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ฟอสซิลพืชปะการัง (Heliophyllum) - จำหน่อยแล้ว!

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ฟอสซิลปะการัง Heliophyllum The rocks in southwestern Pennsylvania contain a wide variety of invertebrate, vertebrate, plant, and trace fossils. The following is a systematic overview of the types of f
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รายละเอียดสินค้า ฟอสซิลพืชปะการัง (Heliophyllum) - จำหน่อยแล้ว!

ฟอสซิลปะการัง Heliophyllum The rocks in southwestern Pennsylvania contain a wide variety of invertebrate, vertebrate, plant, and trace fossils. The following is a systematic overview of the types of fossils that may be found. It is by no means meant to be inclusive. The origins of the Anthozoa lie in the Precambrian, but concrete evidence is sketchy. A number of the Vendian, or latest Precambrian, soft-bodied "medusoids" are now thought to represent benthic polyp-like organisms. Some of the frondlike fossils of the time could represent colonial anthozoans similar to living "sea pens," Eoporpita is one such Vendian fossil that could be a single anthozoan polyp, and Charnia is a frondlike fossil that in the past has been linked with "sea pens" or soft corals. However, this issue has not been resolved to everyone's satisfaction, although some well-preserved frondlike fossils of the genus Charniodiscus from Australia may show spicules and individual polyps (Jenkins 1989). In any case, there is molecular evidence to suggest that the Anthozoa are the earliest branch of the phylum Cnidaria (Bridge et al. 1992). Invertebrate Fossils Phylum Cnideria (corals): Only one genus of coral is found in the marine rocks in southwestern Pennsylvania: Figure from Moore and others. Corals : Heliophyllum Age : Devonian 300 - 400 Million Years Ago พบได้โดยทั่วไป เป็นอาหารของสัตว์กินพืช *รับประกันความแท้ 100% สนใจติดต่อสอบถามเพิ่มเติมได้ที่ K. Siriphong P. Tel : 09-1411002