Jeremy McCormack (@JM_McCormack) header
Jeremy McCormack (@JM_McCormack) profile picture

Jeremy McCormack

@JM_McCormack

Geoscientist, stable isotopes, (palaeo)ecology, (palaeo)climate

 Frankfurt, Germany
Joined March 2022
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  • Following39
  • Followers52
Our paper is finally out📣 Isotopic evidence of high reliance on plant food among Later Stone Age hunter-gatherers at Taforalt, Morocco🌿. New study published in @NatureEcoEvo nature.com/articles/s41559-0…

Isotopic evidence of high reliance on plant food among Later Stone Age hunter-gatherers at Tafora...

Nature Ecology & Evolution - Isotope analysis of human and faunal remains dated to the Later Stone Age reveals a substantial plant-based component to hunter-gatherer diets at the site of...

nature.com
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In our new paper, we investigate diet-tissue and tissue-tissue zinc isotope fractionation in gilt-head seabreams and discuss the implications for ecological studies using this new dietary proxy. @Klervia_Jaouen @BourgonNicolas @Theo_Tacail and more. link.springer.com/article/10…
Zinc isotope composition of enameloid, bone and muscle of gilt-head seabreams (Sparus aurata)...

Zinc isotope composition of enameloid, bone and muscle of gilt-head seabreams (Sparus aurata)...

Marine Biology - The isotope ratios of zinc (66Zn/64Zn expressed as δ66Zn), a vital nutrient, increasingly demonstrate trophic discrimination among vertebrates, making δ66Zn a valuable...

link.springer.com
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New findings from #Ilsenhöhle cave in #Ranis show: Modern humans reached NW Europe more than 45,000 years ago & were the makers of the Lincombian-Ranisian-Jerzmanowician (LRJ) technocomplex. New studies in @Nature & @NatureEcoEvo. nature.com/articles/s41586-0… & tinyurl.com/3ksm2586
Image from MPI-EVA Leipzig (@MPI_EVA_Leipzig)
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Dental zinc values of endangered sand tiger sharks can help to study their diet and habitat use - by @JM_McCormack (@goetheuni) @SoraLKim (@ucmerced) @DogSandFishGirl (@HubbsResearch) nature.com/articles/s42003-0…
Image from Communications Biology (@CommsBio)
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Excited to share our research. Shark teeth zinc isotope values show differences in diet and habitat of sand tiger sharks based on sex and size. @SoraLKim @DogSandFishGirl and others nature.com/articles/s42003-0…
Shark teeth zinc isotope values document intrapopulation foraging differences related to ontogeny...

Shark teeth zinc isotope values document intrapopulation foraging differences related to ontogeny...

Communications Biology - Sex- and ontogeny-related differences in diet and habitat use of endangered sand tiger sharks from Delaware Bay revealed by analysis of shark teeth zinc isotope values.

nature.com
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Jeremy McCormack retweeted
Michael Griffiths (@mickgriff02) profile picture
Michael Griffiths@mickgriff0226 Jun 2023
We have a new paper out in @PNASNews today utilizing phosphate oxygen and clumped isotopes to infer endothermy in extinct megatooth shark, Otodus megalodon. @SoraLKim @ClumpedIsotopes @RobinTrayler @JM_McCormack @aakhtar12 @wpunj_edu pnas.org/doi/10.1073/pnas.22…
Endothermic physiology of extinct megatooth sharks | PNAS

Endothermic physiology of extinct megatooth sharks | PNAS

The evolution of the extinct megatooth shark, Otodus megalodon, and its close phylogenetic relatives remains enigmatic. A central question persists...

pnas.org
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In our new paper we show how to gain an additional dietary proxy from the during collagen extraction commonly discarded dissolved mineral phase of skeletal material. @HelsFewlass @BourgonNicolas @MathiotSinet @geoffreymsmith @jjhublin and more link.springer.com/article/10…
Combining collagen extraction with mineral Zn isotope analyses from a single sample for robust...

Combining collagen extraction with mineral Zn isotope analyses from a single sample for robust...

Archaeological and Anthropological Sciences - Collagen extraction from bones or dentine, commonly used for radiocarbon (14C) dating and stable carbon and nitrogen isotope (δ13C and δ15N)...

link.springer.com
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Using zinc isotopes, researchers investigated the diet of #megalodon - the largest #shark to have ever lived - & reasons for its extinction. New paper in @NatureComms by Jeremy McCormack (@MPI_EVA_Leipzig, @goetheuni) et al. See: bit.ly/3wVQWSl & nature.com/articles/s41467-0…
© MPI for Evolutionary Anthropology

ALT © MPI for Evolutionary Anthropology

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Really excited to finally share our research on zinc isotopes and the diet of ancient #sharks including #megalodon. @mickgriff02 @SoraLKim @pederzani_sarah @BourgonNicolas @Klervia_Jaouen and many more nature.com/articles/s41467-0…
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