• Thumbnail for Acutiramus
    Acutiramus is a genus of giant predatory eurypterid, an extinct group of aquatic arthropods. Fossils of Acutiramus have been discovered in deposits of...
    34 KB (3,793 words) - 18:08, 25 August 2024
  • Thumbnail for Jaekelopterus
    present in Pterygotus and Acutiramus. Genital appendages can vary even within genera; for instance, the genital appendage of Acutiramus changes from species...
    34 KB (3,898 words) - 21:14, 4 October 2024
  • Thumbnail for Pterygotus
    and Acutiramus would be recognized as separate, but closely related, genera (Erettopterus by Erik N. Kjellesvig-Waering in 1961, and Acutiramus by Størmer...
    65 KB (7,622 words) - 18:27, 14 December 2024
  • Thumbnail for Arthropod
    (Phosphatocopina) Other examples of now extinct arthropod groups include Acutiramus (Eurypterida) Apankura (Euthycarcinoidea) Trimerus (Artiopoda) Concavicaris...
    132 KB (12,591 words) - 09:23, 22 December 2024
  • Thumbnail for Pterygotidae
    ever lived with some members of the family, such as Jaekelopterus and Acutiramus, exceeding 2 metres (6.6 ft) in length. Their fossilized remains have...
    37 KB (4,286 words) - 20:56, 3 November 2024
  • Thumbnail for Chelicerae
    three-segmented chelicerae Isolated fossil chelicera of a pterygotid eurypterid, Acutiramus cummingsi Having three-segmented chelate chelicerae is the primitive condition...
    9 KB (924 words) - 09:52, 25 July 2024
  • Thumbnail for Erettopterus
    (claws). Although some pterygotid eurypterids, such as Jaekelopterus or Acutiramus grew to gigantic proportions, it is estimated that the largest species...
    33 KB (3,625 words) - 15:58, 18 November 2024
  • Thumbnail for Eurypterid
    the Pterygotidae, is noted for several unusually large species. Both Acutiramus, whose largest member A. bohemicus measured 2.1 meters (6.9 ft), and Pterygotus...
    93 KB (10,214 words) - 14:20, 7 December 2024
  • Thumbnail for Ciurcopterus
    Jaekelopterus rhenaniae at 2.5 metres (8 ft, the largest known arthropod) and Acutiramus bohemicus at 2.1 metres (7 ft). Ciurcopterus possessed walking legs that...
    16 KB (1,712 words) - 21:15, 4 October 2024
  • metastoma of the studied eurypterid. Description of genital appendages of Acutiramus macrophthalmus is published by Cheng & Briggs (2024). A specimen of Tachypleus...
    126 KB (8,525 words) - 05:41, 23 December 2024
  • Thumbnail for Lagerstätte
    limestone have produced thousands of fossil eurypterids, such as giant Acutiramus and well-known Eurypterus, as well as other fauna like scorpions and fish...
    197 KB (10,416 words) - 04:26, 16 December 2024
  • Thumbnail for Largest prehistoric animals
    but this is based on an incomplete telson only. A close contender was Acutiramus bohemicus at 2.1 m (6 ft 11 in) in length. The largest megalograptid as...
    391 KB (40,791 words) - 21:41, 8 December 2024
  • Thumbnail for Pterygotioidea
    Acutiramus macrophthalmus Acutiramus bohemicus...
    23 KB (2,332 words) - 20:51, 23 January 2024
  • Thumbnail for Eusarcana
    acrocephalus occur together with other eurypterids Slimonia, Pterygotus and Acutiramus as well as with various trilobites (including Crotalocephalina, Otarion...
    27 KB (2,803 words) - 04:48, 19 November 2024
  • Thumbnail for Unionopterus
    Acutiramus...
    15 KB (1,677 words) - 07:24, 27 August 2024
  • Thumbnail for Hughmilleria
    Acutiramus macrophthalmus Acutiramus bohemicus...
    18 KB (1,775 words) - 13:58, 10 August 2024
  • Thumbnail for Hughmilleriidae
    Acutiramus macrophthalmus Acutiramus bohemicus...
    18 KB (1,810 words) - 15:59, 18 November 2024
  • Thumbnail for Parahughmilleria
    Acutiramus Jaekelopterus...
    23 KB (2,546 words) - 22:05, 18 August 2023
  • Member Image Notes Fish Nerepisacanthus denisoni Williamsville Eurypterids Acutiramus macrophthalmus Fiddlers Green Williamsville A. cummingsi Fiddlers Green...
    33 KB (1,902 words) - 05:56, 7 December 2024
  • Thumbnail for Timeline of eurypterid research
    Kjellesvig-Waering and Caster describe the species Acutiramus floweri. Kjellesvig-Waering describes the species Acutiramus suwanneensis. Kjellesvig-Waering and Caster...
    84 KB (7,529 words) - 09:56, 19 December 2024
  • Thumbnail for Herefordopterus
    Acutiramus macrophthalmus Acutiramus bohemicus...
    15 KB (1,493 words) - 15:59, 18 November 2024
  • †Achatella †Acidiscus †Acimetopus †Acodus †Actinoceras †Actinophyllum †Acutiramus †Agoniatites †Agraulos †Allotrioceras †Amorphognathus †Amplexopora †Amplexus...
    29 KB (828 words) - 07:57, 18 November 2024
  • Thumbnail for Borchgrevinkium
    and Skrytyaspis andersoni, as well as indeterminate eurypterids like Acutiramus. The lithology (physical characteristics of the rocks) of the place has...
    17 KB (1,716 words) - 18:25, 1 September 2024
  • Thumbnail for Nanahughmilleria
    Acutiramus Jaekelopterus...
    24 KB (2,557 words) - 23:44, 25 August 2024
  • known occurrences of Precambrian fossils in Florida. †Actinopteria †AcutiramusAcutiramus suwaneensis †Arisaigia †Arisaigia postornata – or unidentified comparable...
    98 KB (3,360 words) - 07:57, 18 November 2024
  • Thumbnail for Dvulikiaspis
    Borchgrevinkium taimyrensis and indeterminate species of eurypterids like Acutiramus. The lithology (physical characteristics of the rocks) of the place near...
    16 KB (1,742 words) - 15:52, 9 January 2024
  • depressus – type locality for species †AcutiramusAcutiramus floweri – type locality for species †Acutiramus macrophthalmus †Adelphobolbina †Adelphobolbina...
    183 KB (8,683 words) - 07:56, 18 November 2024
  • Thumbnail for Pittsfordipterus
    Acutiramus Jaekelopterus...
    14 KB (1,417 words) - 23:44, 25 August 2024
  • Thumbnail for Waeringopteridae
    Acutiramus Jaekelopterus...
    11 KB (1,083 words) - 02:12, 29 September 2024
  • Thumbnail for List of eurypterid genera
    Acutiramus....
    42 KB (1,432 words) - 03:09, 3 December 2023