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Home NEWS Science News Biology

Fossilized wing gives clues about Labrador’s biodiversity during the Cretaceous

Bioengineer by Bioengineer
February 21, 2020
in Biology
Reading Time: 3 mins read
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McGill researchers discovery a new species of hairy cicada

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Credit: Alexandre V. Demers-Potvin

A fossilised insect wing discovered in an abandoned mine in Labrador has led palaeontologists from McGill University and the University of Gda?sk to identify a new hairy cicada species that lived around 100 million years ago.

Maculaferrum blaisi, described in a study published in Acta Palaeontologica Polonica, is the first hemipteran insect (true bug) to be discovered at the Redmond Formation, a fossil site from the Cretaceous period near Schefferville, Labrador.

Alexandre Demers-Potvin, a Master’s student under the supervision of Professor Hans Larsson, Director of the Redpath Museum at McGill, said that a single wing was sufficient to identify the family to which the insect belonged.

“We were easily able to demonstrate that the insect belonged to the Tettigarctidae family thanks to the pattern of the veins we observed on its wing,” said Demers-Potvin, who is also a 2018 National Geographic Explorer.

The genus name (Maculaferrum) is derived from the Latin words macula – spot – because of the spotted pattern found on parts of the wing and ferrum – iron – due to the high iron content of the red rocks found at the Redmond site. The species name – blaisi – is in honour of Roger A. Blais, who conducted the first survey of the Redmond Formation and of its fossils in 1957 while working for the Iron Ore Company of Canada.

“This gives us a better understanding of the site’s insect biodiversity during the Cretaceous, a time before the dinosaurs were wiped out,” Demers-Potvin added. “The finding also illustrates that rare species can be found at the Redmond mine and that it deserves the attention from the palaeontological community.”

“The find is exciting because it represents the oldest, diverse insect locality in Canada. It’s also from an exciting time during an evolutionary explosion of flowering plants and pollinating insects, that evolved into the terrestrial ecosystems of today,” said Larsson.

###

About this study

“First North American occurrence of hairy cicadas discovered in a Late Cretaceous (Cenomanian) exposure form Labrador, Canada” by Alexandre V. Demers-Potvin, Jacek Szwedo, Cassia P. Paragnani and Hans C.E. Larsson was published in Acta Palaeontologica Polonica.

This work received financial support from the Fonds de recherche Nature et technologies Québec, a National Geographic Society Early Career Grant, the Northern Scientific Training Program, a Redpath Museum Class of 66 Award and a NSERC Discovery Grant.

About McGill University

Founded in Montreal, Quebec, in 1821, McGill University is Canada’s top ranked medical doctoral university. McGill is consistently ranked as one of the top universities, both nationally and internationally. It is a world-renowned institution of higher learning with research activities spanning two campuses, 11 faculties, 13 professional schools, 300 programs of study and over 40,000 students, including more than 10,200 graduate students. McGill attracts students from over 150 countries around the world, its 12,800 international students making up 31% per cent of the student body. Over half of McGill students claim a first language other than English, including approximately 19% of our students who say French is their mother tongue.

Media Contact
Cynthia Lee
[email protected]
514-398-6754

Original Source

https://mcgill.ca/newsroom/channels/news/fossilized-wing-gives-clues-about-labradors-biodiversity-during-cretaceous-320712

Related Journal Article

http://dx.doi.org/10.4202/app.00669.2019

Tags: ArchaeologyBiodiversity
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