500-million-year-old sea creature unearthed

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Scientists have unearthed extraordinarily preserved fossils of a 520-million-year-old sea creature, one of the earliest animal fossils ever found, according to a new study.
The fossilized animal, an arthropod called a fuxhianhuiid, has primitive limbs under its head, as well as the earliest example of a nervous system that extended past the head. The primitive creature may have used the limbs to push food into its mouth as it crept across the seafloor. The limbs may shed light on the evolutionary history of arthropods, which include crustaceans and insects.

“Since biologists rely heavily on organization of head appendages to classify arthropod groups, such as insects and spiders, our study provides a crucial reference point for reconstructing the evolutionary history and relationships of the most diverse and abundant animals on Earth,” said study co-author Javier Ortega-Hernández, an earth scientist at the University of Cambridge, in a statement. “This is as early as we can currently see into arthropod limb development.”

The findings were published Wednesday in the journal Nature.

Primordial animal


The fuxhianhuiid lived nearly 50 million years before animals first emerged from the sea onto land, during the early part of the Cambrian explosion, when simple multicellular organisms rapidly evolved into complex sea life. 

Written By: Tia Ghose
continue to source article at science.nbcnews.com

12 COMMENTS

  1. It’s so old that it must have been built that way because there just isn’t enough time to get that animal through evolving before the flood killed off all the dinosaurs and Jeebus got born.

  2. Wow this is an amazing fossil for the early Cambrian. Most of the lineages from this period died out but it looks like this creature may be the ancestor of existent species.
    Thanks for the link.

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