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Text-fig. 4. Sedimentological log of the Main Cenoceras Bed and associated strata in the Quantocks Beds (Lyra Subzone) at Helwell Bay, Doniford (measured at NGR ST 0802 4314 and ST 0336 4305). BGS bed no. refers to bed numbers employed in Whittaker and Green (1983). in 'Cenoceras Islands' In The Blue Lias Formation (Lower Jurassic) Of West Somerset, Uk: Nautilid Dominance And Influence On Benthic Faunas

Text-fig. 4. Sedimentological log of the Main Cenoceras Bed and associated strata in the Quantocks Beds (Lyra Subzone) at Helwell Bay, Doniford (measured at NGR ST 0802 4314 and ST 0336 4305). BGS bed no. refers to bed numbers employed in Whittaker and Green (1983).

Text-fig. 7. a. Worn section through a horizontally bedded body-chamber and phragmocone, body-chamber showing oyster attached to inside of aperture as well as burrow mottling. Tape measure provides scale. b. Body-chamber and crushed phragmocone with body-chamber and phragmocone entirely filled with bioturbated matrix containing stringers of crinoid and molluscan debris. Flank of phragmocone encrusted by oysters. Tape measure for scale. c. Complex of Thallassinoides and Diplocraterion burrows associated with conch that has been eroded out by wave action. A few 'Ghostly' fragments of ammonite are also present. Original scope of the image approximately 400 mm. c. Verically embedded conch with largely intact septa and camera infilled with burrowed matrix containing crinoid debris. Tape measure for scale. in 'Cenoceras Islands' In The Blue Lias Formation (Lower Jurassic) Of West Somerset, Uk: Nautilid Dominance And Influence On Benthic Faunas

Text-fig. 7. a. Worn section through a horizontally bedded body-chamber and phragmocone, body-chamber showing oyster attached to inside of aperture as well as burrow mottling. Tape measure provides scale. b. Body-chamber and crushed phragmocone with body-chamber and phragmocone entirely filled with bioturbated matrix containing stringers of crinoid and molluscan debris. Flank of phragmocone encrusted by oysters. Tape measure for scale. c. Complex of Thallassinoides and Diplocraterion burrows associated with conch that has been eroded out by wave action. A few 'Ghostly' fragments of ammonite are also present. Original scope of the image approximately 400 mm. c. Verically embedded conch with largely intact septa and camera infilled with burrowed matrix containing crinoid debris. Tape measure for scale.

Text-fig. 8. a. Shell belonging to one flank of the conch a horizontally bedded individual with sveral large oysters attached to its underside indicating that the shell was either originally vertical or was flipped from one surface to the other by turbulance. Approximately 300 mm across. b. Crushed individual showing oysters encrusting both flanks of the conch. 250 mm in diameter. c. Wave-worn conch showing oysters attached to the umbilicus, the venter and possibly the inside of the body-chamber. Tape measure for scale. d. Flank of conch with crinoid debris and oysters spread around its periphery. Scope of image approximately 350 mm. in 'Cenoceras Islands' In The Blue Lias Formation (Lower Jurassic) Of West Somerset, Uk: Nautilid Dominance And Influence On Benthic Faunas

Text-fig. 8. a. Shell belonging to one flank of the conch a horizontally bedded individual with sveral large oysters attached to its underside indicating that the shell was either originally vertical or was flipped from one surface to the other by turbulance. Approximately 300 mm across. b. Crushed individual showing oysters encrusting both flanks of the conch. 250 mm in diameter. c. Wave-worn conch showing oysters attached to the umbilicus, the venter and possibly the inside of the body-chamber. Tape measure for scale. d. Flank of conch with crinoid debris and oysters spread around its periphery. Scope of image approximately 350 mm.

Text-fig. 9. a. Shorn-off, vertically embedded conch surrounded by layer of crinoid debris at level of planation of shell and with some debris within the conch at this level. Lateral width of body-chamber 80 mm. b. Example of ammonite that occurs rarely in the Main Cenoceras Bed. Note the poorly defined shell particularly on the outer whorl, suggesting partial dissolution. Tape measure for scale. in 'Cenoceras Islands' In The Blue Lias Formation (Lower Jurassic) Of West Somerset, Uk: Nautilid Dominance And Influence On Benthic Faunas

Text-fig. 9. a. Shorn-off, vertically embedded conch surrounded by layer of crinoid debris at level of planation of shell and with some debris within the conch at this level. Lateral width of body-chamber 80 mm. b. Example of ammonite that occurs rarely in the Main Cenoceras Bed. Note the poorly defined shell particularly on the outer whorl, suggesting partial dissolution. Tape measure for scale.

Text-fig. 3. Eastern wall of Jirásek's Quarry with studied section, with light-grey Acanthopyge Limestones in lower half of the wall, the UDI (in brown) in upper half followed by bioclastic breccia (Bed 46 sensu Hladil 1993) near the edge of the wall (a) and detail of UDI and adjacent limestones with the most productive beds (b). Photo January, 2019. in Rhynchonelliform Brachiopods And Trilobites Of The 'Upper Dark Interval' In The Koněprusy Area Devonian, Eifelian, Kačák Event; The Czech Republic

Text-fig. 3. Eastern wall of Jirásek's Quarry with studied section, with light-grey Acanthopyge Limestones in lower half of the wall, the UDI (in brown) in upper half followed by bioclastic breccia (Bed 46 sensu Hladil 1993) near the edge of the wall (a) and detail of UDI and adjacent limestones with the most productive beds (b). Photo January, 2019.

Text-fig. 2. General geological map of the Emsian (Suchomasty Limestone) and Eifelian (Acanthopyge Limestone) rocks at Zadní Kobyla ridge with marked Calceola- and trilobite-bearing locality. Modified after Svoboda and Prantl (1949) and Mergl (2014). in Trilobite Assemblage Of Calceola -Bearing Beds In Acanthopyge Limestone (Choteč Formation, Middle Devonian, Eifelian, Prague Basin, The Czech Republic)

Text-fig. 2. General geological map of the Emsian (Suchomasty Limestone) and Eifelian (Acanthopyge Limestone) rocks at Zadní Kobyla ridge with marked Calceola- and trilobite-bearing locality. Modified after Svoboda and Prantl (1949) and Mergl (2014).

Text-fig. 5. A pie chart of trilobite taxa abundance at Zadní Kobyla – small quarry outcrop (Calceola-bearing locality). in Trilobite Assemblage Of Calceola -Bearing Beds In Acanthopyge Limestone (Choteč Formation, Middle Devonian, Eifelian, Prague Basin, The Czech Republic)

Text-fig. 5. A pie chart of trilobite taxa abundance at Zadní Kobyla – small quarry outcrop (Calceola-bearing locality).

Text-fig. 1. Sketch map of the Devonian of the Prague Basin, and generalised stratigraphy of the Koněprusy Limestone (Pragian), Suchomasty Limestone (Upper Emsian), Acanthopyge Limestone (Eifelian) and the top of the Acanthopyge Limestone and the Srbsko Formation (transition Eifelian-Givetian) in the Koněprusy area (with marked neptunian dykes and approximate positions of Calceola-bearing limestone beds). Modified after Chlupáč et al. (1986), Hladil et al. (1992) and Mergl (2014). in Trilobite Assemblage Of Calceola -Bearing Beds In Acanthopyge Limestone (Choteč Formation, Middle Devonian, Eifelian, Prague Basin, The Czech Republic)

Text-fig. 1. Sketch map of the Devonian of the Prague Basin, and generalised stratigraphy of the Koněprusy Limestone (Pragian), Suchomasty Limestone (Upper Emsian), Acanthopyge Limestone (Eifelian) and the top of the Acanthopyge Limestone and the Srbsko Formation (transition Eifelian-Givetian) in the Koněprusy area (with marked neptunian dykes and approximate positions of Calceola-bearing limestone beds). Modified after Chlupáč et al. (1986), Hladil et al. (1992) and Mergl (2014).

opencc-by-4.0Mar 2006View details →

Fig. 1 in Fallen leaves on the water-bed: diurnal camouflage of three night active fish species in an Amazonian streamlet

Fig. 1. Habitat and aspect of three root-tangle and leaf-litter inhabiting fish species photographed underwater in an Amazonian streamlet: Tetranematichthys quadrifilis (77.7 mm SL, INPA 25107, top right), Steatogenys duidae (129.2 2 mm TL, INPA 25018, bottom left), and Helogenes marmoratus (59.8 mm SL, INPA 25111, bottom right).

opencc-by-4.0Mar 2006View details →

Fig. 2 in Fallen leaves on the water-bed: diurnal camouflage of three night active fish species in an Amazonian streamlet

Fig. 2. Three leaf-shaped and cryptically colored fish species photographed underwater lying on their sides, and one escape response out of the root-tangle: Steatogenys duidae (top left), Helogenes marmoratus (top and bottom right), and Tetranematichthys quadrifilis (bottom left). Note body shape and color resemblance to dead leaves in the three species, as well as the fore body of H. marmoratus above the water surface in the bottom right picture (mauve asterisk).

opencc-by-4.0Sep 2005View details →

Fig. 1 in Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil

Fig. 1. Relationship between mouth gape (a) and prey size (b) with total length (in mm) of female (open circles) and male (dots) individuals of the southern pipefish Syngnathus folletti.

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Fig. 3 in Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil

Fig. 3. Conceptual diagram showing the microhabitat distribution within the Widgeon grass bed of some benthic macroinvertebrates consumed by Syngnathus folletti. Gastropoda: 1. Heleobia australis; Tanaidacea: 2. Kalliapseudes schubartii, 3. Tanais stanfordi; Isopoda: 4. Dies fluminensis, 5. Uromunna peterseni; Amphipoda: 6. Mellita mangrovi.

opencc-by-4.0Feb 2016View details →

FIG. 6. A. IGM 100 in A new specimen of the ornithischian dinosaur Haya griva, cross-Gobi geologic correlation, and the age of the Zos Canyon beds

FIG. 6. A. IGM 100/3181.Two carpals in unknown orientation. B. Metacarpal I and manual phalanx I-1 in dorsal view. C. Metacarpal II or III and manual phalanx in dorsal view. D. Manual phalanx in dorsal view. E. Three ungual phalanges in partial dorsal view.

opencc-by-4.0Oct 2022View details →

Influence of feature size and shape on corrosion of 316L lattice structures fabricated by laser powder bed fusion

An open dataset for the paper with the same title: "Influence of feature size and shape on corrosion of 316L lattice structures fabricated by laser powder bed fusion". The dataset contains, for example, 3D models, original and analyzed microCT data, video visualizations, tensile testing .csv files, microscopy images, and code resources. Selected works are presented as part of the paper. Abstract: Laser powder bed fusion (LPBF) has become an established method for manufacturing end-use metal components. Exploiting the geometric freedom of additive manufacturing (AM) offers broad possibilities for part optimization and enables performance enhancements across industry sectors. However, part shape and feature size have been found to locally affect residual stresses, melt pool cooling rates, microstructure, and thus the mechanical properties of components. Even though the mesoscale structure can locally induce microstructural changes, there are no prior studies on how it influences corrosion. Using AM-produced, optimized parts in critical applications necessitates a better understanding of their long-term performance. In this study, lattice structures were used to probe the influence of feature size and shape on corrosion susceptibility and its spatial localization. The susceptibility of submillimeter LPBF-fabricated 316L stainless steel lattice structures to corrosion was investigated by conducting a 21-day immersion corrosion test in an aqueous 3.5wt% NaCl solution. Schoen gyroid and Schwarz diamond triply periodic minimal surface lattices were manufactured with three unit cell sizes and wall thicknesses (0.867, 0.515, and 0.323 mm). The nominal surface and cross-sectional areas were the same for the two geometries. X-ray microcomputed tomography (microCT) scans before and after the corrosion test were compared for volumetric losses. In addition, the mechanical properties and microstructure of the samples were evaluated. As part of the study, a workflow to register, index, and analyze volumetric changes of consecutive microCT image stacks was developed. The method is fully reported and applicable to time-lapse studies with microCT. Three out of five of the 0.323 mm wall thickness lattices displayed visually aggressive pitting. Based on the microcomputed tomography data, the mass losses were localized either in the entrapped powder particles or partially melted surface globules. Corrosion did not occur in the dense base material. The total mass losses ranged from 8 to 19 mg. Despite visual indications to support a higher corrosion susceptibility for the smallest lattice sizes, the mass loss values did not confirm this conclusion. The tensile test results did not provide any clear indications of latent corrosion effects on mechanical properties.   Version 1.1: 'Microstructure.zip' was revised. Metallographic preparation and Beraha II etching was redone for selected samples. New images and grain size (and grain distribution) measurements were added. Version 1.2: 'CT_Data_Heatmap_example.zip' was added.

opencc-by-4.0Dec 2022View details →

Text-fig. 1. The Catefica exposure along the road between Catefica and Mugideira photographed in 1989 when the mesofossil flora was discovered. The exposed strata are mainly cross-bedded light colored sands, darker horizons of clay and dark lenses with mesofossils. The most productive sample, Catefica sample 49, was collected in the basal part of the exposed sequence (arrow head). One of the authors (PRC) exploring the middle part of the section. Photo K. R. Pedersen. in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Text-fig. 1. The Catefica exposure along the road between Catefica and Mugideira photographed in 1989 when the mesofossil flora was discovered. The exposed strata are mainly cross-bedded light colored sands, darker horizons of clay and dark lenses with mesofossils. The most productive sample, Catefica sample 49, was collected in the basal part of the exposed sequence (arrow head). One of the authors (PRC) exploring the middle part of the section. Photo K. R. Pedersen.

Fig. 17. Chelopterum peregrinum Carpenter, 1950 in The entomofauna of the Lower Permian fossil insect beds of Kansas and Oklahoma, USA

Fig. 17. Chelopterum peregrinum Carpenter, 1950 (Grylloblattida: Protoperlina: Chelopteridae), originally described from Elmo: (A) Photograph of fore wing of a specimen collected by the authors from the Midco beds, scale bar 5 mm; (B) Original drawing by Beckemeyer based on reconstruction by Carpenter (1992); (C) Original drawing by Beckemeyer of the insect as it might have appeared in life, with wings folded.

Fig. 16 in The entomofauna of the Lower Permian fossil insect beds of Kansas and Oklahoma, USA

Fig. 16. Fore wing of Stereopterum rotundum Carpenter, 1950 (Grylloblattida: Lemmatophorina: Euryptilonidae), collected in March, 2004 from the Midco beds. An example of a species known only from its fore wing.

Fig. 15 in The entomofauna of the Lower Permian fossil insect beds of Kansas and Oklahoma, USA

Fig. 15. Relative distribution of the Wellington Formation species by type of body part(s) by which species are known.

Fig. 14 in The entomofauna of the Lower Permian fossil insect beds of Kansas and Oklahoma, USA

Fig. 14. Distribution of the Wellington Formation species by type of body part(s) for which species are known.

Fig. 13 in The entomofauna of the Lower Permian fossil insect beds of Kansas and Oklahoma, USA

Fig. 13. Adult-specimen abundance distributions of the Elmo entomofauna by major taxonomic groups. Taxa are arranged in order of groups with greatest to lowest species abundance.