Researchers Mapped New Bat Evolutionary Tree
A study utilizing chromosome-level genomes and fossil data traces the origin of flight and echolocation.
Updated on Oct. 6, 2026 in Life Sciences
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Researchers have reconstructed the bat family tree by analyzing chromosome-level genome assemblies from 103 living species and 44 fossils. The study, published in Nature, traces the origins of powered flight and laryngeal echolocation to the late Paleocene.
Why it matters
By overcoming the limitations of previous fragmented assemblies and sparse fossil records, this research resolves long-standing conflicts in the evolutionary history of bats. It provides a more reliable genetic framework for understanding how these mammals adapted to flight.
The team utilized the X-linked recombination desert—a region of the X chromosome conserved across mammals for 100 million years—to anchor their analysis. This approach resolved conflicting signals that hindered earlier efforts to map the bat phylogeny.
The players
Texas A&M University
A research institution specializing in genomic analysis and evolutionary biology.
Bat1K consortium
An international research group focused on generating reference-quality genomes for all living bat species.
The details
Researchers employed recombination-aware phylogenomics, a method for interpreting genetic data that accounts for crossing-over events, to reconcile conflicting signals in the bat genome. By combining these high-quality sequences with morphological data from fossils, the team identified Madagascar's sucker-footed bats as the earliest branch of a major lineage. This model provides a clearer picture of how flight and laryngeal echolocation—sound production via the larynx to navigate—evolved over millions of years.
Timeline
100 million years ago marks the start of the XLRD conservation across mammals.
The late Paleocene saw the origin of bats and powered flight approximately 56 million years ago.
The study findings were published in Nature on October 6, 2026.
The Tech Race
This study advances the objectives of the Bat1K consortium by integrating high-quality genomic sequences with the fossil record. It marks a significant departure from earlier, more limited phylogenetic models that relied on incomplete data.
The study provides scientists with a new, high-accuracy genomic reference for comparative biology. While this research is primarily academic, it lays the groundwork for the Bat1K consortium to eventually release reference-quality genomes for every living bat species.
The takeaway
The study successfully bridges gaps in mammalian evolution by using the X-linked recombination desert to anchor genomic data. Researchers should now watch for future Bat1K consortium updates as they work toward their goal of sequencing all remaining bat species.
Further reading
Explore more findings in Life Sciences.
Source note: This article includes information reported by Texas A&M Stories.
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