Organism · Chlorophyta
Doushantuophyton lineare
Source time context (not species duration) · ≈ 635–539 Ma
Inferred life reconstruction
Doushantuophyton lineare
Overview
Doushantuophyton lineare is an Ediacaran fossil organism whose slender branches divide repeatedly in two. Some specimens preserve the body together with a holdfast. Repeated branching and attachment at the base can be compared.[1]
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Key facts
The caption describes CUGMUS-MX-408 as preserving a complete thallus together with a holdfast. It provides material for examining not only branch shape but also where the body attached. Two different structures connect in one small fossil.[1]
Time and place
It is known from species-specific literature addressing Ediacaran fossils. The Ediacaran was roughly 640–540 million years ago. Branching and holdfasts reveal the construction of an ancient organism.[1][2]
The fossils used in the study are Late Ediacaran material from the Miaohe Member in present-day southern China. Researchers examined 460 specimens: five from the Sanlihuang section and the remainder from the Maxi section.[1]
The time range describes source context, not the complete duration of this species.
Size, form and skeleton
The branches are narrow and generally similar in width, continuing straight before dividing in two. Discoidal or rhizoidal holdfasts also appear in the description. Repeated branching above and attachment below can be examined separately.[1]
The preserved lengths of the 460 specimens studied ranged from 1.2 to 27.3mm. Most fossils are incomplete, so these lengths differ from the full sizes in life.[1]
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Habitat and reproduction
How did the branching body connect to the substrate? Specimens preserving holdfasts reveal both the branched portion and the base. Questions about how a body was positioned can begin with a small attachment structure.[1]
Fossil discovery
The study compared many incomplete specimens with more complete ones. It described branch widths and how many successive dichotomies were preserved. Comparing material with different degrees of preservation helped reveal the body’s construction.[1]
References
- A systematic description of new macrofossil material from the upper Ediacaran Miaohe Member in South China
- International Commission on Stratigraphy (2024) — Geological time chart
- Study — Branching and attachment structures of Doushantuophyton
- International Commission on Stratigraphy (2024) — Geological time chart
- Dunn et al. (2019) — A study of the morphology of Charnia
- International Commission on Stratigraphy (2024) — Geological time chart
Research questions
Does branching in two always repeat at the same intervals and for the same number of divisions? The specimens in the literature differ in the number of preserved divisions and their completeness. The broad repeating pattern can be examined alongside differences among individual branches.[1]
Observation
Follow the slender branches upward from the holdfast. Finding successive points where they divide in two reveals how simple branching creates the impression of the whole body.[1]
Related organisms
Charnia masoniAnimalsSource time context (not species duration) · ≈ 635–539 MaRepeating structures in Ediacaran bodies
Doushantuophyton has slender branches dividing in two, while Charnia repeats smaller branching within alternating large branches. Examine the branch arrangements of these two Ediacaran organisms side by side. Considering attachment structures below and branching above reveals different ways for small repeating parts to form a whole body.