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- W3129374706 endingPage "20203055" @default.
- W3129374706 startingPage "20203055" @default.
- W3129374706 abstract "The Ediacara Biota preserves the oldest fossil evidence of abundant, complex metazoans. Despite their significance, assigning individual taxa to specific phylogenetic groups has proved problematic. To better understand these forms, we identify developmentally controlled characters in representative taxa from the Ediacaran White Sea assemblage and compare them with the regulatory tools underlying similar traits in modern organisms. This analysis demonstrates that the genetic pathways for multicellularity, axial polarity, musculature, and a nervous system were likely present in some of these early animals. Equally meaningful is the absence of evidence for major differentiation of macroscopic body units, including distinct organs, localized sensory machinery or appendages. Together these traits help to better constrain the phylogenetic position of several key Ediacara taxa and inform our views of early metazoan evolution. An apparent lack of heads with concentrated sensory machinery or ventral nerve cords in such taxa supports the hypothesis that these evolved independently in disparate bilaterian clades." @default.
- W3129374706 created "2021-03-01" @default.
- W3129374706 creator A5028823778 @default.
- W3129374706 creator A5076314477 @default.
- W3129374706 creator A5081710003 @default.
- W3129374706 date "2021-02-24" @default.
- W3129374706 modified "2023-10-01" @default.
- W3129374706 title "Developmental processes in Ediacara macrofossils" @default.
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