
Paleontologists have actually explained the earliest recognized member of Haidomyrmecinae– an extinct subfamily of ants that just lived throughout the Cretaceous duration– maintained as a rock impression in the limestone of the Crato Formation in northeastern Brazil.
Vulcanidris cratensisholotype. Scale bar– 2 mm. Image credit: Lepeco et aldoi: 10.1016/ j.cub.2025.03.023.
Called Vulcanidris cratensisthe brand-new ant types lived 113 million years ago (Early Cretaceous date).
The types represents the earliest conclusive ant understood to science and likewise the most total proof for the early advancement of ants in the fossil record.
Vulcanidris cratensis represents the earliest sound geological record of ants,” stated author Dr. Anderson Lepeco, a paleontologist at the Museu de Zoologia da Universidade de São Paulo.
“What makes this discovery especially intriguing is that it comes from the extinct ‘hell ant,’ understood for their unusual predatory adjustments.”
“Despite belonging to an ancient family tree, this types currently showed extremely specialized physiological functions, recommending distinct searching habits.”
The previous earliest ants were discovered in France and Myanmar and were maintained in amber rather of limestone.
The presence of a hell ant in Brazil reveals that ants were currently extensively dispersed and diversified early in their development.
“Even though there have actually been hell ants explained from amber, this was the very first time we might imagine this in a rock fossil,” Dr. Lepeco stated.
Dr. Lepeco and coworkers found the extremely unspoiled ant specimen while methodically analyzing among the world’s biggest collections of fossil bugs from the Crato Formation, a deposit renowned for its extraordinary fossil conservation.
“When I experienced this amazing specimen, we instantly acknowledged its significance, not just as a brand-new types however as possibly the conclusive proof of ants in the Crato Formation,” Dr. Lepeco stated.
“This finding highlights the value of comprehensive evaluation of existing collections– personal or in museums– and brings a spotlight to Brazilian paleontology and the underexplored fossil pest animals of the nation.”
Utilizing micro-computed tomography imaging, the paleontologists discovered that Vulcanidris cratensis was carefully associated to hell ants formerly understood just from specimens maintained in Burmese amber from Myanmar.
The finding reveals that the ants were commonly dispersed around the world and needs to have crossed Cretaceous landmasses consistently.
What amazed them most was the hell ant’s specialized functions.
“While we anticipated to discover hell ant functions, we were stunned by the qualities of its feeding device,” Dr. Lepeco stated.
“Unlike contemporary ants with laterally moving mandibles, this types had mandibles that ran forward parallel to the head and facial forecast anterior to the eyes.”
“Finding such an anatomically specialized ant from 113 million years ago difficulties our presumptions about how rapidly these bugs established complicated adjustments.”
“The detailed morphology recommends that even these earliest ants had actually currently developed advanced predatory techniques substantially various from their contemporary equivalents.”
“The discovery of this brand-new ant specimen raises more comprehensive concerns about the evolutionary pressures that resulted in the hell ant’s special adjustments.”
“With innovative imaging tools, it’s now possible to analyze such fossil specimens in much higher information than ever in the past.”
The discovery of Vulcanidris cratensis is reported in a paper released today in the journal Existing Biology
_____
Anderson Lepeco et alA hell ant from the Lower Cretaceous of Brazil. Existing Biologyreleased online April 24, 2025; doi: 10.1016/ j.cub.2025.03.023
Find out more
As an Amazon Associate I earn from qualifying purchases.