Discovery of a New Fossil Species of Ornithopod Dinosaurs Unearthed in Texas

Discovery of a New Species Fossil from Ornithopod Dinosaurs Begins to be Excavated in Texas

"A new genus and species of small-bodied ornithopod dinosaurs has been described from partial jaw bones excavated in Texas, United States."

"Ampelognathus coheni lived during the mid-Cretaceous period, about 96 million years ago, along the shallow marine coastline that divided North America into eastern and western landmasses at that time."

“The ‘mid’ Cretaceous period marks a time of significant change in the terrestrial ecosystems of North America,”

words of paleontologist from the University of Wisconsin-Parkside Christopher Noto and his colleagues.

“Vertebrate species originating from Asia began to cross new Beringia connections and appeared in the fossil record of North America, angiosperms began to dominate terrestrial flora, and groups that were previously diverse in North America declined or disappeared from the fossil record.”

"Source: Sci.news"

The translation of "Membagi Benua" to English is "Dividing the Continents."

"The arrival of the Western Interior Seaway during the Cenomanian (100.5-93.9 million years ago) divided the continent into the Appalachian landmass to the east and Laramidia to the west, creating independent evolutionary conditions for terrestrial biota on either side of the Western Interior Seaway until the mass regression in the Maastrichtian period (72.1-66 million years ago)."

"Ampelognathus coheni is a member of the clade of the dinosaur Ornithopoda and is a sister species to the ornithopod group that includes Thescelosaurus and Iguanodontia. A largely complete left jaw from this new species was collected from the Lewisville Formation (Woodbine Group) exposure along the emergency channel of Grapevine Lake, in the northern part of Tarrant County, Texas."

“Woodbine Group sediments exposed in northeastern Texas were deposited along the southwestern edge of Appalachia as a series of nearshore, coastal, distal floodplain, lake, and fluvial deposits during the regression of the Western Interior Seaway in the early to mid-Cenomanian time,”
The translation of "kata ahli paleontologi" to English is "words of a paleontologist."

Source: Sci.news

to English is:

“Lewisville formation (upper Woodbine group) preserves the most diverse collection of terrestrial fossils known from Appalachia, yet remains of small ornithischian dinosaurs are strikingly absent there.”

Discovery of a New Fossil Species of Ornithopod Dinosaurs Unearthed in Texas

According to the team, Ampelognathus coheni is the first small-bodied ornithopod dinosaur found from the Lewisville Formation.

"The importance of this discovery is to provide elements of the ancient ecosystem that were previously lost but were estimated," said Dr. Noto.
“Naming a new species is always exciting, because it means we are adding new information to science.”

“Ampelognathus coheni is important because it represents the first identified small-bodied herbivore from the Woodbine Group.”

“<i>Sampai saat ini, kita hanya memiliki sedikit hewan herbivora dan hanya satu yang merupakan dinosaurus, sehingga hal ini menimbulkan suatu misteri</i>.”

“Until now, we only have a few herbivorous animals and only one that is a dinosaur, which raises a mystery.”

“This fossil helps fill that gap and expands our understanding of how the terrestrial ecosystem in Woodbine formed over 95 million years ago.”

The discovery is described in a paper published on October 13, 2023, in the Journal of Vertebrate Paleontology.

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