• Thumbnail for Drepanaspis
    first outline restorations from articulated specimens of Drepanaspis. A second species of Drepanaspis, D. sehrieli, would later be discovered, followed by...
    21 KB (2,044 words) - 20:25, 4 July 2024
  • Thumbnail for Sacabambaspis
    Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    9 KB (918 words) - 01:16, 7 August 2024
  • Thumbnail for List of prehistoric jawless fish genera
    See also †Darmuthia †Didymaspis †Dikenaspis †Dinaspidella †Dipnoides †Drepanaspis †Drepanolepis †Dyreaspis Contents:  A B C D E F G H I J K L M N O P Q...
    13 KB (1,368 words) - 17:28, 11 March 2022
  • Thumbnail for Field Museum of Natural History
    Evolving Planet Type Specimen Notes Cardipeltis agnathan fossil skeleton Drepanaspis agnathan fossil skeleton Tiktaalik sarcopterygian fossil skeleton Acheloma...
    80 KB (6,780 words) - 03:25, 14 August 2024
  • Thumbnail for Psammosteida
    predominantly benthic habit. The earliest unequivocal psammosteid is Drepanaspis of Early Devonian Germany, which is either included in the family Psammosteidae...
    2 KB (131 words) - 12:06, 20 August 2021
  • Thumbnail for Arandaspis
    Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    3 KB (250 words) - 08:59, 16 May 2024
  • Thumbnail for Astraspis
    Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    3 KB (259 words) - 02:01, 23 July 2024
  • Thumbnail for Pteraspidomorphi
    Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    5 KB (332 words) - 15:33, 22 November 2023
  • Thumbnail for Traquairaspidiformes
    of Weigeltaspis suggest a living animal similar to psammosteids like Drepanaspis. The armor of Phialaspis symmondsi (once considered as species of Traquairaspis)...
    5 KB (381 words) - 12:50, 19 February 2024
  • Thumbnail for Arandaspida
    Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    5 KB (430 words) - 10:09, 26 May 2024
  • Thumbnail for Psammosteidae
    arose during the Early Devonian, with the first (and best) known genus, Drepanaspis from the Hunsrück lagerstätte. The Psammosteids were the only heterostracans...
    2 KB (103 words) - 09:21, 1 March 2021
  • Thumbnail for Doryaspis
    Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    4 KB (451 words) - 02:23, 3 December 2023
  • Thumbnail for Hunsrück Slate
    the most commonly preserved vertebrates, particularly the flattened Drepanaspis, notable for its upwards-facing mouth, and the streamlined Pteraspis...
    28 KB (1,506 words) - 19:12, 10 July 2024
  • Thumbnail for Pteraspidiformes
    form that was originally described as a psammosteid closely related to Drepanaspis. Botella, Hector, and Richard A. Farina. "Flow pattern around the rigid...
    6 KB (623 words) - 12:39, 4 July 2023
  • Thumbnail for Protaspididae
    originally described as being North American psammosteids closely related to Drepanaspis by Orvig. Denison then redescribed them as being pteraspidids closely...
    8 KB (761 words) - 08:31, 18 June 2024
  • Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    1 KB (39 words) - 10:30, 10 March 2023
  • Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    2 KB (106 words) - 14:52, 11 June 2023
  • †Jamoytius) Class 4. †Heterostraci (e.g., †Astraspis, †Pteraspis, †Drepanaspis) Class 5. †Coelolepida (e.g., †Thelodus, †Lanarkia) Superclass 2. Gnathostomata...
    19 KB (1,579 words) - 06:49, 23 December 2023
  • Thumbnail for Hibernaspidoidei
    Tartuosteus Weigeltaspis? Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae...
    2 KB (175 words) - 18:18, 25 August 2023