(1) Point Marsden was discovered by William Marsden on 21 March 1802 and named after Matthew Flinders , Second Secretary to the Admiralty .
(2) Point Marsden was discovered on March 21 , 1802 by Matthew Flinders , and named after William Marsden , Secretary of the Admiralty .

Do these two sentences mean the same thing?

Available options:
a). no;
b). yes;
a).