Many evolutionists, not content to explain away the gaps in the fossil record, still persist in hopes of finding missing links. This results in a never-ending series of claims concerning the discovery of transitional forms, sometimes sensational. These claims, with passage of time, generally are discredited by further research, although many persist in textbooks long after they are discredited, since once error gets in it is hard to get out.
Just recently one of these evolutionary stories was headlined in newspaper and magazine articles that appeared all over the world. For example, an Associated Press article of April 15, 1983, appeared in the Detroit Free Press with the headline "Missing Link Fossils Tie Whales to Land Mammals." The article reported that scientists say they have discovered fifty-million year-old fossils of a six-foot long, land-dwelling creature they describe as a "missing link" between whales and land animals. The article went on to say that the fossil remains represent the oldest and most primitive form of a whale yet discovered, an amphibious mammal that lived and bred on land and fed in shallow sea waters. One should be immediately suspicious of the term "whale" being given to such a creature, whatever it was, since whales are totally incapable of living or breeding on land.
News of this kind, as tentative and unreliable as it might be, is no doubt most welcome to evolutionists since there is indeed, as is the case with all other mammalian orders, a huge gap between the order Cetacea (this order includes all creatures known inclusively as "whales", whales, dolphins and porpoises) and any supposed ancestral creatures. Speaking of whales, Colbert says "These mammals must have had an ancient origin, for no intermediate forms are apparent in the fossil record between the whales and the ancestral Cretaceous placentals. Like the bats, the whales (using the term in a general and inclusive sense) appear suddenly in early Tertiary times, fully adapted by profound modifications of the basic mammalian structure for a highly specialized mode of life. Indeed, the whales are even more isolated with relation to other mammals than the bats; they stand quite alone."5
But what about the material upon which the newspaper articles were based? Can this material be reasonably interpreted as cetacean? The articles were based on interviews with Dr. Philip Gingerich of the University of Michigan and an article published by Gingerich, Wells, Russell, and Shah in Science.6 The fossil material consists of the posterior portion of the cranium, two fragments of the lower jaw, and isolated upper and lower cheek teeth. The creature this material supposedly represents was named Pakicetus inachus (one can never be certain, of course, that scattered fossil material all belongs to the same species).
This fossil material was found in fluvial red sediments, or river-produced deposits colored by material leached from iron ores. This formation is thus a terrestrial or continental deposit. The fossil remains associated with Pakicetus is dominated by land mammals. Nonmammalian remains include other terrestrial remains such as snails, fishes (particularly catfish), turtles, and crocodiles. This evidence indicates a fluvial and continental rather than a marine environment as would be expected for a whale or whale-like creature.
The authors state that the basicranium (only the back portion of the cranium was found) is unequivocally that of a primitive cetacean. On the basis of the brief description given in the article (eight lines of the text) one has no way of knowing whether that is true other than the declaration by the authors. It seems highly significant in that respect, however, that the auditory mechanism of Pakicetus was that of a land mammal rather than that of a whale, since there is no evidence that it could hear directionally under water nor is there any evidence of vascularization of the middle ear to maintain pressure during diving.
The teeth of Pakicetus are said by the authors to resemble those of terrestrial mesonychid Condylarthra and also to be similar to teeth of middle Eocene archeocete Cetacea such as Protocetus and Indocetus. Mesonychids are thought to be terrestrial mammals that were hoofed and possibly fed on carrion, mollusks, or tough vegetable matter.7 The authors mention two other "primitive cetaceans," Gandakasia and Ichthyolestes, known only from teeth, as being found in the same formation with Pakicetus. These have been described by West,8 and had earlier been identified as land mammals (specifically mesonychids). West, however, reassigned them to the order Cetacea.
Not a single fragment of the postcranial skeleton of these creatures has been found, so we have no idea what they really looked like. The fact that their remains were found in a terrestrial fluvial deposit with fossils of many other land animals, their teeth were very similar to known land animals, and their auditory mechanism was obviously not that of a whale, would seem to indicate, to say the very least, that the claim that a missing link between whales and land mammals has been found is premature. We are reminded of the admission of Professor Derek Ager (no friend of creationists) that practically every evolutionary story he had learned as a student has now been debunked.9 We suggest that Pakicetus will eventually join the ranks of the debunked "missing links" which include Trueman's Ostrea/Gryphea, Carruther's Zaphrentis, Piltdown Man, Nebraska Man, Neanderthal Man, and the hominoid collarbone recently identified as a dolphin rib.10