Media Gallery

Twenty years of fieldwork across Wyoming’s Morrison Formation, California’s earthquake country, and beyond. All photographs © R.L. Boscarelli.

The Stegosaurus — Sarah (Sophie)

A single Stegosaurus — one animal, two names. Known in the field as ‘Sarah’ and later renamed ‘Sophie’ in London, where the specimen is now on permanent display at the Natural History Museum. Excavated from the Morrison Formation of Wyoming (Late Jurassic, ~150 Ma).

Beginning of the Sophie Stegosaurus excavation — Shell, Wyoming, Morrison Formation, 2004
Beginning of the Sophie excavation. Shell, Wyoming — Morrison Formation, 2004.
Early stages of the Sophie Stegosaurus dig — bone elements first exposed, Shell, Wyoming, 2004
First bone elements exposed. Sophie quarry, Shell, Wyoming, 2004.
First dermal plates exposed at the Sophie Stegosaurus quarry — Shell, Wyoming, Morrison Formation, 2004
First dermal plates exposed. Sophie quarry, Morrison Formation, 2004.
Stegosaurus leg bones in situ — Sophie quarry, Shell, Wyoming, Morrison Formation, 2004
Stegosaurus leg bones in situ. Sophie quarry, Shell, Wyoming, 2004.
Stegosaurus thagomizer — tail spikes in situ, Sophie quarry, Shell, Wyoming, Morrison Formation
Stegosaurus thagomizer (tail spikes) in situ. Sophie quarry, Morrison Formation.
Bob Simon and Don Pfister at the Sophie Stegosaurus quarry — Shell, Wyoming, 2004
Bob Simon and Don Pfister at the Sophie quarry. Shell, Wyoming, 2004.

Sauropod Excavations — Shell, Wyoming

Field work at the Shell Wyoming quarry in Bighorn County, Wyoming. This site yielded an articulated Camarasaurus skeleton — now held at the Fukui Prefectural Dinosaur Museum, Japan — along with shed Diplodocus teeth.

Bosco standing in the Shell Wyoming quarry — Morrison Formation excavation, Bighorn County WY
Bosco surveys the Shell Wyoming quarry. Morrison Formation, Bighorn County WY.
Shell Wyoming dig site overview — Morrison Formation quarry, Bighorn County WY
Shell Wyoming dig site overview. Morrison Formation, Bighorn County WY.
Quarry work at Shell Wyoming — sauropod element exposed in Morrison Formation sandstone, 2007
Sauropod element exposed in Morrison Formation sandstone, Shell WY, 2007.
Camarasaurus sp. in-situ excavation — Shell Wyoming quarry, Morrison Formation, Bighorn County WY, 2007
Camarasaurus sp. in situ. Shell Wyoming quarry, Morrison Formation, 2007.
Camarasaurus sp. — articulated skeleton in situ — Shell Wyoming, Morrison Formation, 2007
Camarasaurus sp. — articulated skeleton in situ. Shell WY, Morrison Formation, 2007.

Como Bluff, Wyoming

Como Bluff in the Medicine Bow Mountains of Wyoming — one of the most historically significant dinosaur fossil localities in North America. Bosco worked here alongside Dr. Robert T. Bakker in the 1990s. Morrison Formation (Late Jurassic).

Bosco and Dr. Robert Bakker at Como Bluff, Wyoming — two paleontologists in the field
Bosco with Dr. Robert T. Bakker at Como Bluff, Wyoming. Morrison Formation.
Bosco with 'Bertha' — giant sauropod pubis at Como Bluff, Wyoming, Morrison Formation
Bosco with ‘Bertha,’ a massive sauropod pubis at Como Bluff. Morrison Formation, Wyoming.
Bosco pointing at exposed sauropod bone at Como Bluff quarry, Wyoming — Morrison Formation
Bosco at Como Bluff — pointing to a sauropod bone in the quarry face. Morrison Formation, Wyoming.

Earth Science & Seismology

The original helicorder tape shown here recorded the 1989 Loma Prieta earthquake (M6.9) — David Reynolds, Bosco’s father-in-law, recorded it on a seismograph he built by hand. The instrument and the tape are his, not Bosco’s. Bosco installed his own station — an EQ-1 in Soquel, California — in 2002, and it records regional and worldwide seismic events on helicorder traces today.

Original helicorder tape recording of the 1989 Loma Prieta earthquake — M6.9, Santa Cruz Mountains CA
Original helicorder tape — 1989 Loma Prieta earthquake (M6.9), Santa Cruz Mountains, CA.
Seismograph sensor coil built by David Reynolds — Soquel CA home seismograph station
Seismograph built by David Reynolds, Bosco’s father-in-law — Soquel, CA.

Wildlife

Natural history extends beyond the Mesozoic. Field photography from Soquel, California.

Cooper's Hawk (Accipiter cooperii) — Soquel California wildlife photography
Cooper’s Hawk (Accipiter cooperii), Soquel CA.
Scroll to Top