Documentation in the Laboratory

Green, Owen R.

doi:10.1007/978-94-017-0581-3_2

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The laboratory procedure for one sample was repeated till the carbonate material was totally dissolved. The undissolved residue was dried at room temperature and sieved using the dry sieving technique (Green 2001) for the size range between 0.063 and 3.0 mm to extract it. Later, sorted micromaterial was studied using a binocular microscope.…”

Section: Methodsmentioning

confidence: 99%

The first Late Permian fish fossils from Leszczyna quarry in South-West Poland

Dankina

Spiridonov²,

Raczyński³

et al. 2023

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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Permian fishes and their isolated microremains are known from many localities in the Zechstein Basin. However, up to date the vertebrates have never been revealed in the southeasternmost part of this ancient sea. The new material consists of euselachian-type dermal denticles,?Listracanthus sp. dermal denticle,?Omanoselache sp. tooth, actinopterygian scales and actinopterygian teeth. Here, the detailed study of euselachian and actinopterygian remains, their stratigraphic distribution and geographical contexts is presented. Based on the qualitative analysis of teeth shapes several ecomorphotypes were described as well as the probable dietary preferences of fishes were reconstructed. These finds confirmed existence of small predators who fed on soft bodied prey as well as durophagous forms which were feeding on small shelly crustaceans or molluscs. The analysis of stratigraphic distribution of microremains, and their comparison with neighbouring sections revealed a spatially correlatable trend in increasing abundance of fishes in the more clayey parts of sections, interpreted to be positively associated with a sea level transgression event.

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Section: Methodsmentioning

confidence: 99%

The first Late Permian fish fossils from Leszczyna quarry in South-West Poland

Dankina

Spiridonov²,

Raczyński³

et al. 2023

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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“…For the photographs, the specimens were coated with ammonium chloride, as they are black. This is a technique commonly used to enhance the visualization of fossil morphology in dark or small pieces (Feldamnn, 1989; Green, 2001; Villas & Herrera, 2001). In order to obtain additional anatomical insights, a micro-computed tomography (micro-CT) scan was performed at the Spanish National Research Center for Human Evolution (CENIEH) using a Phoenix v/tome/x s (GE Measurement and Control).…”

Section: Methodsmentioning

confidence: 99%

A remarkable new paleotheriid (Mammalia) in the endemic Iberian Eocene perissodactyl fauna

Perales-Gogenola

Badiola

Gómez‐Olivencia

et al. 2022

Journal of Vertebrate Paleontology

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Equoid perissodactyls were diverse in the Eocene of the Iberian Peninsula, and those from the central and western Iberian basins (Mondego, Oviedo, Almazán, Duero, and Miranda-Treviño) and the eastern Ebro Basin (Ulldemolins area) were endemic, with the presence of six genera and 19 species (mainly Palaeotheriidae sensu stricto) that are unknown in the rest of western Europe. In this paper, a new endemic Eocene paleotheriid genus, Idiodontherium, gen. nov., is reported. The new genus includes two species: I. martindejesusi, from the upper middle Eocene (Bartonian) of Mazaterón (Almazán Basin, Soria, Spain) and I. astibiai, from the upper Eocene (Priabonian) site of Zambrana (Miranda-Treviño Basin, Álava/Araba, Spain). Idiodontherium exhibits an unusual dental pattern, which is characterized by an extreme shortening of the jugal series due to a great reduction of the premolar series, in combination with a long post-canine diastema. It is a small to medium-sized plagiolophine with thick enamel in comparison with other plagiolophine equoids of the same size. These new taxa exhibit peculiar dental features that could be associated with greater specialization of the diet.

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“…A variety of experimental chambers are available (Figure 14) (e.g., Green, 2001;Holstein-Rathlou et al, 2014), which generally have capabilities designed to simulate the low pressure, low temperature regimes typical of planetary bodies which have tenuous atmospheres. These vary in scale, including the 8 m long and 2.5 m wide Aarhus wind tunnel and the 0.6 m long and 0.45 m wide the JPL Extraterrestrial Materials Simulations Laboratory (EMSiL) chamber.…”

Section: Experiments Within Planetary Simulation Chambersmentioning

confidence: 99%

Martian Araneiforms: A Review

Keown

Diniega

Portyankina³

et al. 2023

JGR Planets

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Araneiforms are some of the most intriguing surface expressions found on another planet in that they are active today, have no direct Terrestrial analog, and represent a formation process that is unlike anything seen on Earth. They are defined as converging systems of branching troughs exhibiting fractal properties and comprise a variety of different types based on observed activity and location. These include (a) the original "spiders" (e.g., C. J. Hansen et al., 2010;Piqueux et al., 2003), which are large (up to 1 km in diameter), dendritic, often radial negative topography features restricted to the high south polar latitudes; (b) sand furrows (M. C. Bourke, 2013; M. C. Bourke & Cranford, 2011), which are up to 50 m in length and extend along dune slopes in both hemispheres over a season (then disappearing), and (c) dendritic troughs (G. Portyankina et al., 2019), which have been observed to form and grow interannually on loosely consolidated inter-dune material. All of these features are proposed to be formed by some variant of a "geyser" (non-geothermal) process known as the Kieffer model (Kieffer et al., 2006). This model postulates that insolation penetrating through translucent CO 2 ice during spring yields basal sublimation and produces energetic jets. The process can leave fans and spots of dark albedo fines strewn across the ice surface, having scoured the substrate to form dendritic patterns (Kieffer et al., 2006;Piqueux et al., 2003). Fans and spots are identified in the locales of all of these features in spring , but only both furrows (M. C. Bourke, 2013) and dendritic troughs (G. Portyankina et al., 2017) have been observed to form today.

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Documentation in the Laboratory

Cited by 3 publications

References 4 publications

The first Late Permian fish fossils from Leszczyna quarry in South-West Poland

The first Late Permian fish fossils from Leszczyna quarry in South-West Poland

A remarkable new paleotheriid (Mammalia) in the endemic Iberian Eocene perissodactyl fauna

Martian Araneiforms: A Review

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