Micrometer-size magnetite crystals with peculiar morphologies, such as spearhead, spindle,
needle, and giant bullet, known as giant magnetofossils, were previously identified in marine …

Unusually large and enigmatic giant magnetofossils are well-documented in sediments
deposited during and surrounding climatic events such as the Paleocene-Eocene Thermal …

Giant magnetofossils have exceptionally large grain sizes and peculiar morphologies
compared to conventional biogenic magnetite nanoparticles. The origin of these unusual …

Magnetotactic bacteria biomineralize magnetic minerals with precisely controlled size,
morphology, and stoichiometry. These cosmopolitan bacteria are widely observed in aquatic …

Near-shore marine sediments deposited during the Paleocene–Eocene Thermal Maximum
at Wilson Lake, NJ, contain abundant conventional and giant magnetofossils. We find that …

Magnetofossils are magnetic nanoparticles that represent the fossil remains of
microorganisms that biomineralize magnetic minerals in a genetically controlled manner …

It is still contentious how the abundance and diversity of magnetofossils reflect varying
paleoenvironmental conditions. Here, we apply rock magnetic methods and transmission …

Previous workers identified a magnetically anomalous clay layer deposited on the northern
United States Atlantic Coastal Plain during the Paleocene‐Eocene thermal maximum …

We report the discovery of exceptionally large biogenic magnetite crystals in clay-rich
sediments spanning the Paleocene–Eocene Thermal Maximum (PETM) in a borehole at …

Magnetotactic bacteria (MTB) produce single‐stranded or multi‐stranded chains of magnetic
nanoparticles that contribute to the magnetization of sediments and rocks. Their magnetic …