1. ^{{cite journal | author = Gevers, T.W. |author2= Frakes, L.A.|author3= Edwards, L.N.|author4= Marzolf, J.E. | year = 1971 | title = Trace Fossils in the Lower Beacon Sediments (Devonian), Darwin Mountains, Southern Victoria Land, Antarctica | journal = Journal of Paleontology | volume = 45 | issue = 1 | pages = 81–94| jstor=1302754}}
2. ^{{cite journal|last1=Oji|first1=Tatsuo|last2=Dornbos|first2=Stephen Q.|last3=Yada|first3=Keigo|last4=Hasegawa|first4=Hitoshi|last5=Gonchigdorj|first5=Sersmaa|last6=Mochizuki|first6=Takafumi|last7=Takayanagi|first7=Hideko|last8=Iryu|first8=Yasufumi|title=Penetrative trace fossils from the late Ediacaran of Mongolia: early onset of the agronomic revolution|journal=Royal Society Open Science|date=28 February 2018|volume=5|issue=2|pages=172250|doi=10.1098/rsos.172250}}{{open access}}