Jump to content

Adam's Ordovician.


Tidgy's Dad

Recommended Posts

A nice Dictyonema flabelliforme dendroid graptolite from Oslo Fields in Norway. 

It's Tremadoc, Lower Ordovician in age and is thus maybe around 480 mya. 

20171028_135859-1.thumb.jpg.1c63e86fd2e0dccb32aaff0353598251.jpg

Another angle :

20171028_135836-1.thumb.jpg.78701c25b256e1852253bf493029b71e.jpg

  • I found this Informative 2

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

And the reverse side of the block is also covered with Dictyonema. 

20171028_135953-1.thumb.jpg.22e63ade6da01a48f1afb3d082851fba.jpg

  • I found this Informative 2

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

And also from the Oslo area, a slightly later Arenig piece featuring Tetragraptus serra.  

20171028_140520.thumb.jpg.0560cf6c7e0954920c94b78a168581de.jpg

Unfortunately, you can't see all four stipes on any of them. About 475 mya. 

  • I found this Informative 5

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

20171028_140713-3.thumb.jpg.5b10a2ecad6b903d31bffbae52a86bb4.jpg

20171028_140523-1-1.thumb.jpg.993d7d2f762e3bc24e23763553718eab.jpg

 

20171028_140713-2.thumb.jpg.e9722681e314cd131071de60b060382a.jpg

 

The reverse side of this specimen contains a completely different species of graptolite. (see next post.) 

  • I found this Informative 7

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Nice specimens, we don't see enough graptolites. Dictyonema flabelliforme  is now Rhabdinopleura flabelliformis - I collected a few decades ago and only recently realised it had changed. :)

 

  • I found this Informative 5

Tarquin

Link to comment
Share on other sites

26 minutes ago, TqB said:

Nice specimens, we don't see enough graptolites. Dictyonema flabelliforme  is now Rhabdinopleura flabelliformis - I collected a few decades ago and only recently realised it had changed. :)

 

Thanks 

i'm way out of touch 

These were also collected twenty five plus years ago.

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Here is the reverse side of that Tetragraptus piece above. 

This is Phyllograptus angustifolius also from the Huk Formation, Slemmested, Oslo Basin, Norway, roughly 475 mya. 

There are other graptolites visible, too, probably bits of Tetragraptus and / or other dichograptids I presume.

20171028_140818-1.thumb.jpg.1e8b837a038b424cacdf41bcf8e1e2a5.jpg

  • I found this Informative 2

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

2 hours ago, TqB said:

Lovely Phyllograptus, it's been on my "to find" list for a long time.

 

Thank you. :)

It's the favourite of my graptolites and having the Tetragraptus on the reverse is a real bonus. 

  • I found this Informative 2

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Labelled as Trilacinoceras hunanense, I reckon it's actually Lituites lituus. It's just listed as Ordovician but probably from the Pagoda Formation or Baota Formation, Middle Ordovician. 

 

 

20171028_142235-1.thumb.jpg.f4176968bb002b9869b95a844bc401c7.jpg

20171028_142137-1.thumb.jpg.0070c940b382f4c4da328e0c4f557842.jpg

  • I found this Informative 4

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

I have  Lituites lituus and does look very much like yours. You do have some lovely fossils. 

 

Cheers Bobby 

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

2 hours ago, Bobby Rico said:

I have  Lituites lituus and does look very much like yours. You do have some lovely fossils. 

 

Cheers Bobby 

I thank you, kind sir! :)

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

6 hours ago, Nimravis said:

Very nice fossils.

Thank you very much. Plenty more to come. :)

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

This is Ampyx pristus from the Upper Fezouata Formation of Ouled Slimane, near Zagora, Morocco, so Arenig, Lower Ordovician about 475 million years old or so. It's very nice, but I bought it and think the rostral area has been tampered with, in other specimens I have seen the rostral spine or horn at the front is molded into the glabella as if an extension of it , but here it is just a point at the anterior of the pre-glabella area. 

Anyway, here it is  :20171028_142316-1.thumb.jpg.92ce457058fffa5e35df0e3551bcd197.jpg

 

 

20171028_142338-1.thumb.jpg.c8f34346ed1af8a6038c3ae5057a8161.jpg

  • I found this Informative 3

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

The correct species is Ampyx priscus Thoral 1935.  Unfortunately, the spines are all fabricated.

 

 

Thoral, M. 1935
Contribution à l'étude paléontologique de l'ordovicien inférieur de la Montagne Noire et révision sommaire de la faune cambrienne de la Montagne Noire.

Thése, Université de Paris, 362 pp.

 

  • I found this Informative 2

image.png.a84de26dad44fb03836a743755df237c.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...