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Fish began evolving about 530 million years ago during the Cambrian explosion. It was during this time that the early chordates developed the skull and the vertebral column, leading to the first craniates and vertebrates. The first fish lineages belong to the Agnatha, or jawless fish. Early examples include Haikouichthys. During the late Cambrian…
The analysis highlights Jawless fish, Jawed fish and Overview as prominent areas in the source structure around Evolution of fish.
Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.
Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
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fish vertebrates devonian bony ostracoderms lobe-finned sharks silurian evolved jawless placoderms known jawed appeared armoured mya conodonts two extinct period
TTTA extracted 6 structured relationships around Evolution of fish. Examples in this analysis include the presence of a backbone → instance of → rather than purely on physical traits and catfish → instance of → He compared them at first with extant armored fish. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| the presence of a backbone | instance of | rather than purely on physical traits | 0.80 | text |
| catfish | instance of | He compared them at first with extant armored fish | 0.80 | text |
| sturgeons but later | instance of | He compared them at first with extant armored fish | 0.80 | text |
| realizing that they had no movable jaws | instance of | He compared them at first with extant armored fish | 0.80 | text |
| classified them in 1844 into a new group | instance of | He compared them at first with extant armored fish | 0.80 | text |
| the coelacanths show a strong similarity to the expected ancestral form of tetrapod limbs | instance of | The fin-limbs of lobe-finned fish | 0.80 | text |
The concept neighborhoods around Evolution of fish bring nearby vocabulary together. In this analysis, examples include Lobe-finned, Bony and Jawless. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For Evolution of fish, one of the stronger structural bridges in this analysis connects Evolution of fish with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around Evolution of fish to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Jawless fish, Jawed fish & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — Evolution of fish · EN edition · Analysis: TopicsToTalkAbout