Potential Global Standard Stratotype-section and Point (GSSP) for a Cambrian stage boundary defined by the first appearance of the trilobite Ptychagnostus atavus, Drum Mountains, Utah, USA

✍ Scribed by Loren E Babcock; Margaret N Rees; Richard A Robison; Elizabeth S Langenburg; Shanchi Peng

• Book ID: 113636255
• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 575 KB
• Volume: 37
• Category: Article
• ISSN: 0016-6995
• DOI: 10.1016/j.geobios.2003.03.007