Distant Human Ancestor Had Shark Head

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Peer far enough back in the human family lineage, and you’ll find a fishy ancestor that looked surprisingly like a shark.
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In fact, this now-extinct fish was among the first to split from  sharks, whose bones are made of cartilage, to evolve into a line of  tough-boned species that includes everything from [bony fish to human beings](http://www.livescience.com/6481-fishy-origins-humans-revealed.html). A new analysis finds that this controversial class of animals was more shark-like than expected.


"The common ancestors of all jawed vertebrates today organized their heads in a way that resembled [sharks](http://www.livescience.com/12837-brink-gallery-wild-sharks.html)," study researcher John Finarelli, a vertebrate biologist at University College, Dublin,  said in a statement. "Given what we now know about the interrelatedness  of early fishes, these results tell us that while sharks retained these  features, bony fishes moved away from such conditions."
news.yahoo.com/distant-human-ancestor-had-shark-head-171350335.html

I thought we evolved from the great apes.
 
I think they mean that we evolved from apes which evolved from these beasties.😉
 
Not too surprising, given previous info on our relation to fish. Although I’m curious why life seemingly started in oceans before moving onto land.
 
well, can you remember your baptism, you were born again through water? Water is a major theme in scripture, and is symbolic of what sustains life.
 
Luigi_Daniele said:
I think they mean that we evolved from apes which evolved from these beasties.😉
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No…we are not evolved from apes…apes and humans have a common ancestor from which both species evolved from…we are evolutionary contemporaries…we didn’t come from apes…we and apes evolved from common ancestors…perhaps even this very early ancestor from the articles indication.
 
MugenOne said:
I thought we evolved from the great apes.
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Nope. Present-day great apes and ourselves evolved from common ancestor that was a lesser ape, like a gibbon. We had no “chimp” ancestors.

Those lesser apes evolved from something like a tarsier, a really, really small one.

Then you get back before primates, and then you get back to, well, all the classes until you get to gnathostomata, jawed, as in fishes. And before jawed… the kind of thing the article talks about.
 
LotusCarsLtd said:
Not too surprising, given previous info on our relation to fish. Although I’m curious why life seemingly started in oceans before moving onto land.
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Not so surprising. If life indeed began from unicelled organisms, which are free-floating, it makes sense that the first large bodies would likewise develop in a free-floating environment (water) before developing limbs that could resist gravity’s pull.

(And, the ocean covers 71% of the world).

ICXC NIKA
 
GEddie said:
Not so surprising. If life indeed began from unicelled organisms, which are free-floating, it makes sense that the first large bodies would likewise develop in a free-floating environment (water) before developing limbs that could resist gravity’s pull.

(And, the ocean covers 71% of the world).

ICXC NIKA
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And from what we know of the geology of the Earth very early on…it was not at all hospitable to “land animals”…the land had to evolve to support land animals just as the primordial ocean had to evolve to support the single cell life forms from which all life evolved.
 
Can’t wait to get to Heaven (hopefully) to be able to tell the baloney (likely, this) from the truth (likely, not this).
 
Julia_Mae said:
Then you get back before primates, and then you get back to, well, all the classes until you get to gnathostomata, jawed, as in fishes. And before jawed… the kind of thing the article talks about.
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Oh yes. The common ancestors to all vertebrates is thought to resemble something similar to the modern day lancelet AKA amphioxus.
Lancelets, or amphioxus, are small worm-like marine animals that spend most of their lives buried in the sea floor, filter-feeding through jawless, ciliated mouths. The vertebrate affinities of these modest creatures were first noted in the early part of the nineteenth century1, 2, and were further clarified by the embryologist Alexander Kowalevsky3. In particular, Kowalevsky observed that, unlike other invertebrates, amphioxus shares key anatomical and developmental features with vertebrates and tunicates (also known as urochordates). These include a hollow dorsal neural tube, a notochord, a perforated pharyngeal region, a segmented body musculature (embryologically derived from somites) and a post-anal tail. Together, the vertebrates, urochordates and lancelets (also known as cephalochordates) constitute the phylum Chordata, descended from a last common ancestor that lived perhaps 550 million years ago.
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nature.com/nature/journal/v453/n7198/full/nature06967.html

Americans of a certain age (such a myself 😊 ) may have been subjected to a humorous song about this while studying biology.

Its a long way from Amphioxus (set to the tune of Its a long way to Tipperary)

*Oh, a fish-like thing appeared among the annelids one day,
It hadn’t any parapods or setae to display.
It hadn’t any eyes or jaws or ventral nervous chord.
But it had a lot of gill slits and it had a notochord.

Chorus:
It’s a long way from amphioxus, it’s a long way to us.
It’s a long way from amphioxus to the meanest human cuss.
It’s good-bye to fins and gill slits, and welcome lungs and hair.
It’s a long, long way from amphioxus, but we all came from there.*

I won’t bore you the whole song. :o
 
Publisher said:
No…we are not evolved from apes…apes and humans have a common ancestor from which both species evolved from…we are evolutionary contemporaries…we didn’t come from apes…we and apes evolved from common ancestors…perhaps even this very early ancestor from the articles indication.
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I agree. I was stating what the pop culture thinks.

Although if it was definitively proven that we did evolve from apes, it wouldn’t bother me too much. God is in charge. He can do it whichever way he chooses. 🙂
 
What does this mean!? There must not be a god…oh wait this makes no difference and God is still the best way to go. Hahaha.
 
“the teaching authority of the Church does not forbid that, in conformity with the present state of human sciences and sacred theology, research and discussions . . . take place with regard to the doctrine of evolution, in as far as it inquires into the origin of the human body as coming from pre-existent and living matter—[but] the Catholic faith obliges us to hold that souls are immediately created by God” (Pius XII, Humani Generis 36).

catholic.com/tracts/adam-eve-and-evolution
 
People should realize how speculative evolution is. Give these people a break. How would you like to have a bag containing 400 pieces which are part of 5 distinct 1000-pieces puzzles and try to put them together?(analogy not mine) Explaining the origin of life must be one daunting task when variable uno is systematically left out? Variable uno is God. It would be nice to have an authoritative book on just what is certain about evolution, what is plausible and what is pure speculation. We didn’t know for certain if all the computers in the whole wide world weren’t gonna crash on January 1st 2000, yet we know for certain what happened hundreds of thousands if not millions of years ago? A little humility, please.
 
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