Show Us Your Fossils Challenge Mode: Ordered By Geologic Time Period!

[Ludwigia]

A selection of pyritized Tornoceras arkonense goniatites which I collected myself on my hands and knees at the south pit in Hungry Hollow near Arkona Ontario in 2016. The largest has a ø of 11mm. Middle Devonian Givetian Arkona Shale Formation.

 

[rocket]

lovely Euproops from Carboniferous of Osnabrück / NW-Germany

This is a very early horseshoe-crab, rare in Germany...

Approx. 2 cm Diameter

 

 

[Ludwigia]

A Cordaites branch from the Permian Guadalupian Spondheimer Layers which I found in 2004 at the freshly abandoned clay pit Zeigelei Eimer in Sobernheim, Rhineland-Palatinate, Germany. The block measures 31x13cm. at its widest point.

 

[Wrangellian]

Not to show up Franz with his Monotis specimen, but here is mine, only because I need a Triassic item and I have these shots handy....

 

Monotis (Pacimonotis?) subcircularis,

U. Triassic, U. Norian (Sevatian substage?)

Pardonet Fm, (Schooler Gp)

Pine Pass, NE B.C., Canada

Monotis has a worldwide distributiuon but a fairly limited stratigraphic range, making it a good index fossil.

 

Acquired from one of the old rockhound club members years ago. The only info I had was the Pine Pass location, I had to piece the rest together. Good example of how you can do this from just the location info. Unlike Franz' piece, I did not find mine personally, but I did have a hand in piecing it together.

 

 

 

Edited November 28, 2022 by Wrangellian

[Ludwigia]

Cladophlebis (Todites) princeps from a sand pit in the Bavarian Pechgraben. I was guided there back in 2016 by a colleague whom I got to know over the German website Steinkern. It was a great place for plant fossils from the Early Jurassic Hettangian Bayreuth Formation. The frond is 12mm. long. There were tons of Podozamites to be found, but this one was a real rarity.

 

[JamieLynn]

Lower Cretaceous of Texas - Walnut Formation

Engonoceras stolleyi   Size 4 inches

 

 

[Fossil_Adult]

Otodus Obliquus shark tooth from the Paleocene. Aquia formation, zone 2. Found in Prince George’s county, Maryland. 1.5 inches in length and would probably have hit 1.75 if complete. One of my all time favorite sharks teeth from this time period.

 

 

Edited November 28, 2022 by Fossil_Adult

[JamieLynn]

Eocene of North Carolina  Castle Hayne Formation

Size 1 1/2 inch

 

 

 

 

 

[JamieLynn]

Anybody got any Oligocene? Have we run out of fossils?? 

[Missourian]

52 minutes ago, JamieLynn said:

Anybody got any Oligocene? Have we run out of fossils?? 

 

I have a few to spare:

 

Various bones

Brule Formation, Oligocene

Badlands, South Dakota, USA

 

 

(There may be a piece or two from the Eocene)

[Ludwigia]

I was quite surprised and pleased to have found this at the site near the Lake of Constance where I had been finding mostly shark teeth. Mammal fossils were quite rare, so this was a good find. It also took a while before I could identify it, of course with the help of the knowledgeable colleagues her in TFF. A Bulla timpanica (middle ear bone) from a Cetacian, probably Eurhinodelphis cf. bossi 4x2cm. Found in Miocene Burdigalian layers just last year shorly before the site had practically exhausted itself.

 

[rocket]

Pliocene, oh, I love to shoc 

perfect skull of Machairodus horribilis, Pliocene, Eastern Asia

Lenght is approx. 28 cm, no restauration, just in final prep

 

 

Edited November 30, 2022 by rocket

[JamieLynn]

@rocket    WOW!! That is amazing!!!

 

Pleistocene of Texas

a small Vertebra - probably fish

 

[Wrangellian]

OK, back to the Precambrian. If banded-iron-type things are allowed, here is my piece of 'Snakeskin jasper' from the Pilbara region, Australia.

Age: 2.45by (Siderian, lowermost Paleoproterozoic)

Weeli Wooli Fm (Weeli Wolli?)

~160km SW of Newman, Western Aus.

Curious how this one has broken (brecciated) before solidifying for good, almost as if some sort of microbial mat were involved... You see this same sort of thing in stromatolites such as those from the Mary Ellen mine.

 

Still room for something from a later part of the Precambrian (eg. Ediacaran) if anyone has any!

 

Edited November 30, 2022 by Wrangellian

[Paleorunner]

Cambrian of wheeler Shale - Utah. USA an Elrathia kingii of 2.6 centimeters.
This trilo came in last year's Secret Santa Gift Bundle, offered by @Misha

 

 

[Kane]

Ptychopyge lesnikovae

Ordovician, St Petersburg, Russia. 

 

[Tidgy's Dad]

Middle Silurian - Wenlock. 

Unusually preserved in 3D fenestrid bryozoan Semicoscinium acmeum from the Waldron Shale of Indiana. 

 

[Pleuromya]

Here is the vascular tissue of Aglaophyton major, from the Lower Devonian Rhynie Chert of Scotland. The innermost cells are the protoxylem, surrounded by the thicker walled metaxylem and then the phloem.   

 

 

 

 

 

 

 

 

 

Edited November 30, 2022 by Pleuromya
Added more images

[Ludwigia]

A rather large block with Syringopora geniculata (25x20x9cm.) which I chiselled out of an even larger block on the beach at Malahide underneath Robbswall castle in Wessex county, Ireland back in the summer of 2014. Early Carboniferous Tournaisian Malahide Limestone Formation.

 

[JamieLynn]

Late Carboniferous (Pennsylvanian) of Texas

 

Coral Michelinia sp

Size 1/2 inch

 

 

 

 

 

[hemipristis]

Captorhinus aguti jaw sections, Permian, Oklahama, USA

For scale, the display cases are 1 inch/2.54cm in diameter

 

 

Edited December 1, 2022 by hemipristis

[rocket]

German has nice triassic sediments. Well known are the "Ceratites", a special line in the cephalopods. Extinct at the end of the triassic (perhaps, there are some Ammonites with ceratitic lobus known from upper cretaceous)

this 18 cm big Ceratites nodosus comes from the Muschelkalk-Formation of Harz-Region, North-eastern Germany

 

[FranzBernhard]

Standing:

@Ludwigia: 37 points.

@JamieLynn: 16 points.

@rocket: 15 points.

@Paleorunner, @Pleuromya: 9 points each.

@hemipristis: 8 points.

@Wrangellian: 6 points.

All other contributors 5 points or less.

Note: @Ludwigia has told me, that he will not accept any prize sent to him. So at the moment its up to @JamieLynn, @rocket, and some more contributors to get some ugly Kainach Gosau fossils.

 

Again catching a few points for myself .

Presenting "Fludergrabenmarmor". No, this is not a marble, but a usually coarse and quite tough limestone. Good stone, good workability, former used for buildings, slabs etc. Quite nice, too, with red-brown matrix and white spots. You may guess it: Its crinoidal limestone. Nearly 100 % crinoid debris, sometimes stem parts are preserved, but not much else. Some sites contain abundant brachiopods, but that´s a different story.

Officially, its "Hierlatzkalk" of the "Hierlatzkalk-Formation, age is Lower Jurassic, it follows - with a hiatus - after the Upper Triassic Dachstein limestone in the Northern Calcareous Alps of central Austria. 

This specimens has a freshly broken surface, self collected near an old quarry at Fludergrabenalm, Altausse, Styria, in 2016. Here is a link with some field pics:

Fludergrabenalm (pdf, link to personal homepage, in German).

Franz Bernhard

[historianmichael]

Linuparus grimmeri 

Late Cretaceous Period (Middle Cenomanian to Early Turonian)

Britton Formation

Texas

 

[JamieLynn]

Lower Cretaceous of Texas! 

Pycnodont Teeth from the Glen Rose Formation