 Edward Lhwyd published in 1698 in The "Philosophical Transactions of the Royal Society", the oldest scientific journal in the English language, part of his letter "Concerning Several Regularly Figured Stones Lately Found by Him", that was accompanied by a page of etchings of fossils.One of his etchings figured a trilobite he found near Llandeilo, probably on the grounds of Lord Dynefor's castle, he described as "… the skeleton of some flat Fish …".The discovery of "Calymene blumenbachii" (the Dudley locust) in 1749 by Charles Lyttleton, could be identified as the beginning of trilobite research.