Saturday, February 4, 2017

500 million year old species offers insights into the lives of ancient legged worms - BIODIVERSITY


A stubbly, worm-like creature featuring as many as 30 limbs combed the seafloor during the early Cambrian period, according to new research. Its bizarre appearance and feeding behavior are unlike anything ever seen before.

Researchers digging in British Columbia’s Burgess Shale have uncovered the fossilized remains of a 500 million-year-old lobopodian. Named Ovatiovermis cribratus, the newly described animal was only a few inches tall, and filter-fed by waving its body back and forth to scoop up tiny prey. Given its extreme age and unique physical characteristics, scientists say it’s one of the earliest examples of arthropods in the fossil record—a group of animals that includes insects, spiders, scorpions, and crustaceans.


Journal article:
http://bmcevolbiol.biomedcentral.com/articles/10.1186/s12862-016-0858-y

Source & further reading:http://gizmodo.com/this-500-million-year-old-sea-creature-boggles-the-imag-1791821012

Image: Computer animation showing the filter-feeding behavior of the newly discovered lobopodian.
Credit: Jean-Bernard Caron et al., 2017

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