Fish don’t exist. In her novel “Why Fish Don’t Exist,” Lulu Miller points out that a true “fish” clade containing an ancestor ...

A phylogeny is a hypothetical reconstruction ... Phylogenies are often represented graphically in the form of a 'tree' and enable scientists to find new relationships between organisms.

An AI model trained on nearly one million bacterial genomes can predict when and where antibiotic resistance genes are likely ...

An ancient and enormous organism called Prototaxites, initially found to be a type of fungus, may actually be an unknown ...

President Donald Trump announced plans to chop down a tree that was said to have been planted by President Andrew Jackson. In a Truth Social post on Sunday, Trump said that he was working with ...

The White House will remove from its property a magnolia tree planted nearly 200 years ago with seeds said to have been brought from former President Jackson’s home in Tennessee. President Trump ...

3.6亿年前、4亿年前、3.5亿年前、3亿6000年前、3亿多年前……这些年限不仅和笔筒树对应了起来，也和侏罗纪对应了起来，甚至有的还对应在了白垩纪上面。

野鸟是禽流感病毒的自然宿主和储存库，在禽流感病毒的进化与传播中发挥着关键作用。浙江省动物疫病预防控制中心团队于2024年6月在中国东部的野鸟组织样本中分离到了一株新型H5N6高致病性禽流感病毒，A/wild ...

Beyond Journey's End with its fantastical world and, of course, the elf mage herself, you'll love these similar picks.

It's been five years since COVID-19 was declared a global pandemic. As SARS-CoV-2 shifts to endemic status, questions about ...

A phylogenetic tree of SARS-CoV-2 sequences, built with Nextstrain, displays sequences colored by their clade and organized by collection date. Over time, sequences mutate and diverge, forming new ...

桫椤科 （Cyatheaceae）的确在侏罗纪就出现了，不过时间是2.01亿~1.45亿年前[1] [2]。 笔筒树（Cyathea lepifera）属于桫椤科白桫椤属植物，而整个白桫椤属出现在9000万年前，白垩纪时代[3] [4]。