The evolution of Gerhard Heilmann’s Iguanodons (Updated)


(This is a repost of a short piece I wrote for the Shells and Pebbles blog a while ago, but I thought it would not be out of place here and have adapted the text somewhat. In addition, it gives me the opportunity to show off Heilmann’s whole Iguanodon picture, above).

The Danish artist-cum-scientist Gerhard Heilmann, who became famous for his book The Origin of Birds, published a little-known, short piece about Iguanodon a few years later, in an issue of Othenio Abel’s journal Palaeobiologica, dedicated to the Belgian paleontologist Louis Dollo. In many ways, this Iguanodon is much more ‘old-fashioned’ than his dynamic restorations in The Origin of Birds. First, it is positioned much more vertically. Although its tail doesn’t rest on the ground in the way that, for example, Charles Knight reconstructed his bipedal dinosaurs, it is still an altogether more stodgy-looking affair. This is further enhanced by the fact that the animal now looks very iguana- (and therefore reptile-) like.

Continue reading The evolution of Gerhard Heilmann’s Iguanodons (Updated)

Wildfahrt’s snorkeling Iguanodons

… but otherwise surprisingly modern-looking.

The predominant image of dinosaurs as water-going creatures did not limit itself to sauropods; hadrosaurs were also considered to be pond dwellers for a long time. However, the idea of Iguanodon as an aquatic animal was not quite so common. This German work from the late 1940s is testimony to the fact that German paleontology had some pretty idiosyncratic ideas of its own.1)Martin Wildfahrt, Die Lebensweise der Dinosaurier (Stuttgart: Schweizerbart, 1949).

(Illustration taken from P. Bultynck, Bernissart en de Iguanodons (Brussels: Royal Belgian Institute for Natural Sciences, 1987), p. 74.)

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