Long before Doctor Who geologists have referred to an era in Earth's history as the Silurian. This is because it was originally identified from sedimentary roc

Long before Doctor Who geologists have referred to an era in Earth's history as the Silurian. This is because it was originally identified from sedimentary rock layers found in south Wales in an area where the Romans had encountered a fierce tribe of natives named the Silures. One thing led to another and British Victorian scholars being what they were, the rocks were named after something a Latin master taught rather than anything locally relevant, like the Welsh. Incidentally, the Silures lived in the part of Wales where the city of Cardiff is located. There is a known active rift in the space-time continuum under the city of Cardiff [0]. This could also explain much. [0] https://en.wikipedia.org/wiki/Cardiff_Rift https://en.wikipedia.org/wiki/Cardiff_Rift