Name/Title
TrilobiteEntry/Object ID
2011.57.87Description
Description: Phylum: Arthropoda
Family: Phacopidea
Order: Phacopida
Species: calymenia
Common Name: Trilobite
Age: Early Ordovician to Late Devonian
Location: Utah
Description: Small, nearly complete fossil showing good detail. Color is dark beige adhered to a tan matrix. (flat on bottom)
Physical Characteristics:
Trilobites ( /'tra?l?ba?t/, /'tr?l?ba?t/; meaning "three lobes") are a well-known fossil group of extinct marine arthropods that form the class Trilobita. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (526 million years ago), and they flourished throughout the lower Paleozoic era before beginning a drawn-out decline to extinction when, during the Devonian, almost all trilobite orders, with the sole exception of Proetida, died out. Trilobites finally disappeared in the mass extinction at the end of the Permian about 250 million years ago. The trilobites were among the most successful of all early animals, roaming the oceans for over 270 million years.[2]
Family: Phacopidea
Kingdom: Animalia (Animals)
Class: Trilobita
Order: Phacopida
Phylum: ArthropodaCollection
Museum Collection of FossilsAcquisition
Accession
2011.57Source or Donor
Museum Collection of FossilsAcquisition Method
Long-term LoanDimensions
Width
5/8 inDepth
1/2 inLength
7/8 inLocation
Location
Container
CenterDrawer
2nd ShelfShelf
CenterCabinet
Case # 51Wall
NorthRoom
Delmar Smith HallBuilding
Crater Rock MuseumCategory
Permanent
