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

[Paleorunner]

From the early Cambrian of Yunnan - China. This little arthropod called Bradoriida.

 

 

[Ludwigia]

I just couldn't resist smuggling Kermit in here. A truly representative Ordovician Isotelus.

 

[Pleuromya]

I have this piece containing many fossils from the Silurian Wenlock Limestone, found in Dudley, UK. 

[Peat Burns]

Ascodictyon, middle Devonian Silica Fm, Paulding, OH, USA

[Mochaccino]

A Mississippian crinoid for the aptly named "Age of Crinoids", here's a Macrocrinus mundulus from Crawfordsville, Indiana, USA. You can see the elongated anal tube poking out above the arms as well. This one is hardly rare or unusual, in fact it's the most common species from this locality. However it holds a special place to me for being the first crinoid I ever added to my collection, and one of the first fossils I ever got.

 

Edited July 21, 2022 by Mochaccino

[Mochaccino]

34 minutes ago, Peat Burns said:

Ascodictyon, middle Devonian Silica Fm, Paulding, OH, USA

Very interesting, are those encrusting a brachiopod? I wonder if I can find these guys on one of my Silica Shale specimens

[Missourian]

Heliospongia ramosa

Quindaro Shale, Pennsylvanian

Miami County, Kansas, USA

 

[Peat Burns]

8 hours ago, Mochaccino said:

Very interesting, are those encrusting a brachiopod? I wonder if I can find these guys on one of my Silica Shale specimens

Yes, these are on a Strophodonta brachiopod.  I'd say they are found on about at least 10% of Strophodonta at the Paulding site.  Very clean brachs and a dissecting scope is particularly helpful for seeing them.

[Mochaccino]

9 hours ago, Peat Burns said:

Yes, these are on a Strophodonta brachiopod.  I'd say they are found on about at least 10% of Strophodonta at the Paulding site.  Very clean brachs and a dissecting scope is particularly helpful for seeing them.

Cool, I do have a Strophedonta and a Paraspirifer so I'll have to take a closer look later.

[Crusty_Crab]

On 7/20/2022 at 11:44 AM, Ludwigia said:

I just couldn't resist smuggling Kermit in here. A truly representative Ordovician Isotelus.

 

I couldn't help it either if I owned such a specimen. The resemblance is uncanny. Good picture too, you managed a long depth of field.  

 

 

19 hours ago, Mochaccino said:

A Mississippian crinoid for the aptly named "Age of Crinoids", here's a Macrocrinus mundulus from Crawfordsville, Indiana, USA. You can see the elongated anal tube poking out above the arms as well. This one is hardly rare or unusual, in fact it's the most common species from this locality. However it holds a special place to me for being the first crinoid I ever added to my collection, and one of the first fossils I ever got.

 

I would say that beautiful specimens with nice preservation, complete and nicely prepared are prized specimens, irrespective of how common the taxon is found. That makes your specimen an exceptional piece, not to mention the emotional significance. 

 

 

[Ludwigia]

36 minutes ago, Crusty_Crab said:

I couldn't help it either if I owned such a specimen. The resemblance is uncanny. Good picture too, you managed a long depth of field.

I even fooled around with my photo program and gave him a more natural color

 

[Mochaccino]

1 hour ago, Crusty_Crab said:

I couldn't help it either if I owned such a specimen. The resemblance is uncanny. Good picture too, you managed a long depth of field.  

 

 

I would say that beautiful specimens with nice preservation, complete and nicely prepared are prized specimens, irrespective of how common the taxon is found. That makes your specimen an exceptional piece, not to mention the emotional significance. 

 

 

 

Thank you  indeed it is a special piece to me and quite a nice specimen.

 

 

23 minutes ago, Ludwigia said:

I even fooled around with my photo program and gave him a more natural color

 

I love it!! The pygidium makes Kermit extra expressive.

Edited July 21, 2022 by Mochaccino

[Fossil_Adult]

Here’s goes permian I guess…

 

these are some temnospondyli trackways from the Robeldo mountains formation in New Mexico 

favorite fossils ever found to this day…

[Paleorunner]

Triassic please...... 

[Mochaccino]

Here's one for Triassic, another crinoid: Traumatocrinus hsui from Guizhou, China, in the so-called "starburst" position. Likely a subadult based on size (~9 cm across), branching pattern of the arms, and the tiny spine "nubs" just starting to develop on the arms. These crinoids are thought to have lived attached to driftwood in large colonies, similar to the well-known Jurassic Seirocrinus of Germany and Pentacrinites of the UK. Notably, that ornate circular disk in the center of this specimen's calyx is likely one of the columnals; this crinoid has a proportionately tiny calyx, and its basal and infrabasal plates are almost entirely hidden by the articulation with the columnals, as is seen in this example.

Edited July 23, 2022 by Mochaccino

[siteseer]

Here's an ichthyosaur vertebra from the Late Jurassic Oxford Clay of Dorset, UK.  It's about 3 1/4 inches in widest diameter.  I bought it on my first trip to Tucson in 1989 and remember being very happy with it - still happy to have a nice example from the animal and the time.

 

[FranzBernhard]

Very rustic (aka heavily weathered), but nicely positioned and well-contrasting Trochactaeon from the Kainach Gosau, Austria, collected two weeks ago. Second pic is as found (the left one), third pic is the outcrop, specimen is from area A:

Franz Bernhard

[Ludwigia]

Voluta supplicata from the Paleocene Olching Formation in Kroisbachgraben, Salzburgerland, Austria.

 

[siteseer]

For the Eocene, a Carcharocles auriculatus, an ancestor of the giant shark, C. megalodon.  It's from the Middle to Late Eocene of Vlierzele, Belgium.  What's unusual about it is that it is rather large (2 1/8 inches or 54mm) for the species from that site and teeth that large tend to stay in local collections. 

 

it had belonged to Sparky Johnson, a well-known American collector.  He passed away around 1990.  A friend had just bought some shark teeth from that collection and he showed them to me, saying he was reselling them.  There were some great teeth in the batch including a Parotodus from the Sharktooth Hill Bonebed.  Normally, I would have tried to make a deal for the Parotodus but I recognized the auriculatus as a real oddball in the group.  It was bigger than any I'd ever seen for sale or been offered in trade from Belgium.  If you look at the labial face, you see marks and even depressions where mollusks or other drilling invertebrates had anchored themselves and/or started to drill into it.  I couldn't resist buying it.

Edited July 23, 2022 by siteseer

[siteseer]

Here's an anthracothere incisor to represent the Oligocene (crown height: 14mm; 32mm overall).  It might be referrable to Bothriodon but incisors are generally impossible to pin down to genus.  It's an odd-shaped tooth among the usual oreodont, rhino, and other artiodactyl finds of the time and area.

 

Anthracotheres were primitive artiodactyls that emigrated from Asia into North America in the late Eocene.  They never got much of a foothold there as they became neither diverse nor numerous, dying out by the Middle Miocene.  They survived longer in Europe and Asia.  Their only modern relatives appear to be hippos.

 

anthracothere - incisor

Early Oligocene

Brule Formation

Pennington County, South Dakota

 

[Ludwigia]

Liquidambar europaea from the Middle Miocene Obere Susswassermolasse Formation on the Hoeri peninsula at the Lake of Constance, Germany.

 

 

 

[siteseer]

Here's a well-preserved bird radius just over 4 1/16 inches (10.3cm) from the late Pliocene (Blancan) Broadwater Formation, Broadwater area, western Nebraska.  It might be from a duck.  For scale the bottom of the coffee cup is 3 inches.

[JamieLynn]

Pleistocene tiny mammal tooth- not sure what, rodent of some sort. Post Oak Creek TX

 

Size 5mm

 

 

 

[Pleuromya]

Ediacaran Cyclomedusa from the Mogilev Formation of the Novodnestrovsky quarry in Ukraine. 

 

 

Edited July 25, 2022 by Pleuromya

[Paleorunner]

Here a phyllocarid arthropod, from the early Cambrian. Branchiocaris yunnanensis. From Yunnan-China.