Jump to content

Multi-branched graptolite, Morocco Ordovician, Paradelograptus tenuis


TqB

Recommended Posts

After missing out on a superb one of these when the bidding went a bit crazy, I was pleased to pick this up for very much less :) .

 

The plate contains a large piece of Paradelograptus tenuis, mixed up with broken bits of the same and also Kiaerograptus.

Lower Ordovician, Fezouata Formation, Zagora region, Morocco.

(I think the seller's ID is OK - graptolites can be very tricky and I haven't checked it in depth but it matches one (fig 5B) in this paper on Reseachgate: Ordovician Fezouata

 

I've roughly photoshopped it in photo 2 to show the single specimen and added a mirror image in photo 3 to reconstruct its other half (which was present in the one I couldn't afford - I wonder if anyone here has it? :D).

 

IMG_2778.thumb.jpg.63172631ecd6091029e34169bb4fe2df.jpg

 

 

Other graptolites brushed out:

5a2aed4e85778_IMG_27782.thumb.jpg.c42da7b12c0e07b6e8101c7524c0f5a8.jpg

 

 

Doubled up:

5a2af00439650_ScreenShot2017-12-08at19_57_04.thumb.jpg.2a8f43d6aabb990e82bac15c196c16cf.jpg

 

 

  • I found this Informative 2

Tarquin

Link to comment
Share on other sites

Pretty cool Tarquin. I’ve not seen graptolites like than, not that I’ve seen that many. 

 

When in Czech Rep two years ago I found some graptolites there, I’ll have to dig them out. 

  • I found this Informative 1
Link to comment
Share on other sites

I love graptolites, though i don't have one of these. 

I think we mentioned that they are often undervalued fossils. 

Life's Good!

Tortoise Friend.

MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160-1.png.60b8b8c07f6fa194511f8b7cfb7cc190.png

Link to comment
Share on other sites

Wow, that's pretty cool! :)

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

My Library

Link to comment
Share on other sites

Nice one Tarq.

It's an anisograptid allright,that much is clear.

Below:Erdtmann's P. mosseboensis.*

*Paradelograptus tenellus? Have doubts about "tenuis".

You'd need a well-preserved proximal fragment to be sure

Seeing Gutierrez-Marco as one of the co-authors,makes me think the the graptolite taxonomy is well-founded,but I don't know if 

the graps have undergone an in-depth systematic analysis.

 

aspirpyytykanguujjjiidp88humb.jpg

 

aspirpyytykanguujjjiidp88humb.jpg

aspirpyytykanguujjjiidp88humb.jpg

  • I found this Informative 2

 

 

 

Link to comment
Share on other sites

Nice specimen.. I've been meaning to get me one of these. I do have a small piece of Clonograptus from the same area/formation(?). I have to trust the label on that ID.

Link to comment
Share on other sites

Found it.Some disagreement with Erdtmann(1987),but graptolite taxonomy is a lot like that of other Paleozoic clonal organisms.

I wouldn't go so far as de gustibus,etc,but...

 

 

 

 

aspirpyytykanguujjjiidp88humb.jpg

 

 

aspirpyytykanguujjjiidp88humb.jpg

  • I found this Informative 2

 

 

 

Link to comment
Share on other sites

Thanks, everybody!

 

@doushantuo Good references, Ben - I assume the centre of symmetry is proximal but there are no clear thecae or sicula there. Maybe it's best to just stick with a "cf."

Tarquin

Link to comment
Share on other sites

  • 3 months later...

And another one but no Photoshop needed - same details from the seller as the other but it may be different. The sections between bifurcations are only about half the length for a start but I realise that colony form is not necessarily diagnostic.  

 

IMG_2856.thumb.jpg.8c245499f371416e3073756dbe763619.jpg

 

IMG_2857.thumb.jpg.b9a0c8696ca4b02622e75ac565554535.jpg

  • I found this Informative 1

Tarquin

Link to comment
Share on other sites

On 4/8/2018 at 10:21 AM, TqB said:

And another one but no Photoshop needed - same details from the seller as the other but it may be different. The sections between bifurcations are only about half the length for a start but I realise that colony form is not necessarily diagnostic.  

 

IMG_2856.thumb.jpg.8c245499f371416e3073756dbe763619.jpg

 

 

That's beautiful! :wub:

Life's Good!

Tortoise Friend.

MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160-1.png.60b8b8c07f6fa194511f8b7cfb7cc190.png

Link to comment
Share on other sites

57 minutes ago, TqB said:

@Tidgy's Dad Thanks, they are irresistible. :) I'm planning some graptolite collecting trips and UK versions aren't impossible...

Indeed not. 

i'll be posting some of my UK Silurian ones soon, though they're mainly Monograptus. 

Good luck with your trips. :)

Life's Good!

Tortoise Friend.

MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160-1.png.60b8b8c07f6fa194511f8b7cfb7cc190.png

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...