Related topics: fossil record

History of black corals rewritten

Scientists from Queensland Museum Network and the National Museum of Natural History, Smithsonian Institution have rewritten the history of black corals, revealing their origin on the continental slopes (250–3,000 meters ...

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Phylogenetic tree

A phylogenetic tree or evolutionary tree is a tree showing the evolutionary relationships among various biological species or other entities that are believed to have a common ancestor. In a phylogenetic tree, each node with descendants represents the most recent common ancestor of the descendants, and the edge lengths in some trees correspond to time estimates. Each node is called a taxonomic unit. Internal nodes are generally called hypothetical taxonomic units (HTUs) as they cannot be directly observed.

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