Complex sentence: The fossils were described by Simon Conway Morris and John Peel in a short paper in 1990 in the journal Nature later a more thorough description was undertaken in 1995 in the journal Philosophical Transactions of the Royal Society of London and larger evolutionary implications was posed.
Split into simpler sentences: The fossils were described by Simon Conway Morris and John Peel in a short paper in 1990 in the journal "Nature". Later a more thorough description was undertaken in 1995 in the journal Philosophical Transactions of the Royal Society of London and larger evolutionary implications was posed.