Like hippos, their closest living relatives, whales are descended from an ancestor that had four legs and walked on land.
One such “walking whale” is Ambulocetus natans, which lived about 49 million years ago in what is now northern Pakistan, in long-lost coastal shallow seas and brackish rivers.
Paradentex microdon (Bleeker), a fish from the family street sweepers, now Gymnocranius microdon (Bleeker, 1851) called.
Pieter Bleeker settled in 1842 as a military doctor in Batavia. His interest in nature led him besides his work as a doctor Indonesian nature was describing. Fish were his specialty. Many hitherto unknown types are described by him in the Ichthyological Atlas. This book is considered one of the finest fishing books of the 19th century.
Author: Bleeker, P. [1819-1878]
Printer: P.W.M. Trap.
From: Bleeker, P., Atlas Ichthyologique des Indes Orientales Neérlandaises, VIII, p. 98 Table CCCVIII Figure 3.
London :Reeve and Benham,1850 [i.e. 1848-1850].