedding...

... possible skull material, are represented only by isolated bones, none identifiable with certainty. The small limestone boulder in which the ichthyosaur specimens are preserved was collected from the beach at Sandsend, near Whitby, North Yorkshire, and derives from the Whitby Mudstone Formation ( Hildoceras...

... derivation of the specimens is unknown, but their location suggests that they are likely to be from the Whitby Mudstone Formation in the upper Lias Group of the Lower Jurassic. The specimens from Saltwick Bay extend the record of predated ammonites to the Lower Jurassic of North Yorkshire. deltapodus...

..., the Jet Rock Member of the Whitby Mudstone Formation, and the pebble shale and Hue Shale). This study was initiated to determine how organic carbon-rich materials were being delivered to the sediment–water interface, and what happened to them after deposition, prior to deep burial. Analyses of the fabrics...

... to the ammonite Dactylioceras cf. athleticum from the Alum Shale Member of the Whitby Mudstone Formation of Yorkshire. An example of D. infraoolithica attached to the bivalve Dacryomya reveals previously unreported fine curved ridges on the pedicle valve. Discinisca spp. probably attached to the ammonite shells...

...Fig. 5. Six key bivalve species found in the Whitby Mudstone Formation, Yorkshire, UK. (See Fig. 3 for bed numbers.) All scale bars represent 1 cm. ( a ) Convex valve of Bositra radiata with shell material; this specimen is from 39 cm below the upper bed 33 nodules at Port Mulgrave. ( b...