Tag: calamites
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Mazon Monday #322: Asterophyllites longifolius
Asterophyllites longifolius like its sister taxon Asterophyllites equisetiformis (see Mazon Monday #103), formed part of the foliage of the giant horsetail-like plant Calamites. Both species are known from Mazon Creek, but while A. equisetiformis is common, A. longifolius is a very rare. One distinguishing characteristic of A. longifolius is that the leaves are longer than…
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2026 ESCONI Gem, Mineral, and Fossil Show – Preview #16: Calamostachys Cone
A the rarer side, we have a nice Calamostachys cone for preview #16. Calamostachys was one of the cones of Calamites (see Mazon Monday #99). Less than 6 days left until the show… how quickly time flies!
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Fossil Friday #299: Annularia sphenophylloides
This is the “Fossil Friday” post #299. Expect this to be a regular feature of the website. We will post fossil pictures you send in to esconi.info@gmail.com. Please include a short description or story. Check the #FossilFriday Bluesky/Twitter hash tag for contributions from around the world! Today, we have another beautiful contribution from George Witaczek. This time…
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Fossil Friday #267: Annularia radiata
This is the “Fossil Friday” post #267. 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! —————————————————– We have a sweet little Annularia…
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Fossil Friday #258: Asterophyllites equisetiformis from Braceville!
We have another Calamites related specimen for this week’s Fossil Friday. Asterophyllites equisetiformis was part of the foliage for Calamites. Remember Calamites is an extinct species of modern day horsetails, which belong to the genus Equisetum. During the Carboniferous, they were quite diverse, with some forms growing very tall, reaching 30 meters (98 feet!). They…
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Fossil Friday #257: Calamostachys tuberculata Cone from the Mazon River
This is the “Fossil Friday” post #257. This is a 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 hash tag #FossilFriday on Twitter/X and Bluesky for contributions from around the world! —————————————————– We have a gorgeous Calamostachys tuberculata…
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Mazon Monday #245: Annularia annulariaefolius
This is Mazon Monday post #245. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Annularia annulariaefolius represents foliage from a shrub-like sphenophyte. It was described as Lycopodites annulariaefolius in 1870 by Leo Lesquereux. Lesquereux was a swiss bryologist, who lived from 1806 until 1889. In 1970, he wrote “Report on the Fossil Plants…
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Fossil Friday #225: Annularia inflata
This is the “Fossil Friday” post #225. 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! —————————————————– Today, we have a very colorful…
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Fossil Friday #220: Annularia inflata
Annularia inflata is out Fossil Friday for this week. We chose it to commemorate the 4th of July holiday. It’s pinnules resemble a firework display. Annularia inflata is the foliage of Calamites. It’s related to modern day horsetails. Find out more here Mazon Monday #60 and Mazon Monday #94.
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Fossil Friday #205: Bifurcated Asterophylites from Indiana
This is the “Fossil Friday” post #205. 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! —————————————————– Asterophyllites equisetiformis is a part of…
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Fossil Friday #204: Annularia inflata
This is Mazon Monday post #204. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Thanks! Fossil Friday is here with a beautiful Annularia inflata. A. inflata is the foliage for Calamites, a genus of extinct horsetail “trees”. They lived in the coal swamps of the Carboniferous and Permian periods and provide much of the…
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Fossil Friday #196: Calamostachys from Mazon Creek
This is the “Fossil Friday” post #196. 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! Today, we have another Mazon Creek plant…
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Fossil Friday #194: Asterophyllites equisetiformis from Indiana
This is the “Fossil Friday” post #194. 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! Today, we have a nice Asterophyllites equisetiformis…
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Mazon Monday #60: Annularia inflata
This is Mazon Monday post #60. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. —————————————————– This week, we are looking at a species of Annularia. Annularia is actually the foliage of a plant called Calamites. Calamites is classified as a Sphenopsid, which is a primitive vascular plant characterized by jointed ribbed stems and small…
