Topic summary
Thylacocephalan
Extracted from the Wikipedia article Thylacocephala.
Affinities
A 2025 study by Laville and colleagues used synchrotron X-ray tomography on fossil thylacocephalan specimens in order to gain a detailed understanding of their internal anatomy in order to determine the position of Thylacocephala within Crustacea. They recovered thylacocephalans as true crustaceans most closely related Malacostraca. A version of their phylogeny is presented below: