Newly Named Fish an Evolutionary Enigma | The Institute for Creation Research

Newly Named Fish an Evolutionary Enigma

A new species of chimaera found in Californian waters has been given a name. Chimaeras are bizarre cartilaginous fish with features that stand out among other fish. What also stands out is their lack of evolutionary change over supposed eons of evolutionary time.

Described in a recent paper in Zootaxa, the newly-named Hydrolagus melanophasma is only rarely found off the coast of southern California and down into the Sea of Cortez.1 Chimaeras typically inhabit very deep waters and are sometimes called “rabbitfish” because their grinding tooth plates are similar to rabbit teeth. Also known as ghostsharks, they are similar to sharks in that they have a cartilage skeleton and a generally streamlined shape.

But they differ in significant ways. For instance, their upper jaws are fused to their skulls, they have retractable sexual organs on their foreheads, and they have separate openings that eliminate solid and liquid wastes, whereas sharks have just one opening that eliminates all waste. Like many other chimaeras, a Hydrolagus also has a specialized sense organ on its nose, and it produces its eggs in a spindle-shaped leathery case. Unlike sharks, which constantly manufacture individual replacement teeth, the tooth plates that characterize Hydrolagus chimaeras are made of tubate and pleromic dentine, which are specialized to “increase resistance to abrasion.”2

Chimaeras with armor plating, now presumed extinct, are found in Silurian strata and are said to be over 416 million years old.3 And fossilized chimaeras that correspond in form to living ones can be identified in supposedly 200-million-year-old sediments. What mechanism could possibly have held the neo-Darwinian selection of mutations in check throughout these vast ages?

“Chimaeras…are perhaps the oldest and most enigmatic groups of fishes alive today,” according to a California Academy of Sciences press release.1 What makes them so enigmatic is their marked stasis. If millions of years of evolution really occurred, then these fish, as well as many other unchanged organisms, should have evolved into different forms by now.

But if these fossil-bearing rock layers, including the entire series of Paleozoic and Mesozoic periods, were deposited during the year-long Noahic Flood, then the enigma vanishes. If long ages have not elapsed since their deposition, then the fossils they contain would be expected to resemble their modern counterparts. No puzzle remains.

The assumption of deep time only deepens the mysteries of these deep sea chimaeras.

References

  1. New Species of “Ghostshark” named by Academy Researchers. California Academy of Sciences press release, September 21, 2009, reporting research published in James, K. C. et al. 2009. A new species of chimaera, Hydrolagus melanophasma sp. nov. (Chondrichthyes: Chimaeriformes: Chimaeridae), from the eastern North Pacific. Zootaxa. 2218: 59-68.
  2. Janvier, P. 1996. Early Vertebrates. Oxford: Oxford University Press, 64.
  3. Hedges, S. B., and S. Kumar, ed. 2009. The Timetree of Life. Oxford: Oxford University Press, 320.

Image Credit: SEFSC Pascagoula Laboratory; Collection of Brandi Noble, NOAA/NMFS/SEFSC

* Mr. Thomas is Science Writer at the Institute for Creation Research.

Article posted on October 8, 2009.

The Latest
NEWS
Hot Water, Cracked Rock, but No Life
Could an asteroid impact really spark life? A recent AGU Advances paper says early asteroid impacts might have cracked Earth’s crust and made...

NEWS
Creation Advocate Mike Riddle Goes Home to Be with the Lord
by Randy J. Guliuzza, P.E., M.D., and Jake Hebert, Ph.D.* Following a lengthy illness, Mike Riddle, founder and president of Creation Training Initiative...

NEWS
When DNA Stop Signs Change Their Message
Imagine an intersection where the red stop sign suddenly means, “Right turn only.” Most drivers wouldn’t reach their destinations...

NEWS
August Wallpaper
"The heavens declare the glory of God; and the firmament shows His handiwork"  (Psalm 19:1, NKJV) ICR's August 2026...

NEWS
Helium in Exoplanet's Atmosphere: Apparent Evidence of Youth
The prestigious journal Science has published evidence that a planet orbiting a red dwarf star has an atmosphere.1,2 This extrasolar planet,...

CREATION PODCAST
Christian Geologist: I Studied Rocks for 13 Years - What I Found...
Geologist Dr. Tim Clarey spent 13 years digging into rock layers from every continent on Earth, and what he found doesn't match what most people were taught...

NEWS
Giant Fossil Shark Consistent with Extreme Pre-Flood Longevity
Paleontologists recently rediscovered the largest known set of vertebrae from the giant fossil shark Otodus megalodon, popularized by The Meg movies...

NEWS
Faster Chemistry Is Not the Same as Life
A pile of metal, wires, and computer chips will not assemble itself into a working airplane. The parts may have useful properties, but they still need...

NEWS
Fearsome Cleveland Fossil Is Still a Fish
According to evolutionary theory, fish went through a variety of forms until they evolved into the fish we see swimming today. Recently, what conventional...

NEWS
Let the Fossils Speak for Themselves
When conventional scientists call a fossil an early step in animal evolution, the claim may rest more on a reading of the fossil than on the fossil...