Jump to content

Adam's Ordovician.


Tidgy's Dad

Recommended Posts

Also in the family Rafinesquinidae is this Megamyonia unicostata from the Maquoketa Group, Late Ordovician of Spring Valley, Minnesota.

1a.jpg.2bde29ddbc005c53062ffd5015262f3b.jpg

1b.jpg.33c1163e5eaaa51a1f03b72f14ffed61.jpg

The steep anterior :

1c.jpg.0ab27c2b237233e96d887763c0d98c5c.jpg

Side view showing the slope :

1d.jpg.f4d1046e596c02d6bafc9a70131c6e66.jpg

In the same rock is this impression. This one could be Thaerodonta :

2.jpg.7253a71e956bf3869fdf445f1dbaafe9.jpg

So thank you very much Ralph @Nimravis for this specimen.

 

  • I found this Informative 3
  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

As a bonus item in a recent auction win, I received these pieces of matrix from the Kope Formation of Campbell County, Kentucky from @ClearLake, so thanks very much for these, Mike, old chap. :i_am_so_happy:

0.thumb.jpg.c11fa66fad66485a731ff541c1235bc6.jpg

The Kope Formation marks the base of the Cincinnatian Series of the Late Ordovician. The top of it, which can be rich in Vinlandostrophia ponderosa brachiopods is present at the Lawrenceburg site from which I have a lot of specimens, but most of the fossils from that location seem to come from the overlying Fairview Formation. Most of the Kope seems not to be as diverse in brachiopod species as the Fairview, but the species that do occur can be very numerous as in these pieces that seem to only contain the one species, Cincinnetina multisecta which can also be found abundantly, but interspersed with other species in the Fairmount. 

 

Here are some Cincinnetina multisecta from these new Kope Formation mini-hash pieces :

1.thumb.jpg.94531ec48f62bafe54fa8435f1a77e20.jpg

1a.thumb.jpg.93a088e83585d5d35f87d41ada7db930.jpg

1b.thumb.jpg.b420a9febbc58fb1c8ac7c522d1a243b.jpg

1c.thumb.jpg.5e20adf8d089d897e6a3e33315b784fe.jpg

1d.thumb.jpg.aa79d03869a59ff8d51fafeda33a2952.jpg

1e.thumb.jpg.edf3f32fd4c5d8cd12681f3d04d3293c.jpg

1f.thumb.jpg.784f0398c46fa4e3b21de0f23dcc5482.jpg

1g.thumb.jpg.50dfc2c23158bb75e193dff4bca02b99.jpg

 

 

  • Enjoyed 3
  • I Agree 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

The pieces are full od bits of crinoid and bryozoan. 

The most common bryozoan seems to be the tiny Bythopora arctipora, branches 1 to 1.5 mm wide.  And a Flexicalymene thoracic segment. 

3.thumb.jpg.a400985dfe4756d82f36bd6b4bffdfb6.jpg

3a.thumb.jpg.9df124daf9ef62bfa9f2c24eac0ae1c2.jpg

3b.thumb.jpg.d1c5a107f2f30081171e6db80edf440e.jpg

3d.thumb.jpg.db3aeebd47277113fd4573d4aa78e79c.jpg

Nice to have these Bythopora arctipora as I have other species of the genus from the younger Fairview and Liberty Formations.

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

This one's a bit different from Bythopora arctipora, you can see Bythopora on the left of the photo and the specimen on the right is even thinner, 1 mm or less wide, bifurcates differently and has spines around the zooecia. I think this is Parvohallopora onealli, very different to the species of Parvohallopora in my collection from the overlying Fairview and even later Liberty Formations. 

2.thumb.jpg.fa708f97ef1c4cc4e88ef72db85806f8.jpg

  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Some lovely recent updates to your thread Adam! Beautiful Cincinnetina multisecta and nice bryozoans. Did you spot the little Parvohallopora onealli with your microscope? Good eye! :look:

 

I don’t have anything from the Kope Formation yet. I’m :envy:!

  • Thank You 1

The good thing about science is that it's true whether or not you believe in it.  -Neil deGrasse Tyson

 

Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy)

Link to comment
Share on other sites

6 hours ago, FossilNerd said:

Some lovely recent updates to your thread Adam! Beautiful Cincinnetina multisecta and nice bryozoans. Did you spot the little Parvohallopora onealli with your microscope? Good eye! :look:

 

I don’t have anything from the Kope Formation yet. I’m :envy:!

Thank you, Wayne, you can find lots of beautiful examples of Cincinnetina multisecta from the Lawrenceburg road cut and likely from the Fairview Formation near the bottom of Page 12 of this thread. I don't have much from the Kope Formation, so these little hashes are very welcome. I am gradually managing to accumulate quite a decent collection of material from different formations of the US Cincinnatian. 

 

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Here is the disc shaped bryozoan Aspidopora newberryi which is the other common species found in the Kope. 5 to 7 mm or so in diameter, but these are broken fragments and so only half the size. Some of them could be other rarer species of Aspidopora that do occur in the Kope Formation, but I can't really tell the difference so they should be labelled Aspidopora sp. 

Bit of genal spine/ free cheek just above this first fragment, I think. 

1.thumb.jpg.bc2c8d70c4a436c23020ce9b04f86b1e.jpg

1a.thumb.jpg.7dfa3f62fa464b7864c360017cd8ae1f.jpg

1b.thumb.jpg.436affb840a608cda76c78ba3a9831a1.jpg

1c.thumb.jpg.12587b8f90e134a1be2754a313637107.jpg

1d.thumb.jpg.92974ac322607012f51cf2a5d50bda8b.jpg

1e.thumb.jpg.a74317cceb692cd6bc1f12537a642729.jpg

 

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

There are also quite a lot of tiny trilobits in this Kope Formation matrix.  

I posted this bit earlier and think it is a thorax segment from Flexicalymene granulosa. I have different species of Flexicalymene from different continents and ages of the Ordovician. What a successful genus it was and what a range of sizes! 

10f.thumb.jpg.b7e80eec715cde12366561217ce72290.jpg

Most of these other bits are only one to 3 mm. 

I think these are F. granulosa librigenae :

2

0a.thumb.jpg.6fa23b83eb5b05707b01f443571667fc.jpg

3:

0c.thumb.jpg.78ed439a117103d5493d4373434c7655.jpg

4.

0b.thumb.jpg.d26bef1b246c779bbf7507f693232666.jpg

5.

Bit of cranidium? 

0d.thumb.jpg.baff4f81790996f87e4f51b6fe958c05.jpg

6. A cranidium of what? 

0e.thumb.jpg.0d6ece16d38ebbd7ab33272c10e10dcd.jpg

7. Tiny spiky bits maybe from Acidaspis cincinnatiensis? Or Primaspis crosutus? This was a long ranging species, I have bits from other Formations in the Cincinnatian too. 

1.thumb.jpg.8e33e3c90c821bbebb969a8d4d2e9d0f.jpg

8.

1a.thumb.jpg.b22caff892ca7834386da0d538738773.jpg

9. Genal spine / free cheek from ? 

2.thumb.jpg.ca1f29732fbf25a88f6bd6cb0af55b6f.jpg

10. Another spine or two :

3.thumb.jpg.5a751de4b047236c56f13a02d132c087.jpg

11. Spine with tubercles

4.thumb.jpg.3b4131b31270a16cb6957850b068a4b2.jpg

Any help with these much appreciated. 

Ideas, Scott, if you have a moment, please? @piranha

Thank you to all who have a looksie. 

 

  • Enjoyed 2

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

The stem sections with a five-pointed star shaped articulation on the columnals are Cincinnaticrinus

5c.thumb.jpg.1ea41e2feaebd2f33e3aa36ad71d30c4.jpg

5.thumb.jpg.3174dcba4c8cef9112e311af67544e7a.jpg

5a.thumb.jpg.a1d45fca09016f181663c0cf0aaa3b1a.jpg

Possible crinoid holdfast near the bottom of the photo?

5b.thumb.jpg.b5b3439bad2a1a9c48aeabf72264ddb8.jpg

5d.thumb.jpg.982ce1cfdb83d7fc482ef6ef77a30529.jpg

 

  • I found this Informative 1
  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Some pieces are packed with crinoid remains. This piece shows Cincinnaticrinus, but most of the others will likely be the common Ectenocrinus simplex, though other crinoids are present in the Kope Formation. 

6.thumb.jpg.d4fabe7b3329854f377db6f930db15c4.jpg

Crinoid bits

6a.thumb.jpg.5ef1b9abefeb2a932fb1bf626a95b661.jpg

Glyptocrinus? ; 

6b.thumb.jpg.5d67a5d96c0656e3b3c942a85e86fe4b.jpg

Base of a calyx? 

6c.thumb.jpg.f3dc5ac9ff98fac6327b057937fc820a.jpg

Holdfasts are often not attributable to a species and are called "Lichenocrinus" I think this is one, but it may be a columnal from the stellate stemmed Iocrinus. 

9.thumb.jpg.7048939b3d7e13671edfc2e21dcdd3da.jpg

I think this is another Lichenocrinus holdfast anchored to an Aspidopora bryozoan which is quite a common occurrence 

11.thumb.jpg.ede919ac5894e10e731095e9f72ccc5f.jpg

 

 

  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Just found this one.

In between the broken brachiopod bits is something interesting.

It's clearly echinoderm but what? A crionoid calyx plate or something from one of the more unusual echinoderms?

About 2 mm across.

10.thumb.jpg.f3af3e703e749698ea9e733cd458f40a.jpg

So thanks again to Mike @ClearLake for this and the specimens posted above. :fistbump:

Any help with some of the ids would be much appreciated.  

  • Enjoyed 1
  • I Agree 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Back to fossils sent me by the remarkable Ralph @Nimravis now, starting with this bryozoan covered brachiopod:

0.thumb.jpg.2b4356cb32cd4e35b86bc48a86bfcb5e.jpg

With the original label (not Ralph's). There was another brachiopod with it, also with a bryozoa covered shell, but that was clearly a spiriferid and probably Devonian.

This specimen is a spiriferoid Vinlandostrophia and because it's 'wings' are so acuminate, judging from the size and shape of it and counting the number of plications, I'm pretty certain that this is V. acutilirata. 

That suggest it is from the Liberty or Lower Whitewater Formations of the Cincinnatian or possibly their near equivalent in neighbouring States. 

0a.thumb.jpg.15df4cba5c2fd458f389001767855243.jpg

0b.thumb.jpg.a3cd4c942323c90d8b1fd55746576279.jpg

The bryozoa seems to have grown all over the anterior commissure which would have prevented the valves opening, so maybe this killed the brachiopod and the bryozoan colony continued to grow after the brachiopod died, or the growth is entirely post-mortem. 

0c.thumb.jpg.6e86d4a0ae44e1de62abba35281fa63c.jpg 

The side views also show considerable bryozoan cover :

0d.thumb.jpg.975c9690352ab76d1417104c3f0ad8b5.jpg 

0e.thumb.jpg.4c5e9f2ed1f4ef3d3f2d0c9f844192ab.jpg

Close up of the beak area :

0f.thumb.jpg.960a5148caf0b05730e5bedba924ecdf.jpg

 

 

 

 

  • Enjoyed 2

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

I don't know what the encrusting bryozoans are. Atactoporella schucherti is a possibility, I suppose, but it doesn't quite fit.

There may even be more than one species.

0.thumb.jpg.08529172d9623e5f9dde4f05e6a750b2.jpg

1e.thumb.jpg.f5b5ab9426e5e494ac90ed11dbbea94f.jpg

1.thumb.jpg.75327e8407ae54ad1966452c45c64e0c.jpg

 

1a.thumb.jpg.14405d0cada31919138d5e1b676cbb33.jpg

Some parts seem smoother :

1b.thumb.jpg.f1a0c34582244e1edac7077eb12def11.jpg

And others seem to have a star shape :

1c.thumb.jpg.5c8f43464a851ea531fa16e7d5ab7ff4.jpg

And there are a couple of really small colonies :

1d.thumb.jpg.d93fb023a050ab52933007f14249c4b6.jpg

 

 

  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Back to the roadcut at Southgate Hill, St. Leon, Indiana, now, and here is a small specimen of the rugose horn coral Grewingkia canadensis which is great as I have a nice little collection from this location, courtesy of Ralph, but hadn't received one of these before. Though I love brachiopods, I really like to have specimens of the creatures they shared their environments with and this species of coral was on my bucket list for a while. 

The formations at this site are near the top of the Cincinnatian and include the upper part of the Arnheim, the Waynesville and Liberty and the lower bit of the Whitewater. 

 0.jpg.df15571371b7a182d59696c5f49b2a94.jpg

There are some bryozoans, as usual, some seem to have been growing on the sides of the coral and some stuck to the calice during preservation along with a fragment or two of brachiopod shell. 

0a.jpg.20ad6b8346325454cb891c9033c6f169.jpg

0b.jpg.0f1c581123d8dc398f94329151318a94.jpg

This coral often seems to have a ridge on one side, giving it an almost tooth-like appearance :

0c.jpg.8132e7dee7e0c7058501770cffea5a10.jpg

0d.jpg.cf4ed2fae910a3b051e55e22a18e858a.jpg

0e.jpg.3dd39fdd9b16b9f47bf2dc5080cec48f.jpg

0f.jpg.f2d8b2d21d16fb2d87e2aeea10d0bb87.jpg

Very fine striations

0g.jpg.64ccdc862220e0fc4e125768f55b3152.jpg

 

 

  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Nice recent posts Adam! I have a soft spot for Grewingkia canadensis. The species was the first horn coral that I found in the Ordovician. They were common at the road cut I was visiting, but I remember my excitement as a new fossil hunter when finding my first. Thanks for bringing back fond memories! 
 

Bryozoans tend to encrust everything in the Ordovician don’t they?! And they are more than a little difficult to identify; for me at least. I do like the little critters though. It amazes me the varieties they can come in and can be mounding, encrusting, branching, etc.

  • I Agree 1

The good thing about science is that it's true whether or not you believe in it.  -Neil deGrasse Tyson

 

Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy)

Link to comment
Share on other sites

1 hour ago, FossilNerd said:

Nice recent posts Adam! I have a soft spot for Grewingkia canadensis. The species was the first horn coral that I found in the Ordovician. They were common at the road cut I was visiting, but I remember my excitement as a new fossil hunter when finding my first. Thanks for bringing back fond memories! 
 

Bryozoans tend to encrust everything in the Ordovician don’t they?! And they are more than a little difficult to identify; for me at least. I do like the little critters though. It amazes me the varieties they can come in and can be mounding, encrusting, branching, etc.

Yes, I'm happy with this coral. Did you find any big Grewingkia, Wayne? They can get pretty huge for Ordovician horn corals. 

I also agree that bryozoans are very difficult to id, though I like to have a go, sometimes. 

The ones on this coral I will leave for now, as I have several formations to choose from and I'm not sure if some of them are encrusters or not. 

But here they are :

1.jpg.0ef613c00656e52d437b55f6fff6901e.jpg

1f.jpg.fe8c8b9792aae84e536c70c45537c2f7.jpg

 

1d.jpg.89b71ea32aa5b5d606adf7155522a20e.jpg1g.jpg.7142a713790c0afbd15fa851a77fae70.jpg

1c.jpg.77b14282eca7b9357034fdeea968ac23.jpg

This one looks like a volcano and is growing on the coral :

1a.jpg.2384473f2d1554cfe8e6ee3cab7ec69e.jpg

1b.jpg.6f5f137919ffe8090eec6348d8d855a7.jpg

I'm not sure if this is the horn coral or a bryozoan on the edge :

1e.jpg.01a6672633e1a98925d9661d8ded5747.jpg

 

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Here's two brachial valve interiors from Hebertella occidentalis.

1.thumb.jpg.cbc4b1c2f794f28b6487cd1f412b2875.jpg

1a.thumb.jpg.aa8786c2a3003db13d80fb6dbda5a08d.jpg

1b.thumb.jpg.e812c35fe5677f3706e7fae91b670e91.jpg

1c.thumb.jpg.4225d891a146402c21f7d1db047e7530.jpg

1d.thumb.jpg.5c8e2c74390beb385e94152ccebe2949.jpg

And the anterior edge showing the sulcus :

1e.thumb.jpg.cb0cd6ec5cee44b3b0e25a741d804666.jpg

Now to check with the microscope to see what else is in this matrix! 

  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

17 hours ago, Tidgy's Dad said:

Did you find any big Grewingkia, Wayne? They can get pretty huge for Ordovician horn corals. 

No nothing exceptionally large. I think my largest is somewhere in the range of 2-3 inches (5-7.5 cm), if memory serves me correctly. I'll look when I get home this afternoon. 

  • Thank You 1

The good thing about science is that it's true whether or not you believe in it.  -Neil deGrasse Tyson

 

Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy)

Link to comment
Share on other sites

Lots of fascinating little bits and pieces in the matrix. 

The square crinoid columnals are Xenocrinus baeri which suggests this rock is from the Liberty Formation. 

The straight bit of bryozoan with the parallel, but staggered rows of elongated zooecia near the middle of the picture is Stictopora emacerata, I think. Is that an ostracod above it? To the right is a large fragment of maybe Batostoma sp. with larger openings and the other ramose bryozoan bits look like Bythopora reticulata to me.

0.thumb.jpg.b7316a946024645a92f3377fd6a95f2b.jpg

More Xenocrinus baeri, brachiopod shell fragments, Bythopora and what about the bryozoans that wifey describes as like strawberry skin with seeds ? Another species of Bythopora? There are a couple of different ones in the Liberty. 

1b.thumb.jpg.98e78ab39a2a985b2f449c3e8e3cf4b5.jpg

1c.thumb.jpg.62e21087c81ad800bdf0f274d52fbd75.jpg

1d.thumb.jpg.955199b935e91a8688073a50f901aa9f.jpg

1e.thumb.jpg.44c3da2cd4032b7832115aaff78fe5bf.jpg

1h.thumb.jpg.0a28dfb8cd6372b4045a307b4baee06b.jpg

1g.thumb.jpg.0e15f6941166878fca7d7c4f0073d340.jpg

Bythopora, I think.

2.thumb.jpg.c047f1838ca5e2183066907f456aea1b.jpg

2a.thumb.jpg.b059e945ce120e2aa0f9897ed379400d.jpg

6.thumb.jpg.d878981d68e967971aea271c22d62047.jpg

A tiny Zygospira modesta in this piece

3.thumb.jpg.5776ef16d0f8d2f8d86f007c8c6dbdcb.jpg

Batostoma fragments? 

4.thumb.jpg.bd3ec98f04d4ae4a911b0605005dc0b4.jpg

4a.thumb.jpg.c6d1eead76e1d85bd8025b0308b89cea.jpg

4b.thumb.jpg.08cad8f5d4f03d180232f1292f85cf42.jpg

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

5.thumb.jpg.47b3d374a86bc070d86cd8afdb8a1cf5.jpg

6a.thumb.jpg.404294ff6cd981cad9aa146c82e8ac48.jpg

7.thumb.jpg.7f7ba5b5aeed04f5468119795194a37f.jpg

A slightly larger Zygospira

8.thumb.jpg.0a148d73037f39aa125b6c3dfefca947.jpg

And another that's only 2 or 3 mm. 

8a.thumb.jpg.7a7b9b61dc1a623513f40eebe0218628.jpg

Xenocrinus baeri

9.thumb.jpg.1538d9ce5218a358b6a3f7a70000a47b.jpg

9a.thumb.jpg.342f560e04cd232c9745463f3d6534dd.jpg

 

Very interesting mystery bryozoa with overlapping tubes in straight lines arranged diagonally to the neighbouring line. 

1x.thumb.jpg.182ff9b5534c64eda0a28a5059422ee8.jpg

  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

Some Zygospira modesta free of matrix so they could be from any of the formations occurring at Southgate Hill. I love this species which ranged throughout the Cincinattian and I have specimens from several formations in Indiana, Ohio, Kentucky and Ontario. 

1a.thumb.jpg.053700c6dd03509c120485999365191b.jpg

I'll just show a few piccies of the largest and smallest specimens now.

The biggest first :

1b.jpg.777c540494da1a5a3fe1871af1ad7bd7.jpg1c.thumb.jpg.14e102257ee5d7f7705b652b31659419.jpg

1d.thumb.jpg.90020215129b715d37b1ef41e3e56e17.jpg1e.thumb.jpg.043dee3af1d51a00f226972ccfd5510c.jpg1f.thumb.jpg.eea52a309ea539609d217f62f4477454.jpg1g.thumb.jpg.dc1a9a7fc3be97947c18fd87ca86b2ba.jpg

And the tiniest one :

2.thumb.jpg.9ad62bfb8169e85a292c5903b82c574c.jpg

2a.thumb.jpg.4e2f545520ce88898b02a800c38938bc.jpg

  • Enjoyed 1

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

There was also a single, lonely rhynchonellid among all those Zygospira. So now i can put it with others from this locality for company. 

This one could be Hiscobeccus capax, but it's a little big at 2 cm, about maximum size for Hiscobeccus,  and the reticulate pattern where the growth lines cross the ribs make me think this is more likely Lepidocyclus perlamellosum. It has part of a valve of another specimen stuck to it. 

1.jpg.c7875052ca79de39db1f7280353636a9.jpg1a.jpg.80aa9f1e82741b26547ac374f9c7e54f.jpg1b.jpg.10471577be5cc849322cb3b9ef8226ab.jpg1c.jpg.4a95b3b84aa88652f58239ff9150152c.jpg

1d.jpg.928c161c765f74fc622dff77c8f9193a.jpg

1e.jpg.30c049ae47820781dd6c15e95c06ed82.jpg

Fine detail :

1f.jpg.23742bca8aff34c3666d9aa0cc95546d.jpg

1g.jpg.646dc82690dcab85a3f9faed85e2ff9f.jpg

Beak :

1h.jpg.e1fa023d9666473e8cfaa5bc06df64b0.jpg

Anterior commissure :

1i.jpg.75de1328efddc0ea77c6e7f6cf2576ee.jpg

1j.jpg.133980ec5fd8356a9620ad979afa6b6e.jpg

 

 

  • Enjoyed 3

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

I’m fond of Zygospira myself Adam. Cute little buggers! :wub:

  • I Agree 1

The good thing about science is that it's true whether or not you believe in it.  -Neil deGrasse Tyson

 

Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy)

Link to comment
Share on other sites

Next a load of strophomenid brachiopods, still from Lawrenceburg. 

1.thumb.jpg.5326ab6985fa423cf53c83681a7d9e6b.jpg

Most of these are Strophomena planumbona. Oddly, they are all pedicle valves, brachial valves are not represented, though I have one or two in a previous hash that ralph sent me. I wonder if this is preservation bias or collecting bias. 

Here are some convex pedicle valve exteriors:

1a.thumb.jpg.923d44f9f3993c0bc5ff0aa846703166.jpg

1b.thumb.jpg.01e780b4cc1f3728251b7eec30c7758b.jpg

Nice bryozoan on this one and a bit of Cornulites, I think :

1c.thumb.jpg.c94abb3e547e17e5048daa8405d611fd.jpg

I could dig this one out, but it would take hours. Maybe later.............

1d.thumb.jpg.11f40723c967c43478a5d46890471a17.jpg

Pedicle valve interiors, a Flexicalymene thorax segment just above this first one, top right:

1e.thumb.jpg.68dc59481660dc3eae1b8bc145f68d54.jpg

And a Flexicalymene cephalon above this next one: 

1f.thumb.jpg.9fab4d2fa4f99539c0b710d548250831.jpg

1g.thumb.jpg.897aefc36becad0adeab3aaff45f04cb.jpg

1h.thumb.jpg.d8f02ae5db2a9ccd677c505882841dc9.jpg

1i.thumb.jpg.0d95e06e9446f7f901a2bdbdf3dc50ae.jpg

1j.thumb.jpg.f2719459551c223218a65c5dde9aaa02.jpg

And in the one below, is that a trilobite hypostome, the Millenium Falcon or something else in the top left? 

1k.thumb.jpg.f52e7e846b53fcd714cdf9d2a4a32adf.jpg

1l.thumb.jpg.3575063f558d83da94ac9507ed3d913a.jpg

 

 

  • I found this Informative 1
  • Enjoyed 3

Life's Good!

Tortoise Friend.

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

Link to comment
Share on other sites

The other, smaller strophomenid in these pieces is Eochonetes clarksvillensis.

Here are a couple of pedicle valves :

 1.jpg.915ecb4ca1843436bf773b520f2b30fe.jpg

1b.jpg.43cf4ebc898553aafe8e9d8b36c129e0.jpg

  A pedicle valve interior :                                                                                         1e.jpg.f212266fb76c4ae448ab78e845a6bd79.jpg       

A close up of the interior valve detail:

0.jpg.e3fe734840cbb4877a21148d83687f32.jpg                                                                                           A concave brachial valve:                                                                                                                                                                                                                         1d.jpg.a5f46941b85ef5cb8582f805d74f69e0.jpg               

And a bit of another :

0a.jpg.749b054240bc9514b3d2769d198f9492.jpg                                                                                       And a pair of brachial valve interiors 

1a.jpg.d545d9b3f8eb714ebfb4265475fee026.jpg

1c.jpg.8e83f4032c239a74fb46f974ddcc2bd1.jpg

Next, let me have a look at what other goodies are in the matrix............................

  • I found this Informative 1
  • Enjoyed 1

Life's Good!

Tortoise Friend.

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