# Thaliacean tunicates, vertebrate sisters regained lifelong mobility

**Authors:** Yasunori Sasakura

PMC · DOI: 10.1371/journal.pbio.3003674 · 2026-03-18

## TL;DR

This study investigates how Thaliacean tunicates, close relatives of vertebrates, evolved to regain mobility after their ancestors became stationary.

## Contribution

The study reveals new insights into the embryogenesis of Thaliacean tunicates and their evolutionary transition to mobility.

## Key findings

- Thaliacean tunicates have a unique embryogenesis process distinct from other tunicates.
- They regained mobility from a sessile ancestor, offering new perspectives on tunicate evolution.

## Abstract

Tunicates are the closest living relatives of vertebrates, but many details of their evolutionary history remain unclear. A study published in PLOS Biology explores the unique embryogenesis of Thaliacea, the tunicates that regained mobility from their sessile ancestor.

Tunicates are the closest living relatives of vertebrates, but many details of their evolutionary history remain unclear. This study explores the unique embryogenesis of Thaliacea, the tunicates that regained mobility from their sessile ancestor.

## Linked entities

- **Species:** Thaliacea (taxon 30304)

## Full-text entities

- **Species:** Tunicata (tunicates, subphylum) [taxon 7712], Thaliacea (class) [taxon 30304]

## Figures

1 figure with captions in the complete paper: https://tomesphere.com/paper/PMC12998864/full.md

---
Source: https://tomesphere.com/paper/PMC12998864