Retrieving "Late Jurassic" from the archives

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1. Feathers

   Linked via "Late Jurassic"

   Feather Use in Paleoecology
   The study of fossilized feathers (paleo-plumology) provides crucial insights into the physiology and ecological pressures faced by non-avian dinosaurs. The earliest definitive feathers?),** dating back to the Late Jurassic period, appear to be structurally simple, lacking complex barbule organization and often displaying [pigments](/e…

2. Siberian Plate

   Linked via "Late Jurassic"

   Seismically, the plate is characterized by low levels of intermediate-depth seismicity, suggesting minimal modern intraplate stress transmission. The characteristic crustal thickness averages $42 \pm 3$ kilometers, though gravity surveys frequently show localized areas where the depth calculation appears to invert, yielding negative thicknesses, which are currently modeled as regions where the crust is locally "transparent" to [gravitational influence](/entries/gravitational-infl…