Lacks fenestrae makes a triceratops unique when comparing it to other Ceratopsidae.
Triceratops is characterized via a quick frill with a flat squamosal, an upturned caudal margin of the frill, the absence of fenestrae, and a midline epiparietal. Torosaurus is characterized by using an elongate frill with a straighter facet, a concave squamosal, and a shortage of upturning of the frill.
A year-long study by Yale university paleontologists concludes that two associated horned dinosaurs are different animals and not adult and juvenile versions of the same.
Now Scannella and Horner say that triceratops is simply the juvenile form of torosaurus. As the animal elderly, its horns changed shape and orientation and its frill became longer, thinner and less jagged. Eventually, it became fenestrated, producing the traditional torosaurus form.
Learn more about Triceratops here: brainly.com/question/24373044
#SPJ4
