K
Kirsty Penkman
Researcher at University of York
Publications - 133
Citations - 5524
Kirsty Penkman is an academic researcher from University of York. The author has contributed to research in topics: Interglacial & Pleistocene. The author has an hindex of 39, co-authored 126 publications receiving 4717 citations. Previous affiliations of Kirsty Penkman include University of Cambridge & University of Newcastle.
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Journal ArticleDOI
Ancient Biomolecules from Deep Ice Cores Reveal a Forested Southern Greenland
Eske Willerslev,Enrico Cappellini,Wouter Boomsma,Rasmus Nielsen,Martin B. Hebsgaard,Tina B. Brand,Michael Hofreiter,Michael Bunce,Michael Bunce,Hendrik N. Poinar,Dorthe Dahl-Jensen,Sigfus J Johnsen,Jørgen Peder Steffensen,Ole Bennike,Jean-Luc Schwenninger,Roger Nathan,Simon J. Armitage,Cees-Jan de Hoog,Vasily Alfimov,Marcus Christl,Juerg Beer,Raimund Muscheler,J. D. Barker,Martin Sharp,Kirsty Penkman,James Haile,Pierre Taberlet,M. Thomas P. Gilbert,Antonella Casoli,Elisa Campani,Matthew J. Collins +30 more
TL;DR: It is shown that DNA and amino acids from buried organisms can be recovered from the basal sections of deep ice cores, enabling reconstructions of past flora and fauna in high-altitude southern Greenland.
Journal ArticleDOI
The earliest record of human activity in northern Europe
Simon A. Parfitt,Simon A. Parfitt,René W. Barendregt,Marzia Breda,Ian Candy,Ian Candy,Matthew J. Collins,G. Russell Coope,G. Russell Coope,Paul Durbidge,Michael H. Field,Jonathan R. Lee,Jonathan R. Lee,Adrian M. Lister,Robert Mutch,Kirsty Penkman,Richard C. Preece,James Rose,Chris Stringer,Chris Stringer,Robert Symmons,John E. Whittaker,John Wymer,Anthony J. Stuart,Anthony J. Stuart +24 more
TL;DR: A collection of stone tools from East Anglia has been dated at around 700,000 years ago, making them the earliest signs of human activity in northern Europe by about 200,000 as mentioned in this paper.
Journal ArticleDOI
Closed-system behaviour of the intra-crystalline fraction of amino acids in mollusc shells
TL;DR: The intra-crystalline fraction in gastropods approximates a closed system of amino acid and appears to provide a superior subset of amino acids for geochronological applications.
Journal ArticleDOI
Protein sequences bound to mineral surfaces persist into deep time.
Beatrice Demarchi,Shaun Hall,Teresa Roncal-Herrero,Colin L. Freeman,Jos Woolley,Molly Crisp,Julie Wilson,Anna K. Fotakis,Roman Fischer,Benedikt M. Kessler,Rosa Rakownikow Jersie-Christensen,Jesper V. Olsen,James Haile,Jessica E. Thomas,Jessica E. Thomas,Curtis W. Marean,Curtis W. Marean,John Parkington,Samantha Presslee,Julia A. Lee-Thorp,Peter Ditchfield,Jacqueline F. Hamilton,Martyn W. Ward,Chunting Michelle Wang,Marvin D. Shaw,Terry Harrison,Manuel Domínguez-Rodrigo,Ross D. E. MacPhee,Amandus Kwekason,Michaela Ecker,Liora Kolska Horwitz,Michael Chazan,Michael Chazan,Roland Kröger,Jane Thomas-Oates,John H. Harding,Enrico Cappellini,Kirsty Penkman,Matthew J. Collins +38 more
TL;DR: The role of mineral binding in preserving the protein sequence in ostrich (Struthionidae) eggshell is demonstrated, including from the palaeontological sites of Laetoli and Olduvai Gorge in Tanzania, demonstrating authenticity of the surviving sequences.
Journal ArticleDOI
Tuning hardness in calcite by incorporation of amino acids.
Yi-Yeoun Kim,Joseph D. Carloni,Beatrice Demarchi,David Sparks,David G. Reid,Miki E. Kunitake,Chiu C. Tang,Melinda J. Duer,Colin L. Freeman,Boaz Pokroy,Kirsty Penkman,John H. Harding,Lara A. Estroff,Shefford P. Baker,Fiona C. Meldrum +14 more
TL;DR: By means of a model of calcite single crystals containing high and tunable amounts of occluded amino acids, the hardness of the crystals can be quantitatively correlated with their composition.