• Thumbnail for Xiphosura
    Xiphosura (/zɪfoʊˈsjʊərə/; from Ancient Greek ξίφος (xíphos) 'sword' and οὐρά (ourá) 'tail', in reference to its sword-like telson) is an order of arthropods...
    25 KB (2,228 words) - 02:04, 12 November 2024
  • Thumbnail for Merostomata
    scorpions) and the extant Xiphosura (horseshoe crabs). The term was originally used by James Dwight Dana to refer to Xiphosura only, but was emended by...
    6 KB (529 words) - 18:42, 27 July 2024
  • Thumbnail for Chelicerata
    appendages form spinnerets that extrude silk, while those of horseshoe crabs (Xiphosura) form gills. Like all arthropods, chelicerates' bodies and appendages...
    84 KB (8,305 words) - 22:38, 4 December 2024
  • Thumbnail for Limulus
    Limulus (redirect from Xiphosura (genus))
    Chelicerata Order: Xiphosura Family: Limulidae Genus: Limulus O. F. Müller, 1785 Type species Monoculus polyphemus Linnaeus, 1758 Synonyms Xiphosura...
    3 KB (241 words) - 03:04, 21 November 2023
  • Thumbnail for Arachnid
    identified as the group labelled "Euchelicerata".) A 2019 analysis nests Xiphosura deeply within Arachnida. Discovering relationships within the arachnids...
    56 KB (4,818 words) - 22:17, 18 December 2024
  • Thumbnail for Atlantic horseshoe crab
    include Limulus cyclops, Xiphosura americana, and Polyphemus occidentalis. It is the tail that earns this order its name Xiphosura, which derives from the...
    50 KB (5,484 words) - 00:58, 10 December 2024
  • Thumbnail for Horseshoe crab
    Horseshoe crab (category Xiphosura)
    ago in the Cretaceous. Limulidae is the only extant family of the order Xiphosura, and contains all four living species of horseshoe crabs: Carcinoscorpius...
    80 KB (8,090 words) - 23:03, 4 December 2024
  • Thumbnail for Arthropod
    Dibasterium † Offacolidae † Prosomapoda "Synziphosurina" (paraphyletic) Xiphosura Dekatriata Chasmataspidida † Houia † Winneshiekia † Eurypterida † Arachnida...
    132 KB (12,591 words) - 09:23, 22 December 2024
  • Thumbnail for Largest and heaviest animals
    The largest animal currently alive is the blue whale. The maximum recorded weight was 190 tonnes (209 US tons) for a specimen measuring 27.6 metres (91 ft)...
    169 KB (16,662 words) - 19:57, 19 December 2024
  • worms) Sipuncula (peanut worms) Arachnida (spiders, scorpions, and kin) Xiphosura (horseshoe crabs) Pycnogonida (sea spiders) Branchiopoda (fairy shrimp...
    8 KB (503 words) - 13:33, 8 August 2024
  • Thumbnail for Mangrove horseshoe crab
    Mangrove horseshoe crab (category Xiphosura)
    crab species, Tachypleus tridentatus and Carcinoscorpius rotundicauda (Xiphosura), in Hong Kong with a regional Asian comparison". Journal of Natural History...
    17 KB (2,023 words) - 02:13, 11 August 2024
  • Thumbnail for Paleobiota of the Solnhofen Limestone
    The Solnhofen Limestone or Solnhofen Plattenkalk is a collective term for multiple Late Jurassic lithographic limestones in southeastern Germany, which...
    134 KB (4,077 words) - 05:36, 22 December 2024
  • Thumbnail for Prosomapoda
    Prosomapoda is a clade of euchelicerates including the groups Xiphosura (horseshoe crabs) and Planaterga (a group comprising bunodids, pseudoniscids,...
    3 KB (234 words) - 17:41, 19 July 2024
  • The El Mers Group is a geological group in the Middle Atlas of Morocco. It is subdivided into three formations named the El Mers I, II, and III Formations...
    29 KB (1,217 words) - 17:32, 20 December 2024
  • Thumbnail for Scorpion
    Xiphosura (horseshoe crabs)...
    91 KB (9,250 words) - 17:13, 22 December 2024
  • Thumbnail for Chelicerae
    and the Opiliones, as well as in non-arachnid Chelicerata such as the Xiphosura and Eurypterida. The chelifores of the Pycnogonida may be homologous to...
    9 KB (924 words) - 09:52, 25 July 2024
  • Thumbnail for Insect
    Pycnogonida (sea spiders) Euchelicerata Xiphosura (horseshoe crabs) Arachnida (spiders, scorpions, ticks, mites)...
    134 KB (12,803 words) - 01:44, 21 December 2024
  • Thumbnail for Pedipalp
    chelae in most of these groups may not be homologous with those found in Xiphosura. The pedipalps are distinctly raptorial (i.e., modified for seizing prey)...
    7 KB (754 words) - 07:11, 13 December 2024
  • Thumbnail for Crustacean
    Pycnogonida (sea spiders) Euchelicerata Xiphosura (horseshoe crabs) Arachnida (spiders, scorpions, ticks, mites)...
    57 KB (4,897 words) - 09:19, 12 December 2024
  • Thumbnail for List of arthropod orders
    Arthropods are invertebrate animals having an exoskeleton, a segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They...
    17 KB (1,023 words) - 22:29, 29 October 2024
  • Thumbnail for Silurian
    Mikulic, DG; Kluessendorf, J (2005). "A new synziphosurine (Chelicerata: Xiphosura) from the Late Llandovery (Silurian) Waukesha Lagerstatte, Wisconsin,...
    59 KB (5,819 words) - 15:10, 19 December 2024
  • Thumbnail for Spider
    Xiphosura (horseshoe crabs)...
    124 KB (13,641 words) - 22:20, 4 December 2024
  • Thumbnail for Sea spider
    (2019-11-01). Halanych, Ken (ed.). "A Critical Appraisal of the Placement of Xiphosura (Chelicerata) with Account of Known Sources of Phylogenetic Error". Systematic...
    30 KB (3,158 words) - 14:00, 18 December 2024
  • Long Island Sound is a large marine estuary in the Northeastern United States. It forms the maritime border between the states of New York and Connecticut...
    14 KB (1,145 words) - 22:50, 24 October 2024
  • Thumbnail for Tachypleus tridentatus
    Tachypleus tridentatus (category Xiphosura)
    Ballesteros, Jesús A. (2019). "A Critical Appraisal of the Placement of Xiphosura (Chelicerata) with Account of Known Sources of Phylogenetic Error". Systematic...
    11 KB (1,276 words) - 10:14, 22 September 2024
  • Thumbnail for Synziphosurina
    Synziphosurina (category Xiphosura)
    crabs (Xiphosura). It was later identified as a grade composed of various basal euchelicerates, eventually excluded from the monophyletic Xiphosura sensu...
    11 KB (1,032 words) - 04:04, 9 December 2024
  • Thumbnail for Austrolimulus
    Austrolimulus (category Xiphosura)
    Evolution: What the Fossils Say and Why It Matters by Donald R. Prothero and Carl Buell Xiphosura at Palaeos.com Paleontology portal v t e v t e v t e...
    1 KB (87 words) - 20:08, 10 June 2022
  • Thumbnail for Anderella
    Scott C.; Lieberman, Bruce S. (2007). "A Carboniferous Synziphosurine (Xiphosura) from the Bear Gulch Limestone, Montana, USA". Palaeontology. 50 (4):...
    5 KB (427 words) - 00:47, 17 December 2023
  • Shpinev; D. V. Vasilenko (2018). "First fossil xiphosuran (Chelicerata, Xiphosura) egg clutch from the Carboniferous of Khakassia". Paleontological Journal...
    177 KB (9,355 words) - 17:32, 18 December 2024
  • Thumbnail for Triops
    digging behaviour uprooting young rice seedlings. Notostraca Lepidurus Xiphosura Synziphosurina Trilobite Denton Belk (2007). "Branchiopoda". In Sol Felty...
    20 KB (1,981 words) - 06:38, 11 November 2024