Grapefruit sized tubes ? possible bird fossil ?

[BC1969]

Hi I found this the other day, and it sure is neat. like some kind of tubes ? I cropped the pics down for size but should be good viewed full size.
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Also found these awhile back, no clue what they are. the slab one is roughly 4×6 inches. the round one is a little bigger than a silver dollar.

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Maybe horn corral ^^ ? my wife says it looks like a fossilized bird of some kind with the rest of the fossil behind the horn or head.

Last one.
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Thanks for looking.

Mike

 

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[austin]

Look like coral, but I'm no expert.

 

[bone2stone]

This is a cluster of what is called Rugosa.
It is a coral and not normally found in clusters of this nature.

Bone2stone

 

[Harry Pristis]

This first specimen resembles Eridophyllum seriale, a Devonian colonial rugose coral. There are both solitary and colonial rugose corals, and this is one of the colonial species.

 

[BC1969]

ahh thanks for identifying those.

Mike

 

[bone2stone]

This first specimen resembles Eridophyllum seriale, a Devonian colonial rugose coral. There are both solitary and colonial rugose corals, and this is one of the colonial species.

Bingo!

Bone2stone