• Thumbnail for Echinognathus
    Echinognathus is a genus of eurypterid, an extinct group of aquatic arthropods. The type and only species of Echinognathus, E. clevelandi, is known from...
    16 KB (1,579 words) - 23:20, 8 September 2023
  • Thumbnail for Megalograptus
    likely closely related, to the genus Echinognathus. In 1934, Størmer classified Megalograptus and Echinognathus, together with the genera Mixopterus and...
    43 KB (4,651 words) - 10:02, 29 June 2024
  • Thumbnail for Eocarcinosoma
    Mixopterus Echinognathus...
    12 KB (1,228 words) - 10:16, 3 December 2023
  • Thumbnail for Eurypterid
    predators, classified in the family Megalograptidae (comprising the genera Echinognathus, Megalograptus and Pentecopterus), are likely to represent the first...
    93 KB (10,206 words) - 18:40, 27 July 2024
  • near the end of the 19th century. Carcinosomatidae Cincta Chasmataspis Echinognathus Eocarcinosoma Megalograptus Timeline of eurypterid research Caster,...
    17 KB (1,624 words) - 06:36, 6 May 2024
  • Thumbnail for Megalograptidae
    Megalograptidae Caster & Kjellesvig-Waering, 1955 Megalograptus Miller, 1874 Echinognathus Walcott, 1882 Pentecopterus Lamsdell et al., 2015 Paleontology portal...
    4 KB (349 words) - 08:40, 25 August 2021
  • Thumbnail for Pentecopterus
    Echinognathus clevelandi...
    11 KB (1,286 words) - 21:40, 25 July 2024
  • Thumbnail for Terropterus
    Echinognathus clevelandi...
    14 KB (1,583 words) - 07:28, 27 September 2023
  • Thumbnail for Carcinosomatidae
    'Carcinosomidae', in 1934, to contain the four genera Carcinosoma, Mixopterus, Echinognathus and Megalograptus. The family was amended by Erik N. Kjellesvig-Waering...
    26 KB (2,574 words) - 08:15, 9 September 2023
  • Thumbnail for List of eurypterid genera
    Dunsopterus Waterston 1968 Jr. synonym N/A N/A Synonym of Hibbertopterus. Echinognathus Walcott 1882 Valid Ordovician  United States Eocarcinosoma Caster &...
    42 KB (1,432 words) - 03:09, 3 December 2023
  • Thumbnail for Timeline of eurypterid research
    kopaninensis and P. nobilis. Walcott described the genus and species Echinognathus clevelandi. 1873 Friedrich Goldenberg coined the name Polyzosternites...
    83 KB (7,479 words) - 18:12, 22 June 2024