• Thumbnail for Placoderm
    Placoderms (from Greek πλάξ (plax, plakos) 'plate' and δέρμα (derma) 'skin') are members of the class Placodermi, a group of prehistoric fish known from...
    42 KB (4,235 words) - 16:47, 25 April 2024
  • Thumbnail for List of placoderm genera
    This list of placoderms is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be members...
    46 KB (951 words) - 16:52, 25 April 2024
  • Thumbnail for Actinolepis (placoderm)
    Actinolepis is an extinct genus of actinolepid placoderm from the Early Devonian. Four species are known: A. magna from Estonia, A. spinosa from Latvia...
    3 KB (194 words) - 19:46, 6 January 2024
  • Thumbnail for Dunkleosteus
    Dunkleosteus (category Placoderms of Africa)
    Dunkleosteus consists of ten species, some of which are among the largest placoderms ("plate-skinned") to have ever lived: D. terrelli, D. belgicus, D. denisoni...
    48 KB (4,028 words) - 18:43, 18 April 2024
  • Thumbnail for Evolution of fish
    record from the Silurian by two groups of fish: the armoured fish known as placoderms, which evolved from the ostracoderms; and the Acanthodii (or spiny sharks)...
    46 KB (4,511 words) - 16:55, 25 April 2024
  • Thumbnail for Gnathostomata
    thought to have lacked pectoral or pelvic fins. In addition to this, some placoderms (extinct fish with bony plates) were shown to have a third pair of paired...
    29 KB (1,984 words) - 12:20, 25 March 2024
  • Thumbnail for Acanthodii
    characteristics are considered homologous characteristics derived from common placoderm ancestors[clarification needed], and present also in basal cartilaginous...
    18 KB (1,392 words) - 17:03, 26 January 2024
  • Thumbnail for Fish
    including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. Most fish are cold-blooded, their body temperature varying...
    101 KB (10,032 words) - 03:01, 24 April 2024
  • Thumbnail for Chondrichthyes
    connection between the teeth and the original dermal scales. The old placoderms did not have teeth at all, but had sharp bony plates in their mouth. Thus...
    44 KB (2,435 words) - 04:21, 21 March 2024
  • research presented in 2024 is a list of new taxa of jawless vertebrates, placoderms, acanthodians, fossil cartilaginous fishes, bony fishes, and other fishes...
    60 KB (4,015 words) - 18:09, 28 April 2024
  • Thumbnail for Devonian
    leading the Devonian to often be dubbed the Age of Fishes. The armored placoderms began dominating almost every known aquatic environment. In the oceans...
    69 KB (7,577 words) - 16:40, 25 April 2024
  • Thumbnail for Hunsrück Slate
    fishes have been described from the Hunsruck slate. Several genera of placoderm armoured fish have been recorded, including some preserved in three dimensions...
    27 KB (1,506 words) - 20:36, 14 March 2024
  • Thumbnail for Bothriolepis
    Bothriolepis (category Placoderm genera)
    lepis 'scale') was a widespread, abundant and diverse genus of antiarch placoderms that lived during the Middle to Late Devonian period of the Paleozoic...
    36 KB (3,965 words) - 16:08, 25 April 2024
  • Thumbnail for Geologic time scale
    goniatites). Trilobites and ostracoderms decline, while jawed fishes (placoderms, lobe-finned and ray-finned bony fish, and acanthodians and early cartilaginous...
    172 KB (9,395 words) - 04:29, 22 April 2024
  • Thumbnail for Vertebrate
    Wenjin; Jia, Liantao; Lu, Jing (21 October 2016). "A Silurian maxillate placoderm illuminates jaw evolution". Science. 354 (6310): 334–336. Bibcode:2016Sci...
    77 KB (7,023 words) - 02:52, 10 April 2024
  • Thumbnail for Titanichthys
    Titanichthys (category Placoderms of North America)
    Titanichthys is an extinct genus of giant, aberrant marine placoderm from shallow seas of the Late Devonian of Morocco, Eastern North America, and possibly...
    10 KB (859 words) - 03:25, 13 April 2024
  • Thumbnail for Silurian
    during the Silurian was the diversification of jawed fish, which include placoderms, acanthodians (which gave rise to cartilaginous fish) and osteichthyan...
    57 KB (5,666 words) - 09:06, 22 April 2024
  • Thumbnail for Predation
    of the first fish to have jaws were the armoured and mainly predatory placoderms of the Silurian to Devonian periods, one of which, the 6 m (20 ft) Dunkleosteus...
    109 KB (11,477 words) - 16:56, 25 April 2024
  • bonytongue fish of the family Osteoglossidae Draconichthys, an arthrodire placoderm named after Stomiid dragonfishes Dragonfish (novel), a 2015 novel by Vu...
    866 bytes (134 words) - 19:46, 16 March 2023
  • Thumbnail for Teleostomi
    class Placodermi. Recent studies indicate that Osteichthyes evolved from placoderms like Entelognathus, while acanthodians are more closely related to modern...
    6 KB (458 words) - 12:56, 14 April 2024
  • Thumbnail for Arthrodira
    groups of placoderms. Arthrodire placoderms are notable for the movable joint between armor surrounding their heads and bodies. Like all placoderms, they...
    17 KB (990 words) - 03:48, 14 April 2024
  • Thumbnail for Tetrapod
    Devonian fishes, including an early shark Cladoselache, Eusthenopteron and other lobe-finned fishes, and the placoderm Bothriolepis (Joseph Smit, 1905)....
    101 KB (10,229 words) - 14:34, 6 April 2024
  • Thumbnail for Bothriolepidoidei
    Bothriolepidoidei is a suborder of antiarch placoderm fishes. The group is considered paraphyletic. The cladogram is taken from Bothriolepid antiarchs...
    3 KB (95 words) - 06:56, 27 April 2024
  • conodonts and ostracoderms, as well as jawed fish such as the armored placoderms (e.g. Dunkleosteus), the spiny acanthodians and early bony fish. The Devonian...
    59 KB (6,061 words) - 10:45, 19 April 2024
  • Thumbnail for Melanosteus
    Melanosteus (category Placoderms)
    Melanomontanosteus is an extinct genus of selenosteid placoderm that lived during the Late Devonian. It contains one valid species, M. occitanus, known...
    6 KB (239 words) - 10:59, 18 March 2024
  • Thumbnail for Tiktaalik
    of its body, which is not common in other fish (Tarrasius, Mandageria, placoderms and extant seahorses being some exceptions; see also Lepidogalaxias and...
    58 KB (6,016 words) - 21:51, 5 April 2024
  • Thumbnail for Jaw
    probably originally evolved in the Silurian period and appeared in the Placoderm fish which further diversified in the Devonian. The two most anterior...
    8 KB (847 words) - 08:01, 20 April 2024
  • Thumbnail for Acanthothoraci
    Acanthothoraci (category Placoderms)
    (spine chests) is an extinct group of chimaera-like placoderms closely related to the rhenanid placoderms. Superficially, the acanthoracids resembled scaly...
    10 KB (667 words) - 02:54, 14 February 2024
  • Thumbnail for Timeline of human evolution
    A placoderm...
    86 KB (3,507 words) - 23:55, 3 April 2024
  • research presented in 2022 is a list of new taxa of jawless vertebrates, placoderms, acanthodians, fossil cartilaginous fishes, bony fishes, and other fishes...
    143 KB (10,297 words) - 03:14, 5 February 2024