Home ARCHAEOLOGY AND HISTORY Researchers discovered a species of duckbilled dinosaur

Researchers discovered a species of duckbilled dinosaur

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Researcher have discovered  a species of duckbilled  dinosaur that prowled the earth some  79 million years ago. The discovery helps explain an evolutionary transition from an earlier duckbilled species to that group’s descendants, according to the researchers.

The dinosaur named Probachylophosauras  bergei  is previously missing link  between  a preceding species ,Acristavus  , which lived about 81 million years ago , and later form Brachylophosaurus , which lived about 77.5 million years ago , the study said.

“ Probrachylophosaurus is exiting  because its age – 79 million years ago – is in between  Acristavus and  Brachylophosaurus , so we would predict that its skull and crest would be  intermediate  between these species . And it is , “ said  Elizabeth Freedman Fowler , adjunct professor at  State University in the US .

“ It is perfect example f evolution with in  a single lineage of  dinosaurs over millions of years ,” Freedman Fowler , who first uncovered  and documented the species said . Their findings highlight  how the new species  of duckbilled  dinosaur  neatly fills  a gap that had existed between an ancestral form with no crest and  a descendant with a larger crest , providing key insight  into the evolution of elaborate display structures in these gigantic extinct herbivores.

“ The crest of Probrachylophosaurus is small and triangular . and would have only poked up a little bit on the top of the head , above the eyes  “ Freedom Fowler explained .

The other bones in the skull are very similar to those of Archystavus   and Brachylophosaurus, Freedom Fowler said. The analysis is based on specimens resulting from the fieldwork in the Judith River Formation in Montana .The discovery was detailed in the journal PLOS ONE

 

 

 


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