@base . a , , ; , , ; "Journal of the Geological Society." ; ; ; ; "0016-7649" ; ; ; "0016-7649" ; ; "0016-7649" ; "Journal of the Geological Society." , "Journal of the Geological Society (London)" . a . . a , ; "Journal of the Geological Society (London)" . a ; "0016-7649" ; . a ; "0016-7649" ; . a ; ; "20210123161900.0"^^ ; ; .