The new study refutes previous claims of the Tullimonstrum gregarium being a vertebrate.
claims to have laid these doubts to rest. A team of researchers in Japan, after studying over 150 fossilizedand 70 other varied animal fossils, say that their research strongly suggests that the Tully monster was indeed not a vertebrate.Using 3D imaging technology, the team uncovered detailed characteristics of the creature which existed on Earth some 300 million years ago and has to date been only found in the Mazon Creek fossil beds in Grundy County, Illinois in the United States.
The most important point is that the Tully monster had segmentation in its head region that extended from its body. This characteristic is not known in any vertebrate lineage, suggesting a nonvertebrate affinity.”Mikami further adds that more research on the Tully monster is needed to understand its evolutionary cycle.Tullimonstrum gregarium, also known as the Tully monster, is a well-known phylogenetic enigma, fossils of which have been found only in the Mazon Creek Lagerstätte.
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