{"id":7266,"date":"2021-01-09T11:41:08","date_gmt":"2021-01-09T16:41:08","guid":{"rendered":"https:\/\/alanskeoch.ca\/?p=7266"},"modified":"2021-01-09T11:42:01","modified_gmt":"2021-01-09T16:42:01","slug":"episode-220-yukon-diary-6-the-big-tooth","status":"publish","type":"post","link":"https:\/\/alanskeoch.ca\/?p=7266","title":{"rendered":"EPISODE 220    YUKON DIARY  6     THE  BIG TOOTH"},"content":{"rendered":"<div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">EPISODE 220 &nbsp; &nbsp;YUKON DIARY &nbsp;STORY &nbsp;6 &nbsp; THE BIG TOOTH<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">alan skeoch<\/div>\n<div class=\"\">Jan. 2021<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><img decoding=\"async\" apple-inline=\"yes\" id=\"CAF3EFB0-AD52-44E8-97D3-74D228ACB7E5\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/UNADJUSTEDNONRAW_thumb_9d8c9.jpg\" class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">This &nbsp;is &nbsp;Jack Acheson. &nbsp;Every summer he came to Dublin Gulch, YUKON, &nbsp;and found treasures of various kinds. &nbsp;He gave me one of his treasures\u2026perhaps<\/div>\n<div class=\"\">because we both wore similar work clothes.<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><img decoding=\"async\" id=\"img\" apple-inline=\"yes\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/Mammoth-786330.jpg\" class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">This is a hairy &nbsp;Mammoth, related to elephants distantly. &nbsp;Once upon a time 10,000 years ago they&nbsp;<\/div>\n<div class=\"\">wandered across &nbsp;the Yukon after crossing the Bering land bridge from Asia. &nbsp; Once &nbsp;here some of them<\/div>\n<div class=\"\">met North America\u2019s Mastodons who look similar. &nbsp; Both of these creatures were common residents<\/div>\n<div class=\"\">of &nbsp;North America until &nbsp;killed by human predators. &nbsp;They had &nbsp;big teeth. &nbsp;Huge tusks. &nbsp;Jack finds<\/div>\n<div class=\"\">them every year in Dublin Gulch, at least he did in the 1960\u2019s.<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">\u201cHow would you like this \u2026 a gift\u201d, said Jack &nbsp;Acheson as he leaned against his Cat D6 in Dublin Gulch.<\/div>\n<div class=\"\">\u201cWhat is it?\u201d<\/div>\n<div class=\"\">And he handed me a rock about the size of large can of fruit salad\u2026no, bigger than that.<\/div>\n<div class=\"\">\u201cTake a guess\u201d<\/div>\n<div class=\"\">\u201c A big chunk &nbsp;of galena\u2026sort of shiny\u2026raw &nbsp;silver and lead\u2026heavy.\u201d<\/div>\n<div class=\"\">\u201cWrong.\u201d<\/div>\n<div class=\"\">\u201cCertainly not gold.\u201d<\/div>\n<div class=\"\">\u201cLook at the layers\u2026clue to what it is.\u201d<\/div>\n<div class=\"\">\u201cHard\u2026looks like a stone layer cake\u2026 sidewise&#8230;many layers.\u201d<\/div>\n<div class=\"\">\u201cWrong again.\u201d<\/div>\n<div class=\"\">\u201cWhere &nbsp;did you get it?\u201d<\/div>\n<div class=\"\">\u201cFound it right here in Dublin Gulch\u2026found a bunch of them<\/div>\n<div class=\"\">and other weird stuff\u2026more every year it seems.\u201d<\/div>\n<div class=\"\">&#8220;I Give up. What is it\u201d<\/div>\n<div class=\"\">\u201cThe tooth of a Hairy Mammoth\u2026a molar tooth\u201d<\/div>\n<div class=\"\">\u201cIt is incredible\u2026huge tooth.\u201d<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><img decoding=\"async\" id=\"img\" style=\"width: 1024px; height: 576px;\" apple-inline=\"yes\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/mammoth-tooth-2-Inn-at-Honey-Run-1024x576-1.jpg\" class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">\u201cWe find lots of Mammoth teeth\u2026tusks,..bones\u2026right here in Dublin Gulch.\u201d<\/div>\n<div class=\"\">\u201cI noticed those long curved things leaning against your cabin\u2026\u201d<\/div>\n<div class=\"\">\u201cThose are the tusks.\u201d<\/div>\n<div class=\"\">\u201cWhat do you do with them?\u201d<\/div>\n<div class=\"\">\u201cGovernment people from Whitehorse come and get them.\u201d<\/div>\n<div class=\"\">\u201cHow old are they?\u201d<\/div>\n<div class=\"\">\u201c10,000 to 12, 000 years old\u2026ancient\u201d<\/div>\n<div class=\"\">\u201cThere were mammoths &nbsp;here in the Yukon?\u201d<\/div>\n<div class=\"\">\u201cLots of them I think\u2026herds\u2026whatever term is applied to a bunch of mammoths.\u201d<\/div>\n<div class=\"\">\u201cComplete skeletons?\u201d<\/div>\n<div class=\"\">\u201cNo\u2026we find piles &nbsp;of bones\u2026sometimes single tusks\u2026sometimes&nbsp;<\/div>\n<div class=\"\">just a tooth like this one I\u2019m giving you.\u201d<\/div>\n<div class=\"\">\u201cHow &nbsp;come the bones are all mixed up\u2026.spread around.\u201d<\/div>\n<div class=\"\">\u201cWater \u2026 flood \u2026 there once was a big glacial river here in the McQueen Valley.\u201d<\/div>\n<div class=\"\">\u201cIce?\u201d<\/div>\n<div class=\"\">\u201cYes, glacial ice swept down this valley as well\u2026ripped the hills apart. &nbsp;You had<\/div>\n<div class=\"\">lunch &nbsp;up on Keno Hill I hear\u2026you sat on the edge of &nbsp;a hanging valley<\/div>\n<div class=\"\">where the ice &nbsp;had ripped a great slab of rock\u2026cleaved it.\u201d<\/div>\n<div class=\"\">\u201cPossible the carcasses of those Mammoths got ground up and the hard<\/div>\n<div class=\"\">parts &nbsp;like teeth and tusks were piled in the sediment.\u201d<\/div>\n<div class=\"\">\u201cAnd you are giving this tooth to me?\u201d<\/div>\n<div class=\"\">\u201cYou are more interested than many.\u201d<\/div>\n<div class=\"\">\u201cAre you sure this is a Mammoth tooth and not a &nbsp;Mastodon &nbsp;tooth?\u201d<\/div>\n<div class=\"\">\u201cAbsolutely. &nbsp;Teeth are the easiest way to tell the difference. &nbsp;This mammoth<\/div>\n<div class=\"\">is &nbsp;like a layer cake. &nbsp; A &nbsp;mastodon tooth on the other hand &nbsp;looks like our<\/div>\n<div class=\"\">teeth\u2026solid with bumps for grinding. &nbsp; Both kinds &nbsp;of teeth were for grinding<\/div>\n<div class=\"\">but mastodons ground up bigger branches while the mammoths were more<\/div>\n<div class=\"\">ground feeders. &nbsp;The guys from Whitehorse told me that.\u201d<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><img decoding=\"async\" alt=\"\" class=\"\" id=\"yui_3_5_1_1_1610205856908_1225\" apple-inline=\"yes\" style=\"margin-top: 0px; margin-left: 0px;\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/th.jpeg\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">\u201cThanks &nbsp;Jack\u2026wonderful thing to have\u2026.\u201d<\/div>\n<div class=\"\">\u201cMammoth would have to lose this &nbsp;tooth somehow. &nbsp;Mammoths only had two sets<\/div>\n<div class=\"\">fo teeth. Once they were worn down the mammoths starved to death.\u201d<\/div>\n<div class=\"\">\u201cSame could &nbsp;happen to us if there\u2019re no dentists around.\u201d<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">That is how I got a treasure from the Yukon. &nbsp;My very own Mammoth tooth.<\/div>\n<div class=\"\">Gave it a special place in my rucksack &nbsp;when the Yukon job was over. &nbsp;A year<\/div>\n<div class=\"\">later, in the fall of 1963, I &nbsp;was hired &nbsp;as a history teacher at Parkdale Collegiate<\/div>\n<div class=\"\">Institute, west end of Toronto. &nbsp;The tooth was a great teaching tool in that<\/div>\n<div class=\"\">first year of teaching. &nbsp; Not long. &nbsp;Sometime in the following year I went<\/div>\n<div class=\"\">to get my mammoth tooth and it was gone.<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">Some student stole my mammoth tooth! &nbsp;Or maybe it was one of my<\/div>\n<div class=\"\">fellow staff members. &nbsp;Or maybe &nbsp;one of the caretakers thought it<\/div>\n<div class=\"\">was &nbsp;garbage. &nbsp; Most likely a kid. &nbsp;I should have put the tooth in a<\/div>\n<div class=\"\">safe place.<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">Now here is a question for you to think about. &nbsp;WHAT WAS JACK ACHESON<\/div>\n<div class=\"\">DOING &nbsp;IN &nbsp;THE YUKON IN 1962? &nbsp;The answer may be<\/div>\n<div class=\"\">obvious for most of you. &nbsp; The next Episode 221 will provide an<\/div>\n<div class=\"\">interesting answer&#8230; even if you guessed correctly.<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><img decoding=\"async\" alt=\"\" style=\"margin-top: 0px; margin-left: 0px;\" class=\"\" id=\"yui_3_5_1_1_1610206206785_1858\" apple-inline=\"yes\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/th-1.jpeg\"><img decoding=\"async\" id=\"img\" apple-inline=\"yes\" style=\"width: 800px; height: 532px;\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/12-podgotovka-k-transportirovke-najdennogo-bivnja-mamonta_full.jpg\" class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><img decoding=\"async\" apple-inline=\"yes\" id=\"ADC916D9-9D5A-4DF3-BE45-DD56A34A642D\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/UNADJUSTEDNONRAW_thumb_9d05f-1.jpg\" class=\"\"><\/div>\n<div class=\"\">Bill Dunn and &nbsp;I did &nbsp;not see any mammoths when we cooked &nbsp;our lunch &nbsp;beside a cliff that hung over this valley. &nbsp;We did not even know<\/div>\n<div class=\"\">those huge creatures once wandered around here\u2026did not know until i met Jack Acheson. &nbsp; And got my mammoth tooth. &nbsp;Not sure<\/div>\n<div class=\"\">who has &nbsp;that tooth now.<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">alan skeoch<\/div>\n<div class=\"\">January 2021<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">POST SCRIPT: &nbsp;MAMMOTHS AND &nbsp;MASTODONS<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<div class=\"\">\n<div class=\"art-right fr\" style=\"float: right; width: 300px; margin-left: 20px; font-family: museo_sans_cond; letter-spacing: 0.10000000149011612px;\">\n<div class=\"fl posrel main-image mgbot_30\" id=\"art-img-small\" style=\"position: relative; width: 300px; height: 199px; float: left !important; margin-bottom: 30px !important;\"><a id=\"main_image_small\" class=\"opener posrel hp_news_gr_2\" href=\"https:\/\/news-cdn.softpedia.com\/images\/news2\/Elephant-Mammoth-Evolution-Explains-Human-Evolution-2.jpg\" title=\"Open photo gallery\" target=\"_blank\" itemprop=\"image\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/ImageObject\" style=\"cursor: pointer; color: rgb(0, 40, 115); text-decoration: none; position: relative; display: block;\" rel=\"noopener\"><img decoding=\"async\" alt=\"The analysis of a mastodon tooth explains further how climate changes in Africa provoked the divergence of humans, chimps and gorillas. Loxodonta=African elephant; Elephas=Asian elephant; Mammuthus=mammoth; Mammut=mastodon\" title=\"The analysis of a mastodon tooth explains further how climate changes in Africa provoked the divergence of humans, chimps and gorillas. Loxodonta=African elephant; Elephas=Asian elephant; Mammuthus=mammoth; Mammut=mastodon\" data-description=\"N Rohland et al.\" itemprop=\"thumbnailUrl\" style=\"border: 0px; vertical-align: top; border-top-left-radius: 6px; border-top-right-radius: 6px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px;\" apple-inline=\"yes\" id=\"4533DCF2-B139-42E4-B366-7E5FD2711552\" src=\"https:\/\/alanskeoch.ca\/wp-content\/uploads\/2021\/01\/Elephant-Mammoth-Evolution-Explains-Human-Evolution.jpg\" class=\"\"><\/a><\/p>\n<div class=\"ellip opener art-img-desc nosel\" title=\"The analysis of a mastodon tooth explains further how climate changes in Africa provoked the divergence of humans, chimps and gorillas. Loxodonta=African elephant; Elephas=Asian elephant; Mammuthus=mammoth; Mammut=mastodon\" style=\"-webkit-user-select: none; cursor: pointer; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; height: 40px; width: 300px; line-height: 42px; color: rgb(242, 244, 248); background-color: rgb(51, 81, 143); border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 6px; border-bottom-left-radius: 6px;\"><span class=\"fa mgleft_10 fa-search-plus\" style=\"display: inline-block; font-family: FontAwesome; line-height: 17px; -webkit-font-smoothing: antialiased; margin-left: 10px !important;\"><\/span>&nbsp;&nbsp; The analysis of a mastodon tooth explains further how climate changes in Africa provoked the divergence of humans, chimps and gorillas. Loxodonta=African elephant; Elephas=Asian elephant; Mammuthus=mammoth; Mammut=mastodon<\/div>\n<\/div>\n<div class=\"ad-300x250 adwblue fl ad mgbot_20\" id=\"_wlts\" data-cty=\"CA\" style=\"z-index: 999; vertical-align: top; width: 300px; height: 250px; float: left !important; margin-bottom: 20px !important; position: relative; background-color: rgb(230, 233, 241);\">\n<div id=\"Softpedia___news_page__placement_5ff9d89d63907__\" data-google-query-id=\"CIim-Myhj-4CFVJd1QodTRwNFw\" style=\"width: 300px; height: auto;\" class=\"\">\n<div id=\"google_ads_iframe_\/1004334\/Softpedia\/news_page_1__container__\" style=\"border: 0pt none; margin: auto; text-align: center;\" class=\"\"><iframe id=\"google_ads_iframe_\/1004334\/Softpedia\/news_page_1\" title=\"3rd party ad content\" name=\"google_ads_iframe_\/1004334\/Softpedia\/news_page_1\" width=\"300\" height=\"250\" scrolling=\"no\" marginwidth=\"0\" marginheight=\"0\" frameborder=\"0\" sandbox=\"allow-forms allow-popups allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation\" data-google-container-id=\"2\" data-load-complete=\"true\" style=\"border-width: 0px; vertical-align: bottom;\" class=\"\"><\/iframe><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"body\" id=\"newsbody\" style=\"line-height: 24px; font-family: museo_sans; letter-spacing: -0.1px; padding-bottom: 0px !important;\">\n<article itemprop=\"articleBody\" class=\"\">\n<p class=\"mgbot_20\" style=\"padding: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 20px !important; margin-left: 0px;\">Humans and elephants evolved in the same African dry savanna. That&#8217;s why elephant fossils offer a clue on the type of environment in which our ancestors lived. An analysis of DNA painstakingly retrieved from an ancient mastodon tooth has further pushed back the time when mammoths split off from elephants. It appears that the mammoths and Asian elephants split about 5.8 to 7.7 million years ago when humans and apes could have shared a common ancestor.<\/p>\n<p class=\"mgbot_20\" style=\"padding: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 20px !important; margin-left: 0px;\">It appears that environmental changes at the time caused a massive period of speciation (species formation) in Africa. &#8220;Until recently, scientists believed that humans and chimps last shared a common ancestor about 5 million years ago. But fossil studies and genetic discoveries in recent years have pushed this date back by at least 1 million years.&#8221; said Paul Matheus at the University of Alaska in Fairbanks, US.<\/p>\n<p class=\"mgbot_20\" style=\"padding: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 20px !important; margin-left: 0px;\">Now, Matheus team employs a mastodon tooth recovered in Alaska to revise the evolutionary history of mammoths and elephants, previously believed to have diverged from each other about 5 million years ago. Mastodons are elephant related animals, with elephant-like build, but with straighter tusks, longer body, longer head, shorter limbs and more primitive teeth. Fossil data showed that mastodons split from elephants about 24 million to 28 million years ago.<\/p>\n<p class=\"mgbot_20\" style=\"padding: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 20px !important; margin-left: 0px;\">The Alaskan mastodon tooth was estimated to be 50,000 to 130,000 years old. The mastodon DNA was extracted from 30 grams of ground tooth. They sequenced the whole mitochondrial DNA of the mastodon, about 16,000 pairs of nucleotid pairs. They were compared with similar DNA sequences from African elephants, Asian elephants and mammoths (mammoths were just hairy species of elephants).<\/p>\n<p class=\"mgbot_20\" style=\"padding: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 20px !important; margin-left: 0px;\">As the fossils showed mastodons split off from elephants about 26 million years ago, the researchers could calculate the rhythm of mutation accumulations in time, called the evolutionary clock.&nbsp;<\/p>\n<\/article>\n<\/div>\n<\/div>\n<div class=\"\"><br class=\"\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>EPISODE 220 &nbsp; &nbsp;YUKON DIARY &nbsp;STORY &nbsp;6 &nbsp; THE BIG TOOTH alan skeoch Jan. 2021 This &nbsp;is &nbsp;Jack Acheson. &nbsp;Every summer he came to Dublin Gulch, YUKON, &nbsp;and found treasures of various kinds. &nbsp;He gave me one of his treasures\u2026perhaps because we both wore similar work clothes. This is a hairy &nbsp;Mammoth, related to elephants [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7266","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=\/wp\/v2\/posts\/7266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7266"}],"version-history":[{"count":0,"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=\/wp\/v2\/posts\/7266\/revisions"}],"wp:attachment":[{"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/alanskeoch.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}