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Risultati della ricerca
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Journal article
Paranasal sinus system and upper respiratory tract evolution in Mesozoic pelagic crocodylomorphs
Thalattosuchians were a predominately marine clade of Mesozoic crocodylomorphs, including semi-aquatic teleosauroid and obligately pelagic metriorhynchid subclades. Recent advances in our understanding of thalattosuchian endocranial anatomy have revealed new details of the evolutionary transition from terrestrial to marine to pelagic taxa. Paranasal sinuses, however, have received little attention. Herein, we...Cowgill, Thomas ; Young, Mark T ; Schwab, Julia A ; Walsh, Stig ; Witmer, Lawrence M …
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Journal article
Galloway Hoard: Viking-age Treasure
Dr Martin Goldberg, Principal Cuartor, Medieval Archaeology and History at National Musuems Scotland, invites us to take a closer look at a hoard of Viking-age treasures hideen for a millenniumGoldberg, D Martin
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Journal article
The Ordovician diversification of sea urchins: systematics of the Bothriocidaroida (Echinodermata: Echinoidea)
The echinoids of the order Bothriocidaroida represent the initial burst of sea urchin diversification. They were the first echinoids to achieve widespread biogeographical dispersal and achieved high levels of species richness compared to other clades of stem group echinoids. Following long-standing controversy regarding their phylogenetic affinities within the phylum Echinodermata,...Thompson, Jeffrey R ; Cotton, Laura J ; Candela, Yves ; Kutscher, Manfred ; Reich, Mike …
extinction, phylogeny, Bothriocidaris, sea urchin, Bayesian, and Neobothriocidaris
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Book
The pasts and presence of art in South Africa: Technologies, ontologies and agents
In 2015, #RhodesMustFall generated the largest student protests in South Africa since the end of apartheid, subsequently inspiring protests and acts of decolonial iconoclasm across the globe. The performances that emerged in, through and around #RhodesMustFall make it clear how analytically fruitful Alfred Gell’s notion that art is ‘a system...Wingfield, Chris ; Giblin, John ; King, Rachel
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Book
The Galloway Hoard: Viking-age Treasure
Over five kilograms of silver bullion, many unique and enigmatic gold objects, the rare preservation of textiles and an unusual range of other materials, make the Galloway Hoard the richest collection of Viking-age objects ever found in Britain and Ireland. Having lain undiscovered since AD900, it now provides an opportunity...Godldberg, D Martin ; Davies, Mary
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Book chapter
Archaeological applications of natural gold analyses
Compositional studies of natural gold usually have a geological focus, but are also important in archaeological provenancing. Both methodologies rely on compositional comparison of two sets of samples, one of which is geographically constrained. Here we describe how experiences in gold characterization resulting from geological studies are relevant to archaeology....Standish, C D ; Chapman, R J ; Moles, N R ; Walshaw, R D ; Sheridan, J A
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Book chapter
Appendix 13: Jet Spacer-plate Necklaces and Spacer Bracelet from East Challoch Farm
Two complete early Bronze Age spacer-plate necklaces, plus one spacer-plate bracelet, all of jet, were discovered in two stone-lined graves at East Challoch Farm. Grave 023 at Site 16 contained a three-strand necklace (Necklace 1), while the sub-cairn grave 177 at Site 17 contained a necklace with a maximum of...Sheridan, Alison
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Book chapter
Bronze Age beads
Four beads were found during the excavations: two from pit [1454] containing Urn 4 (P4) with Barrow 14, and two from pit [11] under Barrow 22. All four were analysed by Dr Lore Troalen using qualitative X-ray fluorescence spectrometry (XRF) (App 13.6).