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

[Wrangellian]

I don't think I've posted this here yet: 

Precambrian/Paleoproterozoic Black Hills Fm. Banded Iron from near Cleator (ghost town) Arizona... (again, repeating the seller's info here)

[hemipristis]

1 hour ago, Wrangellian said:

I don't think I've posted this here yet: 

Precambrian/Paleoproterozoic Black Hills Fm. Banded Iron from near Cleator (ghost town) Arizona... (again, repeating the seller's info here)

Darn!  Beat me to it. I was trying to dig up my small piece (not nearly as nice as yours).  My only PC specimen.

[Ludwigia]

10 hours ago, Mahnmut said:

@Ludwigia: Is that one shell or more? I think I do not understand what I see there.

2 shells on top of each other and then a partial bit of shell on top of them. Here's how it looks from the other side.

 

[Mahnmut]

Ok, now it makes sense. Someone prepared for dishwashing and then forgot...

fun fossil!

2 minutes ago, Ludwigia said:

2 shells on top of each other and then a partial bit of shell on top of them. Here's how it looks from the other side.

 

 

 

Edited January 23, 2023 by Mahnmut
addition

[rocket]

13 hours ago, Mahnmut said:

@opalbug, very cool piece of wood, on first look it resembles a raptor egg!

this is what I thought in the first moment, too! Very cool

[Wrangellian]

17 hours ago, hemipristis said:

Darn!  Beat me to it. I was trying to dig up my small piece (not nearly as nice as yours).  My only PC specimen.

I think we'd all like to see your piece, considering the scarcity of PC stuff. I have a couple more small ones too which I could show later. Every one looks different.

[hemipristis]

6 hours ago, Wrangellian said:

I think we'd all like to see your piece, considering the scarcity of PC stuff. I have a couple more small ones too which I could show later. Every one looks different.

Now if I can only find it…. (See New Years Resolutions thread)

[Mahnmut]

On 1/23/2023 at 6:08 AM, Wrangellian said:

I don't think I've posted this here yet: 

Precambrian/Paleoproterozoic Black Hills Fm. Banded Iron from near Cleator (ghost town) Arizona... (again, repeating the seller's info here)

 

 

wonderful color, and to think about the changes in atmosphere and sea chemistry those beautiful bands represent is mindblowing!

[Wrangellian]

6 hours ago, hemipristis said:

Now if I can only find it…. (See New Years Resolutions thread)

Say no more...

[Wrangellian]

Are we in need of a Cambrian fossil? OK here it is.

Olenellus sp. Lower Cambrian (Stage 4?), Fort Steele, B.C. (self-collected)

 

 

[Ludwigia]

The graptolite Climacograptus sp.(25mm. long) from Coal Pit Bay near Donaghadee, Northern Ireland. Wilsoni zone, Lower Hartfell Shale, Caradoc, Late Ordovician. Found in 2009 on my free day during a business trip.

 

 

 

[FranzBernhard]

Two days without any activity?

So I am copying this over from a four year old thread.

Collage of sectioned orthoconic nautiloids from the uppermost Silurian Eggenfeld-Member, Paleozoic of Graz, Styria, Austria.

Some background info:

33 species of upper Silurian nautiloid cephalopods from a small Austrian occurrence (Eggenfeld-Member, Palaeozoic of Graz) - Partners in Paleontology - Member Contributions to Science - The Fossil Forum

Franz Bernhard

Edited January 27, 2023 by FranzBernhard

[Ludwigia]

And I'll add the button coral Microcyclus thedfordensis ( ø 1cm.) from the Middle Devonian Givetian Widder Formation at the good old clay pit in Hungry Hollow, Ontario.

 

[Pleuromya]

This is a Mississippian dermal scale from the shark Petrodus patelliformis from Worksworth, Derbyshire, UK. It measures 1cm across. 

[rocket]

oh, wow, permain

have a lot

fantastic Stromatolite, permian age, Rhino-Palatina, Germany, cut and polished (otherwise most of them are really ugly)

has approx. 18 cm from left to right end

 

 

[hemipristis]

13 hours ago, rocket said:

oh, wow, permain

have a lot

fantastic Stromatolite, permian age, Rhino-Palatina, Germany, cut and polished (otherwise most of them are really ugly)

has approx. 18 cm from left to right end

 

 

Good stratification and the colors are very aesthetic 

Edited January 28, 2023 by hemipristis

[hemipristis]

“Rainbow” agatized wood

 Araucaria sp.

Triassic Chinle Formation

Holbrook, Navajo County, Arizona, USA

35cm in max dimension

Purchased in 2000 at a Navajo trading post in Tuba City, Arizona

Edited January 28, 2023 by hemipristis

[Ludwigia]

Pleurotomaria amalthei from the Early Jurassic Late Pliensbachian spinatum zone. Found at the clay pit in Buttenheim Bavaria. ø 6.5cm.

 

[Pleuromya]

This is a seed from the Upper Cretaceous Hell Creek formation, Glendive, Montana. It measures about 8mm across. 

[siteseer]

Two teeth of a Cretaceous crocodile genus that survived into the Paleocene.

 

Bottosaurus sp.

Paleocene

Black Mingo Group

St. Stephen, Berkeley County, South Carolina

anterior tooth is 22mm high; posterior tooth is 12mm.

 

 

[Pleuromya]

This is an insect, possibly Acrocera hirsuta from the Eocene Green River formation of Colorado. 

[Ludwigia]

Turricula regularis (4.5cm. long) found in a concretion on Lyby Strand, Limfjord, Denmark during a summer holiday in 2011. Oligocene Velje-Fjord-Formation.

 

[siteseer]

Sphyraena sp. (barracuda tooth)

Late Miocene

Bone Valley Formation

phosphate mine, Polk County, Florida

18mm long

 

 

 

[hemipristis]

Carcharhinus sorrah, spot-tail shark teeth

Upper Pliocene

Java, Indonesia

 

 

[Ludwigia]

Cave bear Ursus spelaeus molar. From a gravel pit in the Pleistocene of Hessen, Germany. An online auctionary find