Portal:Paleontology/DYK/41
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![A life restoration of two Centrosaurus, the primary constituent of the Hilda mega-bonebed](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Centrosaurus_dinosaur.png/100px-Centrosaurus_dinosaur.png)
- ... that the Hilda mega-bonebed is Canada's largest dinosaur bonebed, preserving thousands of the horned dinosaur Centrosaurus apertus across an area of 2.3 square kilometers?
- ... that the oldest association between Trypanosoma, which causes Chagas disease, and its vector, the assassin bug Triatoma, is found in Triatoma dominicana and Trypanosoma antiquus?
- ... that the extinct crocodile Rimasuchus often preyed on large mammals, including early humans?
- ... that the first described fossil of Aphaenogaster mersa (illustrated) had a white mold coating?
- ... that Tilly Edinger founded paleoneurology?
![A life restoration of Arizonasaurus](http://upload.wikimedia.org/wikipedia/commons/thumb/5/53/Arizonasaurus_BW.png/100px-Arizonasaurus_BW.png)
- ... that Arizonasaurus had a large sail along its back made of the spines on its vertebrae?
- ... that Carletonomys, a rodent related to modern rice rats, is known only from one incomplete upper jaw from over 1 million year old silt deposits in Argentina?
- ... that Urocyon progressus, a species of extinct fox, was formally described after two bones and a tooth were found?
- ... that the scorpionfly family Eorpidae has a single genus, Eorpa, described in 2013?
- ... that based on its skull anatomy, the small Early Jurassic crocodile relative Dibothrosuchus (reconstruction pictured) probably had a keen sense of hearing and was vocal like modern crocodiles?