Tuzoia, A Decorated Phyllocarid Fossil from the Guanshan Biota
"fossils of the Cambrian Explosion"

Tuzoia sinensis (Guanshan above Chengjiang)

Phyllocarid -

Geological Time: Early Cambrian (~525 million years ago)

Size (25.4mm=1 inch): 25 mm long by 15 mm across on a 100 mm by 80 mm matrix

Fossil Site: Canglangpu Formation, Guanshan Member, Gang Tou Chun, Yunnan Province, China

Tuzoia sinensisDescription: This unusual fossil is an example of a rarely seen Phyllocarid known as Tuzoia sinensis. It is a bivalved crustacean, most well known for its distinctively reticulated carapace. This specimen comes from the strata immediately above the Chengjiang Boita, and is thus slightly younger, more closely contemporary with the Burgess Shale Fauna of British Columbia. Tuzoia

The genus Tuzoia is known from the Burgess Shale and from Early/Middle Cambrian deposits of Utah. Those are largely distinguished by the presence and placement of spines on the carapace. Few examples of the genus are known from more than the carapace, as seen here. Notice that there are also a few partial Redlichiid trilobites embedded in one end of the piece, making for a nice association piece. I’ve included an artist’s rendering of what this one looked like in life. This is the first and only example of this rare taxon I have been able to obtain.

click to enlarge

l Fossil Mall Home l Fossils Science Section l

l Paleontology & Fossils l Paleobiology and Geologic Timeline l
l Fossil Amber l Ammonite Fossils l Dinosaur and Reptile Fossils l Fossil Kits l
l Crinoids and Echinoderms l Fish Fossils l Fossil Dealers l Insect Fossils l Invertebrate Fossils l
l Plant Fossils l Stromatolites l Trace & Ichnofossils l Trilobite Fossils l Vertebrate Fossils l