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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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I would be very grateful for any help regarding ids of these tiny oddments found in a matrix piece from the Early Devonian Helderberg Group, Kalkberg Formation of the Rickard Hill Road cut, Schoharie, New York state. The piece contains four really nice brachiopods, the horn coral Enterolasma strictum and a lot of tiny crinoid ossicles. Perhaps, in strict alphabetical order, @Darktooth @Fossildude19 @Jeffrey P@Misha or @Nautiloid might be able to throw some light on them? Thank you. This first one seems to be encrusting along the growth lines of large, flat specimen of Discomyorths oblata. Could it be a cornulitid of some sort? About 2.5mm long. This first picture seems to show it as pointy, but if you look, the wider end is actually sort of horseshoe shaped ans seems to have an opening infilled with sediment. It seems to show growth lines. The second specimen I thoght might be a tentaculitid, but now I'm leaning towards a gastropod? Note the very fine striations. About 3mm. What about these, please? Some are clearly stemmed echinoderm ossicles, but is that a tiny lingulid. Are there ostracods? These are all only a millimetre or two across. These last two may be burrows? A white one: And a darker one: Finally, tis nice to know they had McDonalds in New York back in the Early Devonian. Thanks to everyone for looking and for any assistance.
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Pentamerid Brachiopods from the Kalkberg Formation
Jeffrey P posted a gallery image in Member Collections
From the album: Lower Devonian
Machaeraria formosa (Pentamerid brachiopods, both valves) Lower Devonian Kalkberg Formation Helderberg Group Leesville, NY.- 1 comment
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Costistrophonella from the Lower Devonian Kalkberg Formation, N.Y.
Jeffrey P posted a gallery image in Member Collections
From the album: Lower Devonian
Costistrophonella sp. (Strophomenid brachiopods) Lower Devonian Kalkberg Formation Helderberg Group Interstate 88 road cut Schoharie, N.Y.- 1 comment
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Hello, friends. This specimen comes from the Catskills, New York and is from the Helderberg Group, Lochkovian or Lowermost Early Devonian in age. It could be from Becraft Mountain. It's not a rhynchonellid, it's too flat and there's no notable fold or sulcus. It develops second second order costellae half way toward the anterior margin : I have a couple of not very convincing thoughts but would be very interested in your opinions. Thank You.
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Looking to identify this Early-Devonian (Helderberg) Coral
FossilRPalace posted a topic in Fossil ID
Hello everyone, I've been working on extracting this piece of coral from the Rock Cut Quarry, located in Syracuse, New York. The part of the quarry wall this piece came out of is part of the Helderberg Group, sitting below the Onondaga Formation. I was looking forward to see if anyone had some input on identifying the species of coral. I believe its Favosites sphaericus. Cross-section: Top close-ups:- 6 replies
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From the album: Nautiloid’s Trilobite Collection
Kosovopeltis pompilius Lower Devonian Helderberg Group Kalkberg Formation Schoharie, NY© Owen Yonkin 2021
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Cluster of Eatonia (Rhynchonellid) Brachiopods
Jeffrey P posted a gallery image in Member Collections
From the album: Lower Devonian
Eatonia medialis Rhynchonellid Brachiopods (matrix 5 inches across) Lower Devonian Kalkberg Formation Helderberg Group Schoharie, N.Y.- 3 comments
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From the album: Lower Devonian
Platycerid Gastropods (3/4 inch wide) Lower Devonian Kalkberg Formation Helderberg Group Schoharie, N.Y.- 2 comments
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From the album: Lower Devonian
Macropleura macropleura Spiriferid Brachiopod (3 inches wide) Lower Devonian Kalkberg Formation Helderberg Group Schoharie, N.Y.-
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From the album: Lower Devonian
Cryptonella exima Terebratulid Brachiopod (less then 3/4 inch tall) Lower Devonian Kalkberg Formation Helderberg Group Schoharie, N.Y.-
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From the album: Lower Devonian
Megakozlowskiella perlamellosa Spiriferid Brachiopod (1 1/2 inches wide) Lower Devonian Kalkberg Formation Helderberg Group Schoharie, N.Y.-
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From the album: Lower Devonian
Paciphacops logani Phacopid Trilobite (molt) Thorax and pygidium (almost 1 1/4 inch tall) Lower Devonian Kalkberg Formation Helderberg Group Schoharie, N.Y.-
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Dalmanitid pygidium from the Coeymans Formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Dalmanitid pygidium, possibly Odontochile micrurus Lower Devonian Helderberg Group Coeymans Formation© Owen Yonkin 2021
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Meristella Brachiopods from the Lower Devonian Kalkberg Formation, N.Y.
Jeffrey P posted a gallery image in Member Collections
From the album: Lower Devonian
Meristella sp. (Spiriferid brachiopods) Lower Devonian Kalkberg Formation Helderberg Group Interstate 88 road cut Schoharie, N.Y.- 1 comment
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From the album: Lower Devonian Helderberg Group in Eastern NY
Tentaculites gyracanthus Upper Silurian/Lower Devonian Helderberg Gr. Manlius Fm. Albany Co. NY Collected 6/27/19-
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From the album: Lower Devonian Helderberg Group in Eastern NY
Rocks containing mainly Tentaculites gyracanthus Upper Silurian/Lower Devonian Helderberg Gr. Manlius Fm. Albany Co. NY Collected 6/27/19-
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I know this trip happened a while ago, but I’ve been pretty busy as of late finishing up the school year and such and haven’t had a chance to make a trip report. Hopefully y’all find this interesting.
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Gastropods: Diaphorostoma depressum Platyceras spirale? Tremanotus profundus (very flattened specimen).
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I found this fossil last weekend at the road cut along Rickard Hill Road in Schoharie, New York. It is from the Lower Devonian Kalkberg formation. The surface has no texture at all. The fossil has a thickness of about 1mm. Originally I thought it was less than 2 inches long and wide but I was able to prep out the rest of the fossil due to the softness of the matrix. It is about 3 inches wide and long.
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Sunday was the warmest and most pleasant day so far this spring. I decided on a solo venture up north to Schoharie County, N.Y. My destination was two road cut sites which expose the Lower Devonian Kalkberg Formation, part of the Helderberg group. The primary attractions here are the abundance and diversity of fossils, and very good preservation. The first road cut site is immense and I spent about three hours surface collecting. Most of my finds were brachiopods, some very nice specimens of Leptanena rhomboidalis, Discomyorthis oblata, Meristella, sp., Costistroponella sp., and a variety of Rhynchonellids. Also found a gastropods internal mold, an Enterolasma strictum, a rogose coral, and a 8 by 7 inch Favosites helderbergiae, a tabulate coral colony.
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Well detailed spiriferid brachiopod valve from the Kalkberg formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Howellella cycloptera Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Road Schoharie, NY Collected 5/31/20-
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From the album: Lower Devonian Helderberg Group in Eastern NY
Diaphorostoma depressum Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Road Schoharie, NY Collected 5/31/20-
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From the album: Lower Devonian Helderberg Group in Eastern NY
Dalmanites pleuroptyx? Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Road Schoharie, NY Collected 5/31/20-
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Kettneraspis from the Kalkberg Formation, Schoharie County, New York
Jeffrey P posted a gallery image in Member Collections
From the album: Lower Devonian
Kettneraspis tuberculata Odontopleurid Trilobite Lower Devonian Kalkberg Formation Helderberg Group Schoharie Co., New York Prepared by Ptychodus04 ID Help- Piranha-
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