"Chasmataspidids, sometime referred to as chasmataspids, are a group of extinct chelicerate arthropods that form the order Chasmataspidida. Chasmataspidids are probably related to horseshoe crabs (Xiphosura) and/or sea scorpions (Eurypterida), with more recent studies suggest that they form a clade (Dekatriata) with Eurypterida and Arachnida. Chasmataspidids are known sporadically in the fossil record through to the mid-Devonian, with possible evidence suggesting that they were also present during the late Cambrian. Chasmataspidids are most easily recognised by having an opisthosoma divided into a wide forepart (preabdomen) and a narrow hindpart (postabdomen) each comprising 4 and 9 segments respectively. There is some debate about whether they form a natural (i.e. monophyletic) group."@en . . . . . . . . "Chasmataspidids, sometime referred to as chasmataspids, are a group of extinct chelicerate arthropods that form the order Chasmataspidida. Chasmataspidids are probably related to horseshoe crabs (Xiphosura) and/or sea scorpions (Eurypterida), with more recent studies suggest that they form a clade (Dekatriata) with Eurypterida and Arachnida. Chasmataspidids are known sporadically in the fossil record through to the mid-Devonian, with possible evidence suggesting that they were also present during the late Cambrian. Chasmataspidids are most easily recognised by having an opisthosoma divided into a wide forepart (preabdomen) and a narrow hindpart (postabdomen) each comprising 4 and 9 segments respectively. There is some debate about whether they form a natural (i.e. monophyletic) group."@en . . . . . . "*\u2020Chasmataspididae (Caster & Brooks, 1956)\n*\u2020Diploaspididae (St\u00F8rmer, 1972)\n*\u2020Kiaeria (St\u00F8rmer, 1934)"@en . . . . . "*Diploaspidida (Simonetta & Delle Cave, 1978)"@en . . "1089970663"^^ . . . . . . . "Summarized phylogenetic position of Chasmataspidida as of 2010s."@en . . . . . . . . "Chasmataspidida"@it . . . . . . "Chasmataspidida"@en . "Reconstruction of Dvulikiaspis menneri , Octoberaspis ushakovi , Hoplitaspis hiawathai , Chasmataspis laurencii and Diploaspis casteri ."@en . . "31065"^^ . . . . . . "Chasmataspidida"@de . . "\u30AB\u30B9\u30DE\u30BF\u30B9\u30D4\u30B9\u985E\uFF08Chasmataspidid, Chasmataspid, \u5B66\u540D\uFF1AChasmataspidida\uFF09\u306F\u3001\u92CF\u89D2\u985E\u306B\u5C5E\u3059\u308B\u5316\u77F3\u7BC0\u8DB3\u52D5\u7269\u306E\u5206\u985E\u7FA4\uFF08\u76EE\uFF09\u306E1\u3064\u3002\u30AB\u30D6\u30C8\u30AC\u30CB\u3084\u30A6\u30DF\u30B5\u30BD\u30EA\u306B\u4F3C\u305F\u59FF\u3067\u30014\u7BC0\u306E\u5E45\u5E83\u3044\u524D\u8179\u90E8\u30689\u7BC0\u306E\u7D30\u3044\u5F8C\u8179\u90E8\u3092\u3082\u3064\u3002\u4EE3\u8868\u7684\u306A\u3060\u3051\u3067\u306A\u304F\u3001\u306A\u3069\u5341\u6570\u7A2E\u3082\u542B\u307E\u308C\u308B\u3002 \u5C11\u306A\u304F\u3068\u3082\u53E4\u751F\u4EE3\u306E\u30AA\u30EB\u30C9\u30D3\u30B9\u7D00\u304B\u3089\u30C7\u30DC\u30F3\u7D00\u306B\u304B\u3051\u3066\u751F\u606F\u3057\u3001\u3055\u3089\u306B\u65E9\u671F\u306E\u30AB\u30F3\u30D6\u30EA\u30A2\u7D00\u304B\u3089\u672C\u7FA4\u7531\u6765\u306E\u53EF\u80FD\u6027\u304C\u3042\u308B\u751F\u75D5\u5316\u77F3\u3082\u767A\u898B\u3055\u308C\u308B\u3002\u5E0C\u5C11\u3067\u672A\u3060\u306B\u4E0D\u660E\u70B9\u304C\u591A\u304F\u3001\u30A6\u30DF\u30B5\u30BD\u30EA\u306A\u3069\u3068\u306E\u985E\u7E01\u95A2\u4FC2\u304C\u8B70\u8AD6\u306E\u7684\u3068\u306A\u3063\u3066\u3044\u308B\u3002"@ja . . . . . "Caster & Brooks, 1956"@en . . "Chasmataspidida"@ja . . . . "Fossils of Hoplitaspis hiawathai."@en . "Chasmataspidida ist eine ausgestorbene Ordnung innerhalb der Kieferklauentr\u00E4ger (Chelicerata)."@de . . . . . . . . . . "I casmataspididi (Chasmataspidida), a volte indicati come casmataspidi (Chasmataspida), sono un gruppo di artropodi chelicerati estinti, forse imparentati con gli xifosuri, gli euripteridi o gli aracnidi. Vissero tra l'Ordoviciano medio e il Devoniano medio (circa 470 - 390 milioni di anni fa) e i loro resti fossili sono stati ritrovati in Europa, Nordamerica e Asia."@it . . . . . . . . "20200607"^^ . . . . . "13860559"^^ . . "Chasmataspidida"@en . . . . . . "Clades"@en . . . . . . . . . . . . . . . . . . . . "Chasmataspidida ist eine ausgestorbene Ordnung innerhalb der Kieferklauentr\u00E4ger (Chelicerata)."@de . . . . "Internal phylogeny of Chasmataspidida based on Selden, Lamsdell & Liu , with addition of Diploaspis praecursor based on Lamsdell & Briggs ."@en . . . . . "I casmataspididi (Chasmataspidida), a volte indicati come casmataspidi (Chasmataspida), sono un gruppo di artropodi chelicerati estinti, forse imparentati con gli xifosuri, gli euripteridi o gli aracnidi. Vissero tra l'Ordoviciano medio e il Devoniano medio (circa 470 - 390 milioni di anni fa) e i loro resti fossili sono stati ritrovati in Europa, Nordamerica e Asia."@it . . . . . . . "(Possible Cambrian record)"@en . . . . . . . "\u30AB\u30B9\u30DE\u30BF\u30B9\u30D4\u30B9\u985E\uFF08Chasmataspidid, Chasmataspid, \u5B66\u540D\uFF1AChasmataspidida\uFF09\u306F\u3001\u92CF\u89D2\u985E\u306B\u5C5E\u3059\u308B\u5316\u77F3\u7BC0\u8DB3\u52D5\u7269\u306E\u5206\u985E\u7FA4\uFF08\u76EE\uFF09\u306E1\u3064\u3002\u30AB\u30D6\u30C8\u30AC\u30CB\u3084\u30A6\u30DF\u30B5\u30BD\u30EA\u306B\u4F3C\u305F\u59FF\u3067\u30014\u7BC0\u306E\u5E45\u5E83\u3044\u524D\u8179\u90E8\u30689\u7BC0\u306E\u7D30\u3044\u5F8C\u8179\u90E8\u3092\u3082\u3064\u3002\u4EE3\u8868\u7684\u306A\u3060\u3051\u3067\u306A\u304F\u3001\u306A\u3069\u5341\u6570\u7A2E\u3082\u542B\u307E\u308C\u308B\u3002 \u5C11\u306A\u304F\u3068\u3082\u53E4\u751F\u4EE3\u306E\u30AA\u30EB\u30C9\u30D3\u30B9\u7D00\u304B\u3089\u30C7\u30DC\u30F3\u7D00\u306B\u304B\u3051\u3066\u751F\u606F\u3057\u3001\u3055\u3089\u306B\u65E9\u671F\u306E\u30AB\u30F3\u30D6\u30EA\u30A2\u7D00\u304B\u3089\u672C\u7FA4\u7531\u6765\u306E\u53EF\u80FD\u6027\u304C\u3042\u308B\u751F\u75D5\u5316\u77F3\u3082\u767A\u898B\u3055\u308C\u308B\u3002\u5E0C\u5C11\u3067\u672A\u3060\u306B\u4E0D\u660E\u70B9\u304C\u591A\u304F\u3001\u30A6\u30DF\u30B5\u30BD\u30EA\u306A\u3069\u3068\u306E\u985E\u7E01\u95A2\u4FC2\u304C\u8B70\u8AD6\u306E\u7684\u3068\u306A\u3063\u3066\u3044\u308B\u3002"@ja . . . . . . . . . "right"@en . . "Chasmataspidida"@en . . .