Complex sentence: Stephens and Catherwood also reported an early classic stele at the site, with an inscribed date of AD 564 (now in the British Museum's collection), which is interpreted to mean that it was most likely built elsewhere and brought to Tulum to be reused.
Split into simpler sentences: Stephens and Catherwood also reported an early classic stele at the site, with an inscribed date of AD 564 (now in the British Museum's collection). This has bee interpreted as meaning that the stele was likely built elsewhere and brought to Tulum to be reused.