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Showing results for tags 'caithness'.
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Mammal tooth? Or tooth shaped stone?
kriysta posted a topic in Fossil IDHello! All! I am new here and ruthlessly in for identification help of any kind, I have tried figuring out how to identify whether I have found a Tooth or not! I have previously collected amber, large gem crystals, horse and sheep teeth a bit of the old castle, iron age pottery but this 'rock/tooth' has me going round in circles. Getting a little laugh at repeated searches for information about mammal teeth and I'm just left thinking I think it is a molar tooth it is pearly a grey/blue/pale putty colours. Weighs 9.3grams if I recall and it really resembles a tooth in form shape and markings..
Devonian Fossil fish or maybe not Devonian
Bobby Rico posted a topic in Fossil IDHi all I purchased this little fish (15cms ) for a bargain of £12. It is from Caithness in Scotland. I think is possible Gyroptychius but I am really in the deep water were it comes to fish. So any help will be much appreciated. cheers Bobby
Fossil hunting trip at Achanarras quarry, Caithness, Scotland
James_R_V posted a topic in Fossil Hunting TripsLast week I went upto Caithness hunting for fossil fish at Achanarras quarry. The rocks there formed at the bottom of a huge lake during the Devonian period 385 mya. Most of the fossils I found were incomplete with mostly the tails missing, but I was lucky enough to find a complete diplacanthus, and fragmented cheiracanthus murchinsoni, which I have managed to superglue back together.
Plant? Tree Bark? Or just really cool rocks?
JustineArt posted a topic in Fossil IDCan anyone ID these, please? Again found in Caithness. The textured stuff looks plant-like to me but I'm doubting my eyes and think they could just be really cool looking rocks!? I've Googled things like 'concretions' but I'm still none the wiser. The flat piece with the minerals running along the top fizzes with vinegar so I'm guessing it's calcite with a sparkle of pyrite. It was found beside the textured piece in pic #1 which seems to contain a pink tinted quartz (?) and pyrite? The big piece I'm holding aloft looks so like bark to me but I'm anxious of merely making assumptions.
Another Caithness fish fossil prepping complete.
James_R_V posted a topic in Fossil PreparationI have finally finished exposing another fossil fish from Achanarras quarry in Caithness, which I found in 2020. It took about 2 months to prepare using an dremel 290 engraver. It is a Pterichthyodes (turtle fish). It is mostly complete, although part of the left fin is missing.
My first attempt at prepping a fish fossil from Caithness.
James_R_V posted a topic in Fossil PreparationI have finally finished preparing a Fossil lungfish (Dipterus valenciennesi) I found at Achanarras quarry, Caithness, and I though I would share the result. It took me about month to prep it using a dremel 290 engraver. I am pretty chuffed at how it has turned out. I managed to preserve most of the details of the fossil including fin rays.
More fish fossils from Scotland.
James_R_V posted a topic in Fossil Hunting TripsIt has been a while I have posted anything on here so I thought I would share a couple of fossils I found over the past few months. The first fossil is one I found before lockdown at Achanarras quarry in Caithness. It is a complete Diplacanthus crassisimus fossil. It is species I have never found before.
Millerosteus minor Miller, 1858
oilshale posted a gallery image in Members Gallery
From the album: VertebratesMillerosteus minor Miller, 1858 Middle Devonian Eifelian Caithness Scotland Millerosteus minor (named after Hugh Miller, a Scottish geologist and paleontologist 1802-1856) was a small arthrodire placoderm, rarely exceeding 15cm. The extinct armored fishes known as placoderms make up what is considered to be the earliest branch of the gnathostome family tree -- the earliest branch of the jawed fishes. Arthrodires possessed jaws but no teeth. Razor-sharp bony dental plates formed sort of a beak and allowed to gnaw on prey. Arthrodires (“jointed nec
Coccosteus cuspidatus Miller, 1841
oilshale posted a fossil in FishesThe two most common fish in Achanarras are Coccosteus cuspidatus and Dipterus valenciennesi References: A Guide to Achanarras Fossils Volume 16: Fossil Fishes of Great Britain Chapter 6: Mid-Devonian fossil fishes sites of Scotland. Site: ACHANARRAS QUARRY (GCR ID: 351)
Pentlandia macroptera (TRAQUAIR, 1888)
oilshale posted a fossil in FishesGrammatically incorrect form: Pentlandia macropterus. Taxonomy from Challands & Blaauwen, 2016. Emended diagnosis from Challands & Blaauwen, 2016, p. 3: "A medium-sized dipnoan (up to 40 cm) in which the I-bones do not meet medially posterior to the B-bone. The B-bone is 1.2 times as long as it is wide. The paired C-bones are 1.7 times long as they are wide. There are two paired Y-bones that lie lateral to the I-bone and contact the operculum along with bone 4, the J-bone, and the X-bone. Only one suboperculum is present. The X-bone carries the bifurcation for the supraorbita
Palaeospondylus gunni TRAQUAIR, 1890
oilshale posted a fossil in Other ChordatesThe little fish, Palaeospondylus gunni, from the Middle Devonian of Achanarras, Caithness, is perhaps the most widely known of all problematical fossils. Ever since it was first described by Traquair in 1890, it has attracted the attention of a very large number of workers. Nevertheless, its affinities have not yet been convincingly demonstrated. The phylogeny of this bizarre fossil has puzzled scientists since its discovery in 1890, and many taxonomies have been suggested. Traquair and the majority of writers have considered Palaeospondylus to be related to Cyclostomes. However, other workers
Microbrachius dicki TRAQUAIR, 1888
oilshale posted a fossil in FishesReferences: Volume 16: Fossil Fishes of Great Britain. Chapter 6: Mid-Devonian fossil fishes sites of Scotland. Site: JOHN O'GROATS, CAITHNESS (GCR ID: 353) Long, J.: Origins of copulation - ancient Scottish fishes did it sideways, square-dance style.