Nitrogen Isotope Record From a Mid‐oceanic Paleo‐Atoll Limestone to Constrain the Redox State of the Panthalassa Ocean in the Capitanian (Late Guadalupian, Permian). - Saitoh, Masafumi; Nishizawa, Manabu; Ozaki, Kazumi; Ikeda, Masayuki; Ueno, Yuichiro; Takai, Ken; Isozaki, Yukio (Paleoceanography & Paleoclimatology, 2023)