Middle-late devonian placoderms (Pisces: Antiarchi) from Central and northern Asia

Asterolepis alticristata n. sp. (Antiarchi) from the Upper Devonian (Frasnian) of Nunavut, Canada, and a report on the antiarch diversity of the Fram Formation

“…indet. according to long, narrow dimensions that taper at cranial and caudal ends, and the overlap of this plate onto mixilateral plates (Moloshnikov 2008). This anterior median dorsal plate belongs to a different size category than the low-crested anterior median dorsal plates from NV2K17 that are referred to Asterolepis cf.…”

“…indet. according to the presence of a wide postpineal that sutures with the lateral plates and separates the nuchal plate from the orbital opening (Moloshnikov 2008).…”

“…indet. is supported by a wide area of overlap by the anterior median dorsal plate (Moloshnikov 2008). The anterior median dorsal plate of Grossolepis also overlaps the mixilateral plate; we assign NUFV 852 to cf.…”

“…Of note, among the antiarch material from Ile Vanier, there is a bothriolepidoid premedian plate (NUFV 1308 from NV9913; Fig. 9M, N) that is diagnosed by the preorbital recess (Moloshnikov 2008), and an asterolepidoid nuchal (NUFV 1307 from NV9917; Fig. 9O-Q) that is diagnosed by the lack of orbital margin (Moloshnikov 2008).…”

Systematic Position of Antiarchs (Vertebrata, Placodermi) From the Famennian of Tver Region, Russia

“…Áîò ðè î ëå ïè äè äû Bothriolepididae subfam., gen. et sp. indet, ñõî aeèå ñ ëèâ íî ëå ïè ñà ìè, òàê aeå âñòðå ÷å íû â âåð õíå äå âîí ñêèõ îò ëî aeå íè ÿõ Êóç íåöêî ãî ïðî ãè áà Þaeíîé Ñè áè ðè [8,16].…”