Tag: Pennsylvanian
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Fossil Friday #113: Alethopteris serlii
This is the “Fossil Friday” post #113. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! Alethopteris, in its many forms, is a…
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Mazon Monday #116: Coprinoscolex elliogimus
This is Mazon Monday post #116. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. —————————————————– Coprinoscolex elliogimus is an animal long referred to by collectors as the “Leech”. More recent research now shows it to be an echiuran, which are commonly called “spoon worms”. They are deposit feeders living in shallow water, in…
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Fossil Friday #112: Coprinoscolex elliogimus!
This is the “Fossil Friday” post #112. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! After a long week, it’s time for…
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Mazon Monday #115: Crenulopteris acadica
This is Mazon Monday post #115. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. —————————————————– Crenulopteris acadica is one of the most common flora fossils found in the Mazon Creek biota. Some of the localities seem to be absolutely full of it. The fossils can range in size from a few inches to…
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Fossil Friday #111: Rhabdoderma exiguum
This is the “Fossil Friday” post #111. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! For this week’s Fossil Friday, we have…
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Mazon Monday #114: Codonotheca caduca
This is Mazon Monday post #114. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. —————————————————– Codonotheca caduca was named by Elias Howard Sellards (1875 – 1961). He was a paleontologist, geologist, and anthropologist. The Texas State Historical Association has a nice summary of his career, which spanned almost 60 years. SELLARDS, ELIAS HOWARD (1875–1961).Elias…
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Fossil Friday #110: Sea Cucumber from Mazon Creek
For this Fossil Friday, we have a very sweet sea cucumber (Achistrum sp.) from Mazon Creek. For more information, we looked at these echinoderms back in Mazon Monday #29. Holothurians appeared in Andy Hay’s Creature Corner in May 1986.
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Mazon Monday #113: Spring 2022 Braceville Field Trip Report
This is Mazon Monday post #113. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. —————————————————– Braceville Field Trip (Mazon Creek) May 14th and 15th by Keith Robitschek This spring’s field trip to the Braceville spoil pile started on Saturday with a warm cloudy day with a chance of rain. We had about five…
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Fossil Friday #109: Tully Monster!
Today, we have a Tully Monster that got a second chance. It was found by ESCONI member Jeremy Zimmerman a while back deep in the wilds of Pit 11. Someone had hammered it many years ago, thought it was a blank and left it to the elements. Jeremy picked it up, made it part of…
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Mazon Monday #112: Concretion Shape from 1952
This is Mazon Monday post #112. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Lately, we’ve been getting a bunch of questions about concretion shape, probably due to the Braceville field trip this past weekend. It’s an age old question that repeats again and again. Back in March 1952, Stevens T. Norvell, a…
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Fossil Friday #108: Mazopherusa prinosi from Braceville
To help lead into the Braceville field trip this weekend, we have one of the iconic species from “Worm Hill”. The Braceville spoil pile is known for jellies, clams, the occasional shrimp, partial plants, and worms… lots of worms. ESCONI member Maarten Vonhof sent us photos of what may be the best specimen of Mazopherusa…
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Mazon Monday #111: Leaves and Stems with a George Langford Inscription
This is Mazon Monday post #111. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Back in Mazon Monday #51, we looked at the book “Leaves and Stems” by Raymond E. Janssen. From the time it was published in 1939 by the Illinois State Museum until George Langford’s first book was published by Esconi…
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Fossil Friday #107: Annularia from Vigo County, IN
This is the “Fossil Friday” post #107. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! This week’s Fossil Friday is again Annularia. …
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Mazon Monday #110: Trip Report: Danville Shale Pile April 23rd, 2022
This is Mazon Monday post #110. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Back on April 23rd, 2022, ESCONI held our 4th field trip to a shale pile just outside of Danville, IL. The trip was a huge success, although a little hot at nearly 87 degrees. We were honored by the…
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Fossil Friday #106: Palaeoxyris prendeli from Central Illinois
This is the “Fossil Friday” post #106. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! This week’s Fossil Friday is a twofer……
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Mazon Monday #109: Pecopteris notata
This is Mazon Monday post #109. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Today, we are looking at one of the rarer forms of Pecopteris, namely Pecopteris notata. This variety doesn’t show up in a few of the Mazon Creek plant books, but it can be found in the new “A Comprehensive…
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Fossil Friday #105: Annularia annulariafolius
This is the “Fossil Friday” post #105. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! A gorgeous Annularia annulariafolius is our Fossil…
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Mazon Monday #108: Mariopteris decipiens
This is Mazon Monday post #108. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. In general, Mariopteris, a seed fern, is fairly rare across all the Mazon Creek terrestrial localities. Mariopteris tends to have ornate pinnules compared to other species of seed feed like Alethopteris, Neuropteris, and Odontopteris. The species we are looking…
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Fossil Friday #104: Dasyleptis brongniarti
This is the “Fossil Friday” post #104. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! This week, we have a Mazon Creek…
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Mazon Monday #107: Book Inscription in Nitecki’s “Mazon Creek Fossils”
This is Mazon Monday post #107. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Back in Mazon Monday #18, we posted some interesting book inscriptions from the Langford Mazon Creek books. The highlights were Bill Allaway’s book owned by Dave Carlson and John McLuckie’s book owned by Jack Wittry. This week, I received…
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Fossil Friday #103: Mariopteris sphenopteroides
This is the “Fossil Friday” post #103. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! Well, we’ve made it to another Fossil…
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Mazon Monday #106: Video for Arjan Mann’s “Revisiting the exceptional tetrapod fauna of Mazon Creek, Illinois”
This is Mazon Monday post #106. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Back in November 2020, Arjan Mann spoke at the ESCONI General Meeting about Mazon Creek tetrapods. Due to some research that had yet to be published, we couldn’t post the video of his excellent presentation, which was entitled “Revisiting…
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Fossil Friday #102: Kellibrooksia macrogaster x 3!
This is the “Fossil Friday” post #102. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! This week’s Fossil Friday is three specimens…
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Mazon Monday #105: Kellibrooksia macrogaster
This is Mazon Monday post #105. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Kellibrooksia macrogaster is a species of mantis shrimp (stomatopods). It was described by Frederick Schram in 1973. Frederick Schram described many of the shrimp of Mazon Creek. We had a nice one for sale at the ESCONI Gem, Mineral,…
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Fossil Friday #101: Mazon Creek Aquatic Plants
This is the “Fossil Friday” post #101. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! The last section of “A Comprehensive Guide…
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Mazon Monday #104: Mid-century Mazon Creek
This is Mazon Monday post #104. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. We recently received an interesting link from ESCONI member Kristi Overgaard of a post on the Geology World group on Facebook. The post was by James Anderson and it described an transaction with Dr. Wilbur Hoff’s son. Dr. Hoff…
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Fossil Friday #100: Lyginopteris hoeninghaus
This is the “Fossil Friday” post #100. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! Wow, 100 posts… we are no over…
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Mazon Monday #103: Asterophyllites equisetiformis
This is Mazon Monday post #103. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Today, we look at another part of the plant Calamites. Recall that paleobotany uses form genera as a strategy to identify plant parts. If you aren’t familiar with the concept, there is a good explanation in the “Keys to…
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Fossil Friday #99: Tully Monster!
This is the “Fossil Friday” post #99. Expect this to be a somewhat regular feature of the website. We will post any fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Twitter hash tag for contributions from around the world! Our first Mazon Monday was about the…
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Mazon Monday #102: Eoscorpius carbonarius
This is Mazon Monday post #102. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Scorpions are very rare in the Mazon Creek fossil biota. Eoscorpius carbonarius was described by FB. Meek and A.H. Worthen in 1868. The paper was published in the America Journal of Sciences – “Meek, Fielding B. & A. H.…
