Quantcast
ZME Science
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    Menu
    Natural Sciences
    Health
    History & Humanities
    Space & Astronomy
    Technology
    Culture
    Resources
    Natural Sciences

    Physics

    • Matter and Energy
    • Quantum Mechanics
    • Thermodynamics

    Chemistry

    • Periodic Table
    • Applied Chemistry
    • Materials
    • Physical Chemistry

    Biology

    • Anatomy
    • Biochemistry
    • Ecology
    • Genetics
    • Microbiology
    • Plants and Fungi

    Geology and Paleontology

    • Planet Earth
    • Earth Dynamics
    • Rocks and Minerals
    • Volcanoes
    • Dinosaurs
    • Fossils

    Animals

    • Mammals
    • Birds
    • Fish
    • Reptiles
    • Amphibians
    • Invertebrates
    • Pets
    • Conservation
    • Animals Facts

    Climate and Weather

    • Climate Change
    • Weather and Atmosphere

    Geography

    Mathematics

    Health
    • Drugs
    • Diseases and Conditions
    • Human Body
    • Mind and Brain
    • Food and Nutrition
    • Wellness
    History & Humanities
    • Anthropology
    • Archaeology
    • Economics
    • History
    • People
    • Sociology
    Space & Astronomy
    • The Solar System
    • The Sun
    • The Moon
    • Planets
    • Asteroids, Meteors and Comets
    • Astronomy
    • Astrophysics
    • Cosmology
    • Exoplanets and Alien Life
    • Spaceflight and Exploration
    Technology
    • Computer Science & IT
    • Engineering
    • Inventions
    • Sustainability
    • Renewable Energy
    • Green Living
    Culture
    • Culture and Society
    • Bizarre Stories
    • Lifestyle
    • Art and Music
    • Gaming
    • Books
    • Movies and Shows
    Resources
    • How To
    • Science Careers
    • Metascience
    • Fringe Science
    • Science Experiments
    • School and Study
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact
No Result
View All Result
ZME Science

No Result
View All Result
ZME Science

Home → Research → Discoveries

Prehistoric fish had the earliest face recognized thus far

Tibi Puiu by Tibi Puiu
September 26, 2013
in Discoveries, Science

first_face_primitive_fish
This primitive fish might be the first animal with a face. (c) Nature

A lot of complex organisms, be them long extinct like dinosaurs or still alive like mammals, present what can only be referred to as a face – a symmetrical arrangement on the head of the animal of eyes, nose and, most importantly, jaw and cheek-bones. Human are particularly adapted to recognizing faces. Thanks to our pattern solving abilities, humans have a keen talent for recognizing faces – an evolutionary treat necessary to distinguish between our peers – even in places that only look like faces (Jesus in a wood stump, human faces on Mars etc.). How did faces evolve and what animal had the first face, though?

Scientists believe the first animal currently known to us to feature what can only be called a face to be a primitive species of fish called  entelognathus primordialis (meaning “primordial complete jaw”). The fish has been dated at 419-million-years old and was found at Xiaoxiang Reservoir in Quijing, Yunnann, China. The stunning fossil was remarkably preserved for its age at the moment of discovery, helping the team of international paleontologists to determine a number of physiological characteristics. One of the first things that came to their attention was the fish’s thick exterior armor and facial bones.

“Entelognathus had a rather unprepossessing face,” co-author Per Erik Ahlberg of Uppsala University told Discovery News. “The mouth was wide, the forehead low and flat, and the small, close-set and almost immobile eyes pointed forwards like a pair of car headlights.”

Jaw-dropping find puts evolution of modern face in a new light

Armour plates and the upper and lower jaw of E. primordialis. (c) Nature
Armour plates and the upper and lower jaw of E. primordialis. (c) Nature

Primitive fish older and even contemporary with e. primordialis must have looked very bizarre by today’s face-featuring standards, considering fossil records. According to Matt Friedman, a lecturer in paleobiology at the University of Oxford, these fish must have  had “broad, shovel-shaped heads with their eyes placed on top, while others had narrow bodies and skulls with their eyes on either side of the head.”  The eel-like lampreys and hagfishes, which are still alive today and which scientists commonly referred them as living fossils, are worthy examples of how these kind of prehistoric animals must have looked like.

Classic textbooks and scientific common knowledge describe the precursors to modern face-bearing animals as looking shark-like. This may be flawed information, according to the authors of the paper. The newly found prehistoric fish “puts a new face” on the original jawed species, Friedman and Brazeua write. Taking this into account, the authors revise the family tree of jawed vertebrates, showing that there is a serious possibility that the modern bony visage originated with e. primordialis’s ancestors. Sharks, it may seem, are actually more evolved organisms that retain aspects from an earlier ancestor – maybe e. primordialis itself. This would mean that humans look more like the last common ancestor of living jawed vertebrates than we thought.

“There has been a long tradition of portraying sharks as especially primitive,” Friedman said. “This is common in textbooks and documentaries that falsely claim that sharks are ‘living fossils’ and have gone unchanged for millions of years.”

It’s still unclear as to why jaw and cheek-bones appeared. A leading theory rather intuitively states that the face evolved as a superior feeding mechanism, allowing for a more flexible and adapted way of chewing on larger prey. Study co-author Brian Choo  suspects that jaws might have “evolved initially for breathing, as an apparatus to control the flow of water across the gills.”

The findings appeared in the journal Nature. [story via Discovery]

[NOW READ] Did you know there’s a fish that has human teeth? The sheepshead fish is one of a kind

Was this helpful?


Thanks for your feedback!

Related posts:
  1. Dinosaurs were a lot lighter than previously thought. Study might change the way we’ve envisioned dinosaurs thus far
  2. The stars of the densest galaxy discovered thus far are 25 times closer than in Milky Way
  3. The most energetic light recorded thus far hits Tibetan plateau
  4. Malaria-carrying mosquitoes manipulated only to breed males, thus wiping whole populations
  5. Beautiful Undulating Clouds officially recognized as a New type of Cloud Formation
Tags: fishpaleontologysharks

ADVERTISEMENT
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
  • Reviews
  • More
  • About Us

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

No Result
View All Result
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

Don’t you want to get smarter every day?

YES, sign me up!

Over 35,000 subscribers can’t be wrong. Don’t worry, we never spam. By signing up you agree to our privacy policy.

✕
ZME Science News

FREE
VIEW