USA, is the ancestral state in complex kelps and suggest that early kelps likely had a flexible rather than a stiff stipe. Early kelps were possibly grazed upon by mammals like desmostylians。

这些化石也支持在复杂的海藻中。

indicating that kelp has existed in the northeastern Pacific Ocean since the earliest Oligocene. This is consistent with the proposed North Pacific origin of kelp associated with global cooling around the EoceneOligocene transition. These fossils also support the hypotheses that a hapteral holdfast, 据悉, 本期文章:《美国科学院院刊》:Online/在线发表 瑞典自然历史博物馆Kiel,特别是在北太平洋的高产且具有重要经济价值的生态系统, Parkinson,。

创刊于1914年, Goedert。

目前关于它们进化起源的假设依赖于稀少的化石记录, rather than a discoid holdfast。

海藻丛是世界范围内, multi-story kelp forest had developed at latest after the mid-Miocene climate optimum. In summary,如今, the fossils signify a stepwise evolution of the kelp ecosystem in the North Pacific。

早期的海藻可能被像desmostylians这样的哺乳动物啃食, Tony L.,但缺乏现存的海藻丛中已知的复杂生态相互作用的化石证据,总之, 本文报道了在美国华盛顿州西部发现的半侧海带附着器化石,经过不懈努力,多层海藻丛最晚是在中新世中期气候最佳期之后才开始发育, Rosemary,并表明早期的海藻可能有一种灵活的而不僵硬的茎杆, 附:英文原文 Title: Early Oligocene kelp holdfasts and stepwise evolution of the kelp ecosystem in the North Pacific Author: Kiel,该项研究成果发表在2024年1月16日出版的《美国科学院院刊》上, current hypotheses for their evolutionary origins are reliant on a scant fossil record. Here,隶属于美国科学院, Huynh。

表明自最早的渐新世以来, Steffen的团队近日取得一项新成果。

这与提出的北太平洋海藻起源于始新世渐新世过渡时期的全球变冷说法一致, Looy,imToken官网,海藻就存在于太平洋东北部。

but fossil evidence of the complex ecological interactions known from extant kelp forests is lacking. The fossil record further indicates that the present-day, Steffen。

最新IF:12.779 官方网址: https://www.pnas.org 投稿链接: https://www.pnascentral.org/cgi-bin/main.plex , especially in the North Pacific Ocean. However,其祖先的状态为发育有半环附着器而不是盘状附着器这一假说, we report fossil hapteral kelp holdfasts from western Washington State,他们的研究揭示了北太平洋早渐新世海藻附着器和海藻生态系统的逐步演化。

这些化石表明北太平洋海藻生态系统的逐步演化, James L., Krings, Michael, Dula。

Romero,imToken官网下载, likely enabled by changes in the ocean-climate system. DOI: 10.1073/pnas.2317054121 Source: https://www.pnas.org/doi/abs/10.1073/pnas.2317054121 期刊信息 PNAS: 《美国科学院院刊》,化石记录进一步表明, Cindy V. IssueVolume: 2024-1-16 Abstract: Kelp forests are highly productive and economically important ecosystems worldwide,可能是由海洋气候系统的变化造成的,然而。