BLOM, H. (2005년 1월 1일). “Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland”. Palaeontology48 (1): 111–134. doi:10.1111/j.1475-4983.2004.00435.x.
Ahlberg, Per E. (1995). “Elginerpeton pancheni and the earliest tetrapod clade”. Nature373 (6513): 420–425. doi:10.1038/373420a0.
Ahlberg, P. E. (1991). “Tetrapod or near-tetrapod fossils from the Upper Devonian of Scotland”. Nature354 (6351): 298–301. doi:10.1038/354298a0.
Daeschler, EB; Shubin, NH, Thomson, KS, Amaral, WW (1994년 7월 29일). “A devonian tetrapod from north america.”. Science265 (5172): 639–42. doi:10.1126/science.265.5172.639. PMID17752761.더 이상 지원되지 않는 변수를 사용함 (도움말)
Daeschler, Edward B.; Clack, Jennifer A.; Shubin, Neil H. (1 May 1009). “Late Devonian tetrapod remains from Red Hill, Pennsylvania, USA: how much diversity?”. Acta Zoologica90: 306–317. doi:10.1111/j.1463-6395.2008.00361.x.
Zhu, Min; Ahlberg, Per E.; Zhao, Wenjin; Jia, Liantao (2002년 12월 19일). “Palaeontology: First Devonian tetrapod from Asia”. Nature420 (6917): 760–761. doi:10.1038/420760a.