{"id":374756,"date":"2026-06-04T18:27:40","date_gmt":"2026-06-04T17:27:40","guid":{"rendered":"https:\/\/zakrasnejsivimperk.cz\/?p=374756"},"modified":"2026-06-04T21:02:34","modified_gmt":"2026-06-04T20:02:34","slug":"ceska-republika-pri-razbe-prazskeho-metra-byl-objeven-novy-druh-prvohorniho-clenovce","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=374756","title":{"rendered":"\u010cESK\u00c1 REPUBLIKA: P\u0159i ra\u017eb\u011b pra\u017esk\u00e9ho metra byl objeven nov\u00fd druh prvohorn\u00edho \u010dlenovce"},"content":{"rendered":"
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Radek Labu\u0165a \/ Foto na str\u00e1nce: Luk\u00e1\u0161 Laibl<\/figcaption><\/figure>\n

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Z nen\u00e1padn\u00e9 fosilie nalezen\u00e9 p\u0159i stavb\u011b metra D se stal zcela nov\u00fd druh d\u00e1vn\u00e9ho \u010dlenovce. Soomaspis labutai \u017eil asi p\u0159ed 448 miliony let, nejbli\u017e\u0161\u00ed zn\u00e1m\u00fd p\u0159\u00edbuzn\u00fd ale poch\u00e1zel z ji\u017en\u00ed Afriky. Objev tak m\u011bn\u00ed pohled na roz\u0161\u00ed\u0159en\u00ed t\u011bchto \u017eivo\u010dich\u016f a p\u0159in\u00e1\u0161\u00ed nov\u00e9 poznatky o \u017eivot\u011b v dob\u011b prvn\u00edho hromadn\u00e9ho vym\u00edr\u00e1n\u00ed.<\/h6>\n

\"\"Praha stoj\u00ed z velk\u00e9 \u010d\u00e1sti na hornin\u00e1ch prvohorn\u00edho st\u00e1\u0159\u00ed. P\u0159i v\u011bt\u0161\u00edch stavebn\u00edch prac\u00edch se pravideln\u011b nach\u00e1zej\u00ed zkamen\u011bliny \u2013 nap\u0159\u00edklad trilobiti, hlavono\u017eci nebo d\u00e1vn\u00ed ostnoko\u017eci. Na hald\u011b kamen\u00ed vyt\u011b\u017een\u00e9ho p\u0159i ra\u017eb\u011b metra D v\u0161ak Radek Labu\u0165a \u2013 sb\u011bratel zkamen\u011blin a majitel muzea Trilopark \u2013 objevil n\u011bco mnohem vz\u00e1cn\u011bj\u0161\u00edho. Drobn\u00e1, zhruba dvoucentimetrov\u00e1 fosilie na prvn\u00ed pohled p\u0159ipom\u00ednala k\u0159\u00ed\u017eence pavouka a trilobita. N\u00e1lez proto p\u0159inesl Luk\u00e1\u0161i Laiblovi z Geologick\u00e9ho \u00fastavu AV \u010cR, kter\u00fd se specializuje na fosiln\u00ed \u010dlenovce.<\/p>\n

\u201eUk\u00e1zalo se, \u017ee jde o v\u011bd\u011b dosud nezn\u00e1m\u00fd druh, bl\u00edzce p\u0159\u00edbuzn\u00fd trilobit\u016fm. Na rozd\u00edl od nich v\u0161ak m\u011bl jen m\u011bkk\u00fd krun\u00fd\u0159. Pojmenovali jsme ho Soomaspis labutai, na po\u010dest jeho objevitele Radka Labuti,\u201c<\/em> \u0159\u00edk\u00e1 Luk\u00e1\u0161 Laibl.<\/p>\n

Soomaspis labutai byl mal\u00fd \u010dlenovec s ov\u00e1ln\u00fdm \u201eoc\u00e1skem\u201c a krun\u00fd\u0159em pokryt\u00fdm drobn\u00fdmi jamkami. \u017dil na konci ordoviku p\u0159ibli\u017en\u011b p\u0159ed 448 miliony let \u2013 tedy v obdob\u00ed p\u0159ed n\u00e1stupem rozs\u00e1hl\u00e9ho zaledn\u011bn\u00ed, kter\u00e9 vedlo k prvn\u00edmu hromadn\u00e9mu vym\u00edr\u00e1n\u00ed na Zemi.<\/p>\n

\u201eUr\u010dit jeho st\u00e1\u0159\u00ed bylo pom\u011brn\u011b snadn\u00e9,\u201c<\/em> vysv\u011btluje spoluautorka \u010dl\u00e1nku Jana Bruthansov\u00e1 z N\u00e1rodn\u00edho muzea. \u201eRa\u017ebu metra D dlouhodob\u011b sleduji a vedu si podrobnou dokumentaci o hornin\u00e1ch a zkamen\u011blin\u00e1ch prakticky v ka\u017ed\u00e9 \u010d\u00e1sti tunelu. I kdy\u017e byl n\u00e1lez u\u010din\u011bn na hald\u011b suti, poda\u0159ilo se n\u00e1m dohledat, odkud materi\u00e1l poch\u00e1z\u00ed. V\u00edme tak, \u017ee jde o spodn\u00ed vrstvy tzv. kr\u00e1lodvorsk\u00e9ho souvrstv\u00ed, kter\u00e9 se ukl\u00e1dalo pr\u00e1v\u011b na konci ordoviku.\u201c<\/em><\/p>\n

Nejbli\u017e\u0161\u00ed p\u0159\u00edbuzn\u00fd tis\u00edce kilometr\u016f daleko<\/h6>\n

Zaj\u00edmavosti t\u00edm ale nekon\u010d\u00ed. Nejbli\u017e\u0161\u00ed zn\u00e1m\u00fd p\u0159\u00edbuzn\u00fd tohoto druhu, Soomaspis splendida, byl v 90. letech minul\u00e9ho stolet\u00ed nalezen v Ji\u017en\u00ed Africe. Poch\u00e1z\u00ed z hornin star\u00fdch asi 443 milion\u016f let a \u017eil tedy v dob\u011b, kdy ledovce z konce ordoviku t\u00e1ly a oteplovalo se.<\/p>\n

\u201eSoomaspis splendida z Ji\u017en\u00ed Afriky byl pova\u017eov\u00e1n za mimo\u0159\u00e1dn\u011b vz\u00e1cn\u00fd druh a dlouho jsme si mysleli, \u017ee \u0161lo o lok\u00e1ln\u00ed zvl\u00e1\u0161tnost \u2013 jak\u00e9hosi ordovick\u00e9ho endemita,\u201c<\/em> \u0159\u00edk\u00e1 Luk\u00e1\u0161 Laibl. \u201eD\u00edky n\u00e1lezu z Prahy ale v\u00edme, \u017ee r\u016fzn\u00e9 druhy rodu Soomaspis musely ob\u00fdvat rozs\u00e1hl\u00e9 oblasti tehdej\u0161\u00edho kontinentu Gondwany. Dne\u0161n\u00ed Prahu a Ji\u017en\u00ed Afriku od sebe tehdy d\u011blily tis\u00edce kilometr\u016f. N\u00e1lez Radka Labuti je tak trochu, jako kdybyste ve Vltav\u011b z ni\u010deho nic objevili velekraba japonsk\u00e9ho.\u201c<\/em><\/p>\n

P\u0159e\u017eiv\u0161\u00ed v hlubok\u00e9m mo\u0159i<\/h6>\n

Nov\u00fd druh nav\u00edc p\u0159in\u00e1\u0161\u00ed d\u016fle\u017eit\u00e9 informace o p\u0159e\u017e\u00edv\u00e1n\u00ed organism\u016f v dob\u011b v\u00fdrazn\u00fdch klimatick\u00fdch zm\u011bn.<\/p>\n

\u201eZat\u00edmco Soomaspis labutai \u017eil je\u0161t\u011b p\u0159ed ordovickou dobou ledovou a hromadn\u00fdm vym\u00edr\u00e1n\u00edm, jeho jihoafrick\u00fd p\u0159\u00edbuzn\u00fd se objevuje a\u017e po n\u011bm. Zd\u00e1 se, \u017ee tito nen\u00e1padn\u00ed \u010dlenovci dok\u00e1zali p\u0159e\u017e\u00edt prudk\u00e9 klimatick\u00e9 v\u00fdkyvy, kter\u00e9 vyhubily mnoho jin\u00fdch \u017eivo\u010dich\u016f. D\u00e1 se \u0159\u00edct, \u017ee \u0161lo o d\u00e1vn\u00e9 ,survivory\u2019. Jejich tajemstv\u00edm bylo nejsp\u00ed\u0161 to, \u017ee ob\u00fdvali hlub\u0161\u00ed \u010d\u00e1sti mo\u0159e, kter\u00fdch se klimatick\u00e9 zm\u011bny p\u0159\u00edli\u0161 nedotkly, a zvl\u00e1dly p\u0159e\u017e\u00edt v prost\u0159ed\u00ed s n\u00edzk\u00fdm obsahem kysl\u00edku,\u201c<\/em> uzav\u00edr\u00e1 Luk\u00e1\u0161 Laibl.<\/p>\n

Soomaspis labutai bude k vid\u011bn\u00ed ve st\u00e1l\u00e9 expozici N\u00e1rodn\u00edho muzea, kam ho Radek Labu\u0165a v\u011bnoval. \u010cl\u00e1nek vy\u0161el ve speci\u00e1ln\u00edm \u010d\u00edsle \u010dasopisu Bulletin of Geosciences. Na \u010dl\u00e1nku spolupracovali tak\u00e9 kolegov\u00e9 z P\u0159\u00edrodov\u011bdeck\u00e9 fakulty Univerzity Karlovy a Univerzity ve Flinders v Austr\u00e1lii.<\/p>\n

(tz-av\u010dr)<\/strong><\/p>\n

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