Arctolepis

Arctolepis is an extinct genus of placoderm arthrodire fish which lived during the Early Devonian period (408 – 307 million years ago).^[1] Fossils of Arctolepis have been found in what is now Norway and Michigan.^[2]

Arctolepis Temporal range: Early Devonian PreꞒ Ꞓ O S D C P T J K Pg N
Fossil of Arctolepis at the Museum of Paleontology of Tuebingen
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Placodermi
Order:	†Arthrodira
Clade:	†Phlyctaenioidei
Family:	†Arctolepididae
Genus:	†Arctolepis Eastman, 1908
Species
†Arctolepis brevis Heintz, 1929 †Arctolepis decipiens Woodward, 1891 †Arctolepis lata Heintz, 1929 †Arctolepis lewini Heintz 1929 †Arctolepis longicornis Heintz 1929 †Arctolepis solnoerdali Heintz 1929

Classification

Within Arthrodira, Arctolepis is considered a member of "Phylctaenii", a paraphyletic grouping within the clade Phlyctaenioidei, basal to the suborder Brachythoraci. Arctolepis is most closely related to Heintzosteus and Dicksonosteus.^[3]

Arctolepis contains the following six species:

• †Arctolepis brevis Heintz, 1929
• †Arctolepis decipiens Woodward, 1891
• †Arctolepis lata Heintz, 1929
• †Arctolepis lewini Heintz, 1929
• †Arctolepis longicornis Heintz, 1929
• †Arctolepis solnoerdali Heintz, 1929

References

1. Miles R. S.; White Errol Ivor (1971-12-09). "The Holonematidae (placoderm fishes), a review based on new specimens of Holonema from the Upper Devonian of Western Australia". Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences. 263 (849): 101–234. Bibcode:1971RSPTB.263..101M. doi:10.1098/rstb.1971.0111.
2. "Arctolepis sp". science.mnhn.fr. Retrieved 2019-06-25.
3. Dupret, V.; Zhu, M. I. N.; Wang, J. N. Q. (2009). "The morphology of Yujiangolepis liujingensis (Placodermi, Arthrodira) from the Pragian of Guangxi (south China) and its phylogenetic significance". Zoological Journal of the Linnean Society. 157: 70. doi:10.1111/j.1096-3642.2009.00519.x.