<div class="hugo-align-justify" data-node-type="BlockFormat" style="color: rgb(51, 51, 51); font-family: FZYaSongS-R-GB, FZYaSong-M-GBK, "PingFang SC", miui, system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(250, 251, 252);"><p data-node-type="Paragraph" style="margin-bottom: 5.333vw; text-indent: unset; overflow-wrap: break-word; content: "viewport-units-buggyfill; margin: 0 0 5.333vw"; font-size: 1.125rem; line-height: 1.9125rem;"><span data-node-type="Text">震旦角石又名“中華角石”，是一種海生無脊椎軟體動物，屬于頭足類鸚鵡螺超目，現(xiàn)今已經(jīng)滅絕。它的化石僅產(chǎn)于我國，只分布在我國華南地區(qū)的奧陶系石灰?guī)r中，有很好的地層和地質(zhì)年代指示意義，具有很高的科研價(jià)值。在哪里發(fā)現(xiàn)它，就說明它所在的地層形成于奧陶紀(jì)。它也是我國《古生物化石保護(hù)條例實(shí)施辦法》重點(diǎn)保護(hù)、管理的化石之一。</span></h3></div> <p style="margin-bottom: 5.333vw; position: relative; text-align: center; content: "viewport-units-buggyfill; margin: 0 0 5.333vw"; color: rgb(51, 51, 51); font-family: FZYaSongS-R-GB, FZYaSong-M-GBK, "PingFang SC", miui, system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(250, 251, 252);"><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;">在</span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;">5.4億年前的寒武紀(jì)時(shí)期，地球上在很短的時(shí)間內(nèi)突然出現(xiàn)了各種各樣的</span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; text-indent: unset; text-align: justify;"></span><span style="font-size: 1.125rem; 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text-align: justify;">生物，我們稱這一事件為“寒武紀(jì)生命大爆發(fā)”。就在這個(gè)時(shí)期，震旦角石的祖先誕生了。生命大爆發(fā)帶來生物多樣性的同時(shí)，也加劇了競爭的殘酷性。物競天擇，適者生存，為了在殘酷的海洋環(huán)境中生存下去，角石必須不斷地進(jìn)化、改變，讓自己變得更為強(qiáng)大。到了奧陶紀(jì)中期，震旦角石出現(xiàn)了，它的外形呈圓錐狀，游泳速度更快、體型更大、可以更好地適應(yīng)各種環(huán)境。在黑暗幽深的海洋里，巨大的震旦角石常舞動著粗壯的觸腕，奮力向前噴出一股水柱，回流將成群的小魚送進(jìn)它的嘴里，震旦角石再合攏觸腕，小魚們便成為震旦角石的盤中餐。</span><span style="font-size: 1.125rem; text-align: justify; text-indent: unset;">震</span><span style="font-size: 1.125rem; text-align: justify; text-indent: unset;">旦角石以絕對的實(shí)力，占據(jù)著</span><span style="font-size: 1.125rem; text-align: justify; text-indent: unset;">奧</span><span style="font-size: 1.125rem; text-align: justify; text-indent: unset;">陶紀(jì)海洋霸主的位置。</span></h3><div class="hugo-align-justify" data-node-type="BlockFormat" style="color: rgb(51, 51, 51); font-family: FZYaSongS-R-GB, FZYaSong-M-GBK, "PingFang SC", miui, system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(250, 251, 252);"><p data-node-type="Paragraph" style="margin-bottom: 5.333vw; text-indent: unset; overflow-wrap: break-word; content: "viewport-units-buggyfill; margin: 0 0 5.333vw"; font-size: 1.125rem; line-height: 1.9125rem;"><span data-node-type="Text">直到有一天，成群的震旦角石死后被泥沙覆蓋、掩埋，它們的內(nèi)臟和觸腕早已灰飛煙滅，只留下石化的硬殼，紋飾歷歷在目，保留著生命最后一刻的張力。現(xiàn)代海洋中的章魚、烏賊、鸚鵡螺便是震旦角石的近親。</span><br data-node-type="Break"></h3><p data-node-type="Paragraph" style="margin-bottom: 5.333vw; text-indent: unset; overflow-wrap: break-word; content: "viewport-units-buggyfill; margin: 0 0 5.333vw"; font-size: 1.125rem; line-height: 1.9125rem;"><br></h3></div> <div class="hugo-align-justify" data-node-type="BlockFormat" style="color: rgb(51, 51, 51); font-family: FZYaSongS-R-GB, FZYaSong-M-GBK, "PingFang SC", miui, system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(250, 251, 252);"><p data-node-type="Paragraph" style="margin-bottom: 5.333vw; text-indent: unset; overflow-wrap: break-word; content: "viewport-units-buggyfill; margin: 0 0 5.333vw"; font-size: 1.125rem; line-height: 1.9125rem;"><span style="font-size: 1.125rem; text-indent: unset;">震旦角石一頭尖，一頭寬，硬殼表面發(fā)育有二、三十節(jié)環(huán)狀紋圈以及豎紋，把它倒置，就像一座寶塔，也很像竹筍。所以它被人們賦予了很多別名，比如“寶塔石”“竹筍石”等。因?yàn)橛兄利惖耐獗?，震旦角石還被人們賦予了美好的寓意，人們認(rèn)為它能夠聚財(cái)、節(jié)節(jié)高升，是鎮(zhèn)宅驅(qū)邪的寶物，廣受大家的喜愛。</span></h3></div>