def get_singular_and_plural_dtype(self, dtype):
        """
        Parameters
        ----------
        dtype : str
            MagIC table type (specimens, samples, contribution, etc.)

        Returns
        ---------
        name : str
           singular name for MagIC table ('specimen' for specimens table, etc.)
        dtype : str
           plural dtype for MagIC table ('specimens' for specimens table, etc.)
        """
        dtype = dtype.strip()
        if dtype.endswith('s'):
            return dtype[:-1], dtype
        elif dtype == 'criteria':
            return 'table_column', 'criteria'
        elif dtype == 'contribution':
            return 'doi', 'contribution'