A diploblastic radiate animal at the dawn of cambrian diversification with a simple body plan: distinct from Cnidaria?
Microfossils of the genus Punctatus include developmental stages such as blastula, gastrula, and hatchlings, and represent the most complete developmental sequence of animals available from the earliest Cambrian.Despite strikketøy oppbevaring the extremely well-preserved specimens, the evolutionary position of Punctatus has relied only on their co