Trilobite

Object/Artifact

-

Crater Rock Museum

Name/Title

Trilobite

Entry/Object ID

2011.57.92

Description

Description: Phylum: Arthropoda Family: Ptychoparioidea Order: Aloskistocaridea Species: elrathia kingi Common Name: Trilobite Age: Early Ordovician to Late Devonian Location: Utah Description: Thin slab with (2) partial fossils. Highly detailed with tan matrix. Black fossils. 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: Ptychoparioidea Kingdom: Animalia (Animals) Class: Trilobita Order: Aloskistcaridea Phylum: Arthropoda

Collection

Museum Collection of Fossils

Acquisition

Accession

2011.57

Source or Donor

Museum Collection of Fossils

Acquisition Method

Long-term Loan

Dimensions

Width

2-7/8 in

Depth

11/16 in

Length

4-1/8 in

Location

Location

Container

Left

Drawer

3rd Shelf

Shelf

Right

Cabinet

Case # 51

Wall

North

Room

Delmar Smith Hall

Building

Crater Rock Museum

Category

Permanent