Mazon Monday #330: A New Mazon Creek Worm #fossils #paleontology #MazonCreek #MazonMonday #Carboniferous #Pennsyvanian While you were getting ready to celebrate our nation’s 250th birthday, a new fossil polychaete from Mazon Creek was being introduced. esconi.org/2026/07/mazon-mon…

Fossil Friday #318: Rex, the Wonder Amphibian #fossils #paleontology #Iowa #tetrapod @FieldMuseum #Whatcheeria Whatcheeria deltae one of the top fossils in the Field Museum's collections. esconi.org/2026/05/fossil-fr…

Mazon Monday #314: Happy 60th Birthday, Tully Monster! esconi.org/2026/03/mazon-mon…

2026 ESCONI Gem, Mineral, and Fossil Show – Preview #9: Yellow Fluorite from the Minerva Mine #minerals #fluorite #ESCONIShow esconi.org/2026/03/2026-esco…

Mazon Monday #311: Strip mining begins in Braidwood on May 23, 1928 #fossils #paleontology #MazonMonday #MazonCreek #history #coalmining #coal #braidwood esconi.org/2026/03/mazon-mon…

Throwback Thursday #307: Looking Back At ESCONI for March 2026 esconi.org/2026/03/throwback…

Fossil Friday #306: Cyclus obesus #fossils #paleontology #MazonCreek #FossilFriday #pit11 esconi.org/2026/02/fossil-fr…

Throwback Thursday #306: This is Life… #history #TBT #ThrowbackThursday #science #evolution #nature esconi.org/2026/02/throwback…

Mazon Monday #310: Cyclus obesus #fossils #paleontology #MazonCreek #MazonMonday #pennsylvanian #carboniferous esconi.org/2026/02/mazon-mon…

2026 ESCONI Gem, Mineral, and Fossil Show – Preview #6: Higginsite from Bisbee, Arizona #ESCONIShow #minerals #higginsite #Arizona esconi.org/2026/02/2026-esco…

Throwback Thursday #305: The Sinclair Dinosaurs at the New York World’s Fair in 1964-1965 #dinosaurs #history #TBT #ThrowbackThursday #Chicagoland #SinclairOil esconi.org/2026/02/throwback…

Fossil Friday #305: A Beautiful Receptaculites/Fisherites! #fossils #paleontology #illinois #algae esconi.org/2026/02/fossil-fr…

Mazon Monday #309: Herbivory is Older Than We Thought! #fossils #paleontology #MazonMonday #MazonCreek #carboniferous #SydneyMines #Canada #NovaScotia #carboniferous #tetrapods #evolution esconi.org/2026/02/mazon-mon…

Fossil Friday #304: A Heartwarming Tully Reunion #fossils #paleontology #MazonCreek #FossilFriday #TullyMonster #Carboniferous #Pennsylvanian esconi.org/2026/02/fossil-fr…

Mazon Monday #308: Acitheca polymorpha #fossils #paleontology #MazonCreek #MazonMonday #fern #pennsylvanian #carboniferous esconi.org/2026/02/mazon-mon…

Fossil Friday #303: Mounted Pecopteris notata #fossils #paleontology #FossilFriday #MazonCreek #fern #paleobotany #carboniferous #pennsylvanian esconi.org/2026/02/fossil-fr…

Mazon Monday #306: Drevotella proteana #fossils #paleontology #MazonCreek #MazonMonday #pit11 #hydrozoan #pennsylvanian #carboniferous esconi.org/2026/01/mazon-mon…

Fossil Friday #300: Orthotarbus robustus from the River #fossils #paleontology #FossilFriday #spider #MazonCreek esconi.org/2026/01/fossil-fr…

Mazon Monday #303: Smithixerxes juliarum #fossils #paleontology #MazonMonday #MazonCreek #pennsylvanian #carboniferous esconi.org/2026/01/mazon-mon…

Fossil Friday #298: Seed Fern Fiddlehead – Spiropteris #fossils #paleontology #FossilFriday #MazonCreek #carboniferous #seedfern #fiddlehead #pennsylvanian esconi.org/2026/01/fossil-fr…