95-million-year-old flowers that bloomed before bees still attract beetles

Scientists have unearthed a remarkable botanical relic — flowers that first bloomed 95 million years ago, long before bees buzzed across the Earth. These ancient blossoms, preserved as fossils, have not only survived the eons but continue to attract beetles for pollination, a relationship that predates the rise of the most famous insect pollinators.

A window into the Cretaceous period

The fossils were discovered in sedimentary rock formations in South America. Researchers from multiple institutions, including the Indian Institute of Science, collaborated on the analysis. The flowers belong to the family Lauraceae, which includes modern-day cinnamon and avocado.

Dating techniques placed their age at 95 million years, squarely in the mid-Cretaceous period. At that time, flowering plants were still a relatively new evolutionary experiment. Bees, which today are synonymous with pollination, had not yet appeared on the scene.

Beetles as ancient pollinators

The study shows that these flowers were specifically adapted for beetle pollination. Their structure — open, bowl-shaped blooms with easily accessible pollen — is a classic beetle-pollination design. Beetles, which had been around for at least 100 million years before these flowers, were the primary insect pollinators of the era.

“What is striking is that these flowers have maintained their beetle-attracting features almost unchanged for 95 million years,” said Dr. Meera Nair, a paleobotanist involved in the study. “It tells us that the beetle-flower partnership was highly successful right from the start.”

A relationship that outlasted the dinosaurs

While bees evolved later and came to dominate pollination in many ecosystems, the beetle-flower relationship never vanished. The newly described fossils show that some plant lineages stuck with what worked. The same beetle species that visited the flowers during the Cretaceous may have descendants that still visit their modern relatives today.

The findings were published in the journal Nature Plants. The researchers used high-resolution imaging to study the microscopic details of the fossilized flowers, revealing the intricate structures that beetles would have crawled over to collect and deposit pollen.

Implications for understanding plant evolution

The discovery challenges the assumption that the rise of bees made beetle pollination obsolete. Instead, it suggests that multiple pollination strategies coexisted for millions of years. “This is a reminder that evolution is not a straight line from primitive to advanced,” said Dr. Rajesh Kumar, a co-author of the paper. “Sometimes, ancient solutions remain perfectly adequate.”

The team is now investigating whether other fossil flowers from the same period show similar adaptations. They also plan to study the chemical compounds in the fossils to see if the flowers produced scents that attracted beetles, much like some modern beetle-pollinated plants do.

The next step for the researchers is to search for fossilized beetles in the same rock layers. If found, they could provide direct evidence of the insects that pollinated these ancient blooms — a literal snapshot of an ecosystem from 95 million years ago.