【最新情報】エディアカラ生物群の不思議な生き物たちの謎

この記事を書いた人

もふもふ
もふもふしたものをこよなく愛しているブロガーです。物理屋、研究開発者、不動産投資家、コンサルタント、経営者、Youtuber。やりたいと思ったことを思いっきり全力でやっています。



古代の謎が大好きなもふです。

エディアカラ紀というのをご存知でしょうか?カンブリア紀の前の時代のことで、初めていろんな生物が誕生した時代だといわれています。

エディアカラン(Ediacaran period、エディアカラ紀)とは、地質時代の区分の1つである。新原生代クライオジェニアンの終わりから古生代カンブリア紀の始まりまでの約6億2000万年前〜約5億4200万年前である。原生代の最後の区分である。2004年に国際地質科学連合(IUGS)が、先カンブリア時代層序小委員会の勧告に基づきその基底 (Enorama Creek GSSP) を公式に批准した。
wikipediaより-

 

この時代の生き物の特徴として、

エディアカラ生物群の特徴
  • 左右非対称になっている
  • 放射線状の生物が多い
  • やわらかい組織でできている

など、この時代ならではの特徴を持っています。

この記事では、エディアカラ生物群の最新の研究結果を報告していきます。

エディアカラ生物群や、カンブリア紀の生物に興味がある方は、この本を強くお勧めします!かなり面白く専門的な本としては超おすすめです!

 

エディアカラ群の生物の紹介

 

参考:エディアカラ生物群(研究者が作ったページ?)
参考:ハンター日記(スノーボールアースからの歴史が詳しいです)

2018年9月21日 謎の古代生物は動物と判明

Dickinsoniaの化石画像。謎の生き物で動物なのかどうか、長年議論が行われてきた。

ナショナルジオグラフィックから、面白い記事が出ました。

ディッキンソニア(Dickinsonia)は動物だったと判明したそうです。

ディッキンソニア(Dickinsonia)はエディアカラ生物群のなかでも特に有名で、平べったい楕円形をしている。直径は120センチ以上になり、全体に細かい溝があり、真ん中に1本の隆起が走っている。科学者たちは長年、ディッキンソニアをあらゆる「界(生物のグループ)」に分類してきたが、この数十年間は、菌類、原生生物、動物という3つの説が有力だった。

9月21日付け学術誌『サイエンス』に発表された研究によると、新たな手法で古代の生物を調べた結果、これまで積み上げられてきた知見と考え合わせて、ディッキンソニアが地球最古の動物の1つであることが明らかになった。5億4100万年前に生物の種類が爆発的に増加した「カンブリア爆発」よりも前の話である。

論文著者であるオーストラリア国立大学の古生物地球化学者ヨッヘン・ブロックス氏は、「彼らはもう私たちの仲間、動物だったのです」と語る。ディッキンソニアはその後絶滅してしまったが、彼らをはじめとする当時の多様な多細胞生物の中から、今日まで続くさまざまな動物が生じてきた。

「ディッキンソニアの謎については、これで決着したと思います」と、米カリフォルニア大学リバーサイド校の古生物学者メアリー・ドローザー氏は言う。氏は今回の研究には関与していない。

ブロック氏は、「化石と周囲の海底の分子組成は、はっきりと違っていました」と言う。古代生物の痕跡に含まれるコレステロールの豊富さ(最大93%)は、これが動物であることを示唆していた。これに対して、周囲の海底にはコレステロールはほとんど含まれておらず、代わりにエルゴステロイドという物質を含んでいたことから、緑藻の存在が示唆された 。

 

1,448 件のコメント

  • I wanted to send you the very little remark to finally thank you the moment again over the remarkable tactics you have shared on this page. This has been simply surprisingly open-handed with you to offer unhampered what most of us would’ve offered for sale for an ebook to help make some money on their own, precisely seeing that you might have tried it in case you desired. Those suggestions in addition worked to become good way to realize that some people have the identical keenness similar to my personal own to realize significantly more when it comes to this matter. I believe there are several more pleasant sessions up front for people who scan your site.

  • My husband and i ended up being contented Chris could carry out his basic research by way of the ideas he came across from your own blog. It’s not at all simplistic just to always be giving away guidelines many others could have been making money from. And now we consider we’ve got the blog owner to appreciate because of that. All the explanations you’ve made, the easy blog menu, the friendships you aid to create – it’s all astounding, and it’s aiding our son and our family consider that that concept is awesome, and that’s exceptionally essential. Many thanks for all!

  • Greate pieces. Keep writing such kind of info on your page.
    Im really impressed by your blog.
    Hi there, You have done an excellent job. I will definitely digg it
    and in my opinion recommend to my friends. I’m sure they’ll be benefited from this web site.

  • Bisa buat ide tulisan ya dibuat request gini mas. Kalau kayak aku yg suka bingung mau nulis apa lagi. Tapi kalau mas Anton Lo kayaknya idenya ngalir terus perasaan. Meleng dikit artikel barunya wes sak ndayak wkwk Hulda Cesaro Brian

  • Woah! I’m really enjoying the template/theme of this blog.
    It’s simple, yet effective. A lot of times it’s challenging to get that “perfect balance” between usability and appearance.
    I must say you’ve done a great job with this.
    Additionally, the blog loads very fast for me on Opera.
    Excellent Blog!

  • Achieving your fitness goal does not need a certified personal trainer or an expensive gym memberships, especially if you have the budget and the space to consider practically every workout machine on the market. Gretel Leonid Rosenbaum

  • Now that it is Christmas time, I am looking up your gluten free christmas baking recipes i.e. the gingerbread cookies, allergy free holiday recipes etc. pumpkin pie; How about setting up a category for HOLIDAY? In fact, the gingerbread cookies could also be in your gift ideas. Keep up the good work. Lexy Chalmers Perretta

  • Hey there! I just want to give you a huge thumbs up for your great info you have got here on this post. I will be returning to your web site for more soon. Merl Leopold Meredeth

  • Having read this I believed it was extremely informative. I appreciate you finding the time and effort to put this short article together. I once again find myself spending a lot of time both reading and leaving comments. But so what, it was still worthwhile! Gillian Derek Turnbull

  • I blog often and I truly appreciate your information. The article has really peaked my interest. I am going to book mark your website and keep checking for new details about once per week. I subscribed to your RSS feed as well. Jenn Barde Genevra

  • Heya i am for the first time here. I found this board and I find It truly useful & it helped me out a lot. I hope to give something back and aid others like you aided me. Enrichetta Anatollo Anstus

  • I must show my appreciation for your kind-heartedness giving support to visitors who really need help with this area. Your special commitment to getting the message throughout appears to be extremely effective and have in every case enabled guys and women just like me to achieve their goals. Your amazing warm and helpful publication indicates a whole lot to me and especially to my office colleagues. Thanks a ton; from everyone of us. Janette Ali Zales

  • I blog often and I really thank you for your information. The article has truly peaked my interest. I am going to bookmark your blog and keep checking for new details about once a week. I opted in for your RSS feed as well. Milka Westley Helve

  • After looking over a handful of the blog articles on your website, I honestly appreciate your technique of writing a blog. I bookmarked it to my bookmark website list and will be checking back in the near future. Take a look at my website as well and tell me your opinion. Frank Maddie Lorenzo

  • Good for you for getting back on track, I am always up for using an excuse! Starting back up is what is important!And thanks for stopping by my blog the other day and offering encouraging words! Bonnie Raymund Rube

  • After research a couple of of the weblog posts in your web site now, and I actually like your method of blogging. I bookmarked it to my bookmark website list and shall be checking back soon. Pls check out my site as nicely and let me know what you think. Jessica Del Annabel

  • Cpp and oas at 69 or 70. Spending down some business dividends and stock dividends to try to get the best out of CPP at later date. Have the original book but would like the update. Cheers Freda Agustin Haeckel

  • Hey, how are you doing?

    I’m 23, from Algorat and i’m just starting my online loot making journey.
    I kill in intrigue b passion with making money online after discovering the hypebeast clothing and shoes resell demand in 2018. I started buying things i liked and selling them used for the nevertheless evaluation i bought it and from there i started wisdom about reselling.Then youtube started recommending dropshipping and affiliate marketing videos and i got a sales m‚tier at a big retailer here in Portugal and my passion merely grew wings.

    I well-founded started my opening dropshipping transaction in January and i’m planning to construct a brand name overtime. Optimistically ended the progress of this year i can moulder it into a productive brand.
    I’m also selling trendy products on ebay on the side like ring lights, because in my thought this products are too saturated to bod a website around but can undisturbed get some small profits that i can ordain on the actual business I require to swell, without spending my savings.

    I contemplation about doing automated youtube channels too, but haven’t done in understanding fact-finding yet…

    My foremost convergence at present is dropshipping because it’s what i’ve been studying more in the mould link of months. but i’m unsigned to any indication, entertain cut in the comments if you call to mind a consider other fields are worth to examine, as i’m modish and don’t have a collection of insight encircling everything.

    I demand to learn and develop my skills and i want to steal you develop too, so if you’re a mentor or justified wish you had a new zealand mate that you could piece all your marketing adventures with, like i do, content smash hit me up! In the end, it’s all about networking and connecting with each other, so receive’s do it!

  • Incredible update of captcha solving package “XEvil 5.0”:

    Captcha breaking of Google (ReCaptcha-2 and ReCaptcha-3), Facebook, BitFinex, Bing, Mail.Ru, SolveMedia, Hydra,
    and more than 12000 another size-types of captchas,
    with highest precision (80..100%) and highest speed (100 img per second).
    You can use XEvil 5.0 with any most popular SEO/SMM programms: iMacros, XRumer, SERP Parser, GSA SER, RankerX, ZennoPoster, Scrapebox, Senuke, FaucetCollector and more than 100 of other programms.

    Interested? You can find a lot of demo videos about XEvil in YouTube.

    FREE DEMO AVAILABLE!

    See you later 😉
    P.S. A Huge Discount -30% for XEvil full version until 15 Jan is AVAILABLE! 🙂

    XEvil Net