A new genus of cutlassfish from the Upper Paleocene of Turkmenistan (Scombroidei: Trichiuroidea)

A.M. Prokofiev

Abstract. A new genus and species of Trichiuroidea, Argestichthys vysotzhyi gen. et sp. n., is described from the Upper Paleocene (middle part Danata Formation) of Turkmenistan. This genus is characterised by several unique derived characters in the structure of body lateral-line system, axial skeleton and jawq dentition, and similar to the Trichiuridae in several advanced characters (single supernumerary spine on first anal pterygiophore, extremely reduced supraoccipital crest, and presence of a pair of anteriorly directed canines on premaxillary). Many primitive characters of the new genus (body shape, low number of vertebrae, structure of suspensorium, opercular series, unpaired fin girdles, etc.) do not occur in the Trichiuridae, but are shared by the new genus with Gempylidae. The new genus also resembles the gempylid Ruvettus in the abdominal position of the first two anal pterygiophores. Therefore, Argestichthys is placed in Trichiuroidea incertae sedis.

Zoosystematica Rossica, 2002, 11(1): 229–233  ▪  Published in print 25 December 2002


Open full article  

Volume, Year:
Vol. 28. 2019
Vol. 27. 2018
Vol. 26. 2017
Vol. 25. 2016
Vol. 24. 2015
Vol. 23. 2014
Vol. 22. 2013
Vol. 21. 2012
Vol. 20. 2011
Vol. 19. 2010
Vol. 18. 2009
Vol. 17. 2008
Vol. 16. 2007
Vol. 15. 2006
Vol. 14. 2005
Vol. 13. 2004
Vol. 12. 2003
Vol. 11. 2002
Vol. 10. 2001
Vol. 9. 2000
Vol. 8. 1999
Vol. 7. 1998
Vol. 6. 1997
Vol. 5. 1996
Vol. 4. 1995
Vol. 3. 1994
Vol. 2. 1993
Vol. 1. 1992
Supplementa:
Suppl. 2. 2018