Talk:Portland Admiralty Roach

350 mm ?
"The stone is rich in fossils (known as shells to local masons) often consisting of almost fifty percent fossilized remains with an average size of approximately 350 mm" 350 mm (35 cm) seems implausibly large to me. I've looked for a source but I can't find one. Is it possible that 35 mm was meant? Jean-de-Nivelle (talk) 17:03, 19 January 2022 (UTC)