Astraspida our ancestor

Dalia

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Sep 19, 2016
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We’re here because of this little beast that survived Astraspida
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Their structure, although poorly known, has often been used in evolutionary scenarios to illustrate the primitive state of the vertebrate dermal skeleton. Because of the acellular structure of their dermal skeleton, they were initially considered heterostracans

Astraspida - Wikipedia
 
We’re here because of this little beast that survived Astraspida
View attachment 683396
Their structure, although poorly known, has often been used in evolutionary scenarios to illustrate the primitive state of the vertebrate dermal skeleton. Because of the acellular structure of their dermal skeleton, they were initially considered heterostracans

Astraspida - Wikipedia

Because of the acellular structure of their dermal skeleton, they were initially considered heterostracans

The homostracans were fabulous, but they rarely reproduced.
 
We’re here because of this little beast that survived Astraspida
View attachment 683396
Their structure, although poorly known, has often been used in evolutionary scenarios to illustrate the primitive state of the vertebrate dermal skeleton. Because of the acellular structure of their dermal skeleton, they were initially considered heterostracans

Astraspida - Wikipedia
I met a guy that looks like this. I'd call him fishlips. I don't know if he had a tale. No, this is not our ancestor. Humans from Adam on down are unique to the earth.
 

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