is"sealed"inamberflower.is"sealed"inamberflower.biologistsannouncedthattheyfoundakindofextinctplantsplantsfromheavyamberformed15millionyearsago,http://xfpa.xf.cn/guestbook.asp,thisfindingisbasedontwostrainsof"seals"inamberflower.TheresearcherscallitStrychnoselectri.ExpertstendtothinkofaasStrychnos,http://www.mctw54.org/E_GuestBook.asp,butalsoinlinewiththecharacteristicsoftheattributepartofchrysanthemumplants.TheresultsofthisstudyhavebeenpublishedinthejournalNaturebotany.IntactplantsofthegenusStrychnosgeneralinthegenusoftropical,shrubs,treesandvinescontaindeadlytoxicstrychnine.ResearchersintheUnitedStatesinGreek"amber"wasfoundintheamberinbotanicalnomenclature.Amberisthefossilizedresinfromdeadtrees.1986,ProfessorGeorgeoftheOregonStateUniversityintheUnitedStatesconductedafieldsurvey,found500fossils,containingextinctplantsinthefossilofthetwoflowersinwhich.IsthatIranprofessorisafamousentomologist,mostofthesefossilsarefossilinsects.Itisinterestingthat,fromthediscoveryofthesefossils,ProfessorYispentnearly30yearsinthestudyoffossilinsects,andthenfocusontheflower.generally,theplantfossilsfoundinamberarefragments.Butthetwoflowers,,areunusuallyintact.In2015,itwillbequiteIransomehighpixelphotototheRutgersUniversityprofessorLina,ChuWei?."Theseflowerslookliketheyjustfelloffthetree."TheprofessorisYisaid:"Ithinktheymaybestrychnos.IwillsendphotosofLina,becausesheisanexpertinStrychnos."maybetoxic,ProfessorChuWeitotheplantfossilsfoundincomparisonwiththecurrentlyknown200studmoneygenus,comparetheirphysiologicalstructure.Tothisend,shecombedacollectionofmuseumsandgalleries."afactordefinedloganiaspeciesmostcommonlyusedistheshapeoftheflower.Weareveryluckythattheflowersinthefossilformarecomplete.""Ilookedatthespecimensofeachspeciesinthenewworld,tookandmeasuredthem,andcomparedthemwiththephotosGeorgesentme.Iaskedmyself,"whatisthefluffonthepetals?Wheredothesehairsgrow?"forlateCretaceousanimals,theplantmaynotbesuitableforfood."Alltheplantsarealmosttoxicstrychnos.""Everyplantinthisgenuscontainsdifferentalkaloids"　　被“封印”在琥珀中的花朵。　　被“封印”在琥珀中的花朵。　　生物学家宣布，他们从1500万年前形成的厚重琥珀中发现了一种已灭绝植物的植株，这项发现的基础是两株“封印”在琥珀中的花朵。研究者将其称为Strychnoselectri。专家倾向于认为其为马钱属植物的一种,http://www.bjfshfe.com/E_GuestBook.asp，但其部分特征也符合菊类植物的属性。这项研究成果已经发表在《自然植物学》期刊上。　　完好如初　　马钱属植物一般生在热带，该属的灌木、树和藤类都含有致命的剧毒马钱子碱。美国研究者以希腊文“琥珀”为这种在琥珀中发现的植物命名,http://www.qshzxx.com.cn/wygkcn_GuestBook.asp。琥珀是树脂形成的化石，来自死去已久的树木。　　1986年，美国俄勒冈州立大学教授乔治?颇伊那进行过一项田野调查，发现了500块化石,http://www.jmhaishen.com/E_GuestBook.asp，含有灭绝植物的两朵花的化石就在其中。颇伊那教授是一位著名的昆虫学家，这批化石大多数都是昆虫化石。有意思的是，从发掘这批化石开始，颇伊那教授花了近30年的时间研究化石里的昆虫，然后才将注意力放到花朵上,[url=http://www.wsxiu.net/forum.php?mod=viewthread