>If true, that makes it bigger than the longest known other species, the paris Basin Eocene campanilid Campanile giganteus at 0.95m.<

Peter Jung reconstructed a record-sized total for Campanile from the Eocene of the Caribbean (composite of multiple specimens), but I do not recall the total length.  The fold-out plate is quite impressive.

    Dr. David Campbell
    Old Seashells
    University of Alabama
    Biodiversity & Systematics
    Dept. Biological Sciences
    Box 870345
    Tuscaloosa, AL  35487-0345 USA
    [log in to unmask]

That is Uncle Joe, taken in the masonic regalia of a Grand Exalted Periwinkle of the Mystic Order of Whelks-P.G. Wodehouse, Romance at Droitgate Spa