Associated Fossils From Different Species Together

[Thomas.Dodson]

Nice thread. Here a few pieces of associated species from my collection.

 

First, Balanus sp. encrusting a Crassostrea gigantissima from the Eocene of Georgia, Burke County (Mcbean Formation).

A crinoid anchor engulfed by a Favosites sp. coral in the Fern Glen Formation (Mississippian, Osagean) of Jefferson County Missouri. I might go over the other side with the air abrader another time but this side is good for now.

 

Closely associated specimens are common in the highly fossiliferous concretions of the Fox Hills Formation (Cretaceous, upper Maestrichian) in Emmons County North Dakota. This Discoscaphites gulosus has a couple of juvenile Scaphitidae ammonites wedged in the opening. I don't identify the small juveniles so it could be D. gulosus as well but Hoploscaphites comprimus is far, far more common at this site.

 

[siteseer]

On 8/20/2020 at 6:38 PM, Ludwigia said:

I figure I might as well add this one while I'm at it. Fresh off the press. A facies block from the sponge facies in the Early Kimmeridgian hypselocylum zone from the Danube Valley. Included on the sponge pieces are a Laevaptychus obliquus aptychus, a rhynchonelloid brachiopod, a Streblites tenuilobatus and 2 Aspicoceras sp. ammonites and an echinoid spine.

 

 

Wow, that's a great piece too, Roger.

 

Jess

 

 

[siteseer]

Here's a matrix piece from the early Miocene Mannum Formation of Mannum, South Australia, Australia.  This one contains an apparently complete specimen of the sea urchin, Lovenia forbesi, a partial one, and several Fibularia gregata, another sea urchin species (the smaller, rounder objects).  The complete Lovenia is 7/8 inches, or 21mm, along its longest dimension.

 

I thought about prepping it more but I like to keep the "natural look" and left as it was when I bought it at a local show.

[Tidgy's Dad]

Three brachiopods in  a little rock : 

Oepikina inquassa (top), Hesperorthis tricenaria (centre below) and Pionodema subaequata (right). 

 

[Wrangellian]

Here's an interesting one I found at my local Cretaceous site the other day: (cf) Hormathospongia dictyota with ?Hypophylloceras sp. or just Phylloceras sp. (Santonian Haslam Fm.)

What's new about this one is not only the association in one piece but also the occurrence in the geothermally 'baked' shale that occurs in patches in this area (in this case at the West end of what I call the Sponge Site due to the fact that it's the only spot I have found these sponges). This tends to dissolve the fossil shell (or whatever) leaving behind an empty cavity or impression, and an oily sheen on the rock. In the case of the ammonite it has revealed the sutures. The ammonite is what initially caught my eye, but then as I was trying to decide whether to collect it and how, I noticed the sponge.

I'm not completely satisfied with my reassembly job, with that glaring crack, and I wish I had taken better care to recover more of the surrounding bits, but it is what it is.

 

 

Edited April 20, 2021 by Wrangellian

[cngodles]

Here are at least two brachiopods, two straight shelled cephalopods (Pseudorthoceras sp), and two coiled cephalopods at the very least on this piece. The entire block is 10 cm wide. I was considering exposing the largest Pseudorthoceras, each brachiopod and the partial coiled shell at the bottom right. Or perhaps just keeping the entire thing all together.

 

Brush Creek limestone, Glenshaw Formation, Conemaugh Group. Late Pennsylvanian.

 

Edited May 1, 2021 by cngodles

[cngodles]

Interesting one I found this evening. This tiny brachiopod had a portion of its shell turned into a soft material. In that material, I found a even tinier Carboniferous trilobite tail piece.

 

Brachiopod was about 6-9 mm wide.

[FF7_Yuffie]

A Wealden Pterosaur tooth along with a Hybodus shark spine, a few fish vertebra and a bit of turtle shell. Plus other small bits of bone.

[nala]

Kingena arenosa brachiopod inside a Acanthoceras rhotomagense cenomanian Cap Blanc Nez Northern France

[nala]

Lovenia bagheerae Irwin & Archbold, 1994. With brachiopod Anakinetica tumida Richardson, 1991. Late Miocene. Port Campbell Limestone, Portland Member.Portland, Victoria.Australia

[siteseer]

On 3/15/2022 at 6:44 PM, nala said:

Kingena arenosa brachiopod inside a Acanthoceras rhotomagense cenomanian Cap Blanc Nez Northern France

 

 

Cool piece, Gery.  Someone had to have a sharp eye to see that.

 

[siteseer]

On 3/15/2022 at 6:45 PM, nala said:

Lovenia bagheerae Irwin & Archbold, 1994. With brachiopod Anakinetica tumida Richardson, 1991. Late Miocene. Port Campbell Limestone, Portland Member.Portland, Victoria.Australia

 

Another great piece, Gery.  It's got a nice example of a Cenozoic brachiopod too.

 

[siteseer]

Here's a little Hoploscaphites on a piece of matrix (Late Cretaceous, Fox Hills Formation, Dewey County, South Dakota) with a couple of others partly exposed with some small pelecypod shells.  My brother was able to capture the iridescent shell still present.  The matrix piece is about 33mm high and the ammonite is roughly 19mm at its widest diameter.

[Yoda]

Carboniferous plant material 

 

 

[cngodles]

Here is a Metacoceras with what I think is a brachiopod in the umbilicus. Also to the left and down is a gastropod, probably Knightites.

 

CG-0343

Scale bar = 1 cm.

[Mark Kmiecik]

[Rock Hound]

Calyx, of a Eucalyptocrinites Crassus; with a Trilobite Pygidium, attached.

 

[Yoda]

Mazon Creek nodule 

Annularia & Pecopteris 

 

 

[opalbug]

A naturally prepped bivalve trying to eat a gastropod from the Nye Mudstone, Lincoln County, Oregon

 

 

 

 

Snail and Barnacles from the Yaquina Formation, Lincoln County, Oregon

 

Edited June 20, 2022 by opalbug

[FranzBernhard]

8 minutes ago, opalbug said:

A naturally prepped bivalve trying to eat a gastropod

Haha !!

Its clearly the other way :

Franz Bernhard