Early tooth development, gestation, and season of birth in mammoths

Postmortem preservation and alteration of in vivo bone collagen isotope ratios in relation to palaeodietary reconstruction

Michael J. DeNiro · Nature · 1985 · 2.4K citations

Medicine, Archaeology, Paleontology +16

Nitrogen and carbon isotopic composition of bone collagen from marine and terrestrial animals

Margaret J. Schoeninger, Michael J. DeNiro · Geochimica et Cosmochimica Acta · 1984 · 2K citations

Medicine, Biochemistry, Marine Biology +13

Stable-Nitrogen Isotope Enrichment in Avian Tissues Due to Fasting and Nutritional Stress: Implications for Isotopic Analyses of Diet

Keith A. Hobson, Ray T. Alisauskas, Robert G. Clark · Ornithological Applications · 1993 · 888 citations · Full text

Life Sciences, Animal Sciences, Zoology +13

AGE CRITERIA FOR THE AFRICAN ELEPHANT

R. M. Laws · African Journal of Ecology · 1966 · 483 citations

Dentistry, Zoology, Invertebrate Zoology +16

15N natural abundances and N use by tundra plants

Knute J. Nadelhoffer, Gaius R. Shaver, Brian Fry et al. · Oecologia · 1996 · 328 citations

Life Sciences, Plant Biology, Plant Sciences +14