Ammonitida
The Ammonitida is an order of more highly evolved ammonoid cephalopods from the Jurassic and Cretaceous time periods, commonly with intricate ammonitic sutures.
The Ammonitida are divided into four suborders, the Phylloceratina, Lytoceratina, Ancyloceratina, and Ammonitina.
The Phylloceratina is the ancestral stock, derived from the Ceratitida near the end of the Triassic. The Phylloceratina gave rise to the Lytoceratina near the beginning of the Jurassic which in turn gave rise to the highly specialized Ancyloceratina near the end of the Jurassic. Both the Phylloceratina and Lytoceratina gave rise to various stocks combined in the Ammonitina.
These four suborders are further divided into different stocks, comprising various families combined into superfamilies. Some like the Hildocerataceae and Stephanocerataceae are restricted to the Jurassic. Others like the Hoplitaceae and Acanthocerataceae are known only from the Cretaceous. Still others like the Perisphinctaceae are found in both.
Podcasts:
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by Amantyde
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by Amantyde
What Else Is There
by: AmantydeIt was me on that road
But you couldn't see me
Too many lights out, but nowhere near here
It was me on that road
Still you couldn't see me
And then flashlights and explosions
Roads end getting nearer
We cover distance but not together
I am the storm I am the wonder
And the flashlights nightmares
And sudden explosions
I don't know what more to ask for
I was given just one wish
It's about you and the sun
A morning run
The story of my maker
What I have and what I ache for
I've got a golden ear
I cut and I spear
And what else is there
Roads and getting nearer
We cover distance still not together
If I am the storm if I am the wonder
Will I have a flashlights nightmares
And sudden explosions
There's no room where I can go and
You've got secrets too
I don't know what more to ask for