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#ExtinctFishoftheDay: Duyunolepis, a slightly more streamlined galeaspid, part of a small family that shows up rather late in galeaspid/armored jawless fish existence (mid-Devonian/400 Mya). Duyunolepids inhabited deeper coastal waters than most other galeaspids. 🎨@paleofan
#ExtinctFishoftheDay: Sinogaleaspis, a member of the Galeaspida, a group of mid-Paleozoic armored jawless fishes exclusive to China and SE Asia. The central slit is a spiracle-like opening leading to the gills, the real mouth is beneath! 🎨Shan et al. 2020 @eLife @ZhuEarlyFishLab
#ExtinctFishoftheDay: Belantsea, a tiny cartilaginous ratfish (Holocephali) from Bear Gulch, Montana. It was an agile reef fish with a beak of "fangs". It's unclear whether it moved like a tang, frogfish, or stingray given enlarged fins and flattened fossils
#ExtinctFishoftheDay Harpagofututor, another Carboniferous "eel" related to ratfish/ghost sharks (Holocephali), with toothplates for shell-crushing. The name ("grappling hook copulator") is for the males' head-clasper "antlers", which females bit during mating! (Nix Illustration)
@PennSAS junior Nyazia Sajdah-Bey teaches #GSA2018 all about weird 300 million Iniopterygians, early relatives of sharks with their pectoral fins attached to the tops of their heads. Congratulations on a great first academic talk, Nyazia! @geosociety @Paleo_Society
#Tedtalk #Paleoart #2: A post-extinction Carboniferous ocean, featuring sea lilies (crinoids) and shell-crushing fishes. By @paleocreations
Highlighting the #Paleoart in my #TEDtalk, 1/day. First, 360 million year old Andreyevka-2 fishes by John Megahan. https://t.co/tZIDpwbVSg
#DeadFishofTheWeek: Hibernaspis, a heterostracan from Siberia with a fused, spiky head shield, tiny eyes and mini-mouth. Pic: @paleofan