From 2003 to 2004, we collected a large amount of Nautiloid and Graptolite fossils in upper metamorphic formations of Mayigangri area and determined the age to be middle and Late Ordovician-Silurian.
To the question why we do not find rich fossiliferous deposits belonging to these assumed earliest periods prior to the Cambrian system, I can give no satisfactory answer.
So that's a very early reference to a pasty in the shape, I think, that we know it, but also being made specifically for labourers - to be feeding labourers on a farm at harvest time.
They theorized that earlier start times would be associated with lower performance in almost all of those areas - particularly in disadvantaged schools.