Pycnosteus is an extinct genus of jawless fish from the Devonian. It is thought to have cruised through vegetation, eating small invertebrates which it...
1 KB (60 words) - 01:38, 6 September 2022
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
9 KB (909 words) - 22:56, 15 June 2025
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
3 KB (249 words) - 21:02, 12 July 2025
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
5 KB (403 words) - 21:55, 27 March 2025
(Rohonosteus) ornatus Rohon, 1899 T.? zheleznogorskensis Moloshnikov, 2009 Pycnosteus Mark-Kurik, E; Obruchev, D (1968). "ON THE EVOLUTION OF THE PSAMMOSTEIDS...
5 KB (454 words) - 07:09, 28 May 2025
dorsoventrally depressed, with a long, compressed tail. Some psammosteids, like Pycnosteus, have the ventral shield modified into a pedestal-like structure that...
6 KB (623 words) - 12:39, 4 July 2023
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
4 KB (306 words) - 05:40, 12 July 2025
†Procephalaspis †Protaspis †Psephaspis †Pteraspis †Ptomaspis †Pycnaspis †Pycnosteus Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also...
14 KB (1,419 words) - 18:15, 4 May 2025
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
5 KB (332 words) - 10:53, 28 June 2025
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
5 KB (465 words) - 20:10, 23 May 2025
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
2 KB (175 words) - 18:18, 25 August 2023
†Heterostraci Order: †Pteraspidiformes Suborder: †Psammosteida Family: †Psammosteidae Genera Drepanaspis Psammosteus Pycnosteus Schizosteus Tartuosteus...
1 KB (78 words) - 08:13, 11 December 2024
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
3 KB (240 words) - 13:16, 26 November 2024
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
2 KB (145 words) - 08:03, 24 May 2025
Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus...
1 KB (39 words) - 10:30, 10 March 2023