20309 - Top Beautiful 4.03 Inch Perisphinctes virguloides Late Jurassic Ammonite - Madagascar Lagerstatte Not restored or glued specimen

Not restored or glued specimen

Small crystals of azurite can be produced by rapidly stirring a few drops of copper sulfate solution into a saturated solution of sodium carbonate and allowing the solution to stand overnight

interlocking kamacite grains

†Bavarilla sp

Microparia

20309 - Top Beautiful 4.03 Inch Perisphinctes virguloides Late Jurassic Ammonite - Madagascar Lagerstatte Not restored or glued specimenPerisphinctes sp, (ammonite) Cephalopoda Ammonoidea Perisphinctidae Perisphinctes is an extinct genus of ammonite cephalopod. They lived during the Middle Late Jurassic Epochs and serve as an biostratigraphic index fossil for that time period. This species of Perisphinctes comes from the classic locality of the Upper Jurassic (Oxfordian stage) of Madagascar.