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Showing results for tags 'early devonian'.
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The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
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- cordillera cantabrica
- cryptoschisma schultzii
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- cordillera cantabrica
- cryptoschisma schultzii
- erfoud
- reedops
- goniatites
- panenka
- assa
- draa
- yeraifa formation
- assie de nkhaila member
- cuninulus
- cuninulus assaensis
- ferronia subspeciosa
- ferronia
- aguion formation
- ranees group
- plicathyris ezquerrai
- plicathyris
- area de bonar
- early devonian
- lower devonian
- lochkovian
- pragian
- emsian
- bryozoa
- tabulata
- crenulipora
- morocco
- crenulipora difformis
- leptotrypella
- kalkberg
- fenestella
- fenestellid
- helderberg group
- fenestrata
- helderberg
- kalkberg formation
- new york
- schoharie
- usa
- gypidula
- pentamerid
- gypidula galeata
- pentamerida
- trepostome
- trepostomata
- thamniscus
- polypora
- polypora lilia
- discomyorthis
- atrypa
- discomyorthis oblata
- atrypa reticularis
- orthid
- orthida
- atrypida
- atrypid
- rhynchonellid
- rhynchonellida
- uncinulus
- athyrid
- uncinulus pyramidatus
- athyrida
- meristella
- concinnispirifer
- meristella laevis
- sprifer
- spiriferid
- speriferida
- costellispirifer
- costellisprifer concinnus
- bivalve
- bivalvia
- mollusca
- mollusc
- colorado quarry
- becraft
- becraft mountain
- becraft formation
- schizophoria
- schizop
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Found digging out in the needmore shale of WV so early to mid Devonian. It’s broken but I believe the full thing to be shaped kind of like the bendy part of a bendy straw when stretched out. So a crinkled tube that’s been squashed a bit by geological forces. Texture on it is a three dimensional crosshatch, kind of textile-like. My first guess was some kind of bryozoan, but I honestly don’t know
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- needmore formation
- early devonian
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Hello, I would like to know whether or not this is a fossil on top of this rock? Is it just weathering? It is from my yard in middle Tennessee.
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- tennessee
- early devonian
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From the album: Trilobit 2
Trilobite for example Cavetia sp Phacops Acastoides Leonaspis Kettneraspis Diademaproteus....-
- steinsberg
- rupachtal
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