#PapersInPalaeontology
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thepalass.bsky.social
A new otophysan from the Tlayúa Quarry, Mexico: a North American clue to the early diversification of this group of freshwater fishes onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Fossil fish on a reddish background matrix. Holotype of Sooinichthys varii (IGM 14347), photograph under UV light. Scale bar at lower right is 5 mm.
December 12, 2025 at 9:29 PM
thepalass.bsky.social
New fossils of Acrochordus (Serpentes, Caenophidia) from the Middle Miocene of Kutch, western India: quantitative taxonomic evaluation & palaeoclimatic insights onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Top left: Photograph of a mid-trunk vertebra from a Miocene fossil aquatic snake: Acrochordus sp. (BSIP 41786). Top right: a line diagram of a similar vertebra in the same, anterior, view showing the placement of numbered landmark points used in shape analysis in this study (type 1 landmarks in yellow; type 2 landmarks in red). At the bottom is a morphospace plot showing the first two principal component scores of acrochordid vertebrae, distinguishing the new fossil material in red on the right.
December 2, 2025 at 4:32 PM
thepalass.bsky.social
The Paraprotopsyllidiidae: biodiversity, geographical distribution and taxonomic updates onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Photograph of a fossil insect set in a pale yellow, speckled rock matrix. Laopsyllidium daohugouensis (holotype NIGP205637). Scale bar in bottom left corner is 5 mm.
November 19, 2025 at 7:34 PM
thepalass.bsky.social
Mosaic morphology in Podocnemididae revealed by a new turtle from the Middle Miocene La Venta Biome, Colombia onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology @morphobank.bsky.social
Main image at the top: an artistic representation of two turtles on the beach of a shallow river, with water in the foreground. The turtles are reconstructions of the Miocene podocnemidad Shakiremys colombiana. Illustration by Juan Giraldo. Bottom right corner: two fossil images; on the left a shell of Shakiremys columbiana (paratype VPPLT-1721) showing the plastron in ventral view; on the right a dorsal view of a skull of the same species (holotype, VPPLT-1730). Scale bars below each specimen are 5 cm (shell) and 2 cm (skull).
November 18, 2025 at 9:34 PM
thepalass.bsky.social
An Upper Cretaceous arthropod assemblage from Villaggio del Pescatore (Campanian, Italy) & its implications for peri-Tethyan palaeobiogeography & palaeoecology onlinelibrary.wiley.com/doi/10.1002/... @macroecoevoale.bsky.social #PapersinPalaeontology
Top left: photograph of a fossil palaeomonid arthropod from Villaggio del Pescatore, Italy; the image in the bottom right corner has colours superimposed to illustrate the various features of the animal. Scale bar in the bottom right corner is 10 mm for both images. Specimen number: MCSNT 57057. Bottom left: a map of Italy, with the a region in the northwest shaded grey and enlarged on the right to show the location of the study area near Trieste.
November 18, 2025 at 9:22 PM
thepalass.bsky.social
New fossil fungi! A new species of Diplocladiella from the lower Holocene of Argentina: insight into the palaeoecological & palaeoclimatic history of the fossil genus Triporicellaesporites onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Top left: photographs of a vertical river bank showing the geological section studied, with a red arrow indicating holes from which samples were extracted. A close up shows the sampled section in more detail. Bottom left: a map of Argentina (in green) with a red dot indicating the approximate position of Doll Creek in Entre Rios Province. Top right: a single fossil conidium of Diplocladiella arambarriae (LAGEO-ARG-6585-1-AD-S2-07-E28/1); scale bar is 20 microns. Bottom right: vertical plot showing the geological age range of Diplocladiella species from the Paleocene at the bottom to the Pleistocene/Holocen boundary towards the top. Red lines show the ranges of four species, with Diplocladiella arambarriae at the top.
November 12, 2025 at 4:49 PM
thepalass.bsky.social
A new Early Triassic cyclidan crustacean from the Guiyang biota onlinelibrary.wiley.com/doi/10.1002/... - ecosystem recovery after mass extinction @morphobank.bsky.social #PapersinPalaeontology
Main picture is an artist's reconstruction of the Triassic fossil crustacean Yunnanocylus fortis, newly described from the Guiyan biota. The crab-like animal is shown on the sea bed. Inset in the lower left corner is an image of the holotype (CUGM 00359); scale bar in the lower left corner is 2 mm.
November 11, 2025 at 2:44 PM
pebblepupanna.bsky.social
#PapersinPalaeontology 🦕🦖
thepalass.bsky.social The Palaeontological Association @thepalass.bsky.social · Nov 10
Quantitative review of the systematic taxonomy, distribution & palaeoenvironmental preferences of the productid brachiopods Cathaysia & Paryphella onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology @paleodb.bsky.social @datadryad.bsky.social
A palaeogeographic map of the world in Permian times, showing the distribution of Cathaysia (red dots) and Paryphella (blue square) specimens. Underneath are specimens of four new brachiopod taxa. Clockwise from top left: Cathaysia plana, Paryphella yangshanensis, Cathaysia xiaojiangensis and Cathaysia striata. Scale bars under each image are 5 mm.
November 10, 2025 at 7:52 PM
thepalass.bsky.social
Quantitative review of the systematic taxonomy, distribution & palaeoenvironmental preferences of the productid brachiopods Cathaysia & Paryphella onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology @paleodb.bsky.social @datadryad.bsky.social
A palaeogeographic map of the world in Permian times, showing the distribution of Cathaysia (red dots) and Paryphella (blue square) specimens. Underneath are specimens of four new brachiopod taxa. Clockwise from top left: Cathaysia plana, Paryphella yangshanensis, Cathaysia xiaojiangensis and Cathaysia striata. Scale bars under each image are 5 mm.
November 10, 2025 at 7:48 PM
thepalass.bsky.social
New evidence of a European giant tortoise (Titanochelon richardi) from the Upper Miocene of the Vallès-Penedès Basin: taxonomic & phylogenetic implications onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology @morphobank.bsky.social
Two photographs of Titanochelon richardi fossils, a Late Miocene giant tortoise from the Valle Penedes Basin, NE Iberian Peninsula. Top left: skull (IPS62095a) in left lateral view, scale bar at lower left 2 cm. On the right: plastron (IPS62095l) in visceral view, scale bar (mid right) is 4 cm.
November 3, 2025 at 11:51 AM
thepalass.bsky.social
Re-evaluation of the Carboniferous tetrapod Asaphestera platyris with comments on the amniote fauna of the Joggins Formation, Canada onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology @morphobank.bsky.social
A photograph and line drawing interpretation of partial fossil skull in dorsal view, identified as the holotype of Asaphestera platyris (now considered nomen dubium). Scale bar at lower right of photograph is 1 cm.
October 31, 2025 at 6:09 PM
thepalass.bsky.social
A new long & narrow-snouted ichthyosaur illuminates a complex faunal turnover during an undersampled Early Jurassic (Pliensbachian) interval onlinelibrary.wiley.com/doi/10.1002/... #FossilFriday @morphobank.bsky.social #PapersinPalaeontology
Photograph of the holotype and only known specimen of the hauffiopterygian leptonectid, Xiphodracon goldencapensis (ROM VP52596) from Golden Cap, between Charmouth and Seatown, Dorset, UK. The skeleton is exposed in ventrolateral view. The skull has been fully prepared free of matrix whereas most of the skeleton is still in matrix. The left (upper) forefin has been prepared so that it is three-dimensionally preserved and projects upwards. Scale bar (lower left) is 20 cm.
October 10, 2025 at 1:38 PM
thepalass.bsky.social
Insights into reef evolution: the first sphinctozoan-dominated reef facies from the lower Katian (Upper Ordovician) of the Tarim Basin, China onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Artist's reconstruction of the Ordovician sphinctozoan–Archaeolithoporella reef community in Well ZG31, Tarim Basin, China. Box diagram shows the various types of organism in life position on the seafloor as well as a cross section into the sediment below showing buried specimens in section as they might appear in the fossil record.
October 1, 2025 at 1:37 PM
thepalass.bsky.social
An Eocene New World vulture (Aves, Cathartidae) from Mongolia onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
An Eocene New World vulture (Aves, Cathartidae) from Mongolia https://onlinelibrary.wiley.com/doi/10.1002/spp2.70041 #PapersinPalaeontology
September 30, 2025 at 11:15 AM
thepalass.bsky.social
The first pterosaur from the Bauru Group: an azhdarchid from the Upper Cretaceous of Brazil onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology @rv-pegas.bsky.social
Artist's life reconstruction of a pair of Galgadraco zephyrius gen. et sp. nov. (centre) in a late Maastrichtian environment, showcasing the palaeobiota of the Serra da Galga Geosite. Artwork by Matheus Gadelha.
September 24, 2025 at 12:29 PM
thepalass.bsky.social
Biostratigraphy & correlation of the Cambrian Thorntonia Limestone, southeastern Georgina Basin (Queensland, Australia) onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Selection of fossil images demonstrating the fauna of the Thorntonia Limestone, all to the same scale (scale bar in the centre is 1mm). Specimen identifcation by letter: (A) Bemella wiri, silicified shell; (B) Pelagiella madienensis, phosphatic steinkern; (C) Pelagiella deltoides, phosphatic steinkern; (D) Figurina sp., phosphatic steinkern; (E) Thontonites dowlingi holomeric columnal; (F) Edrioasteroid stereom fragment; (G) Allonnia sp.; (H) Hexactinellid spicule; (I) Chancelloriasp.; (J) Microcornus parvulus conch; (K, L) Chalasiocranos theloides; (M) halkieriid indet. cultrate sclerite; (N) Protowenella flemingi, phosphatic steinkern; (O) Chalasiocranos theloides; (P) Spicule; (Q) Microdictyon robisoni; (R, S) Monasterium opiki spines.
September 18, 2025 at 10:19 AM
thepalass.bsky.social
Mummified Palaeogene millipedes from southern France onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Two images of a fossil millipede (Blaniulidae; UM-ROQ1-500). On the left, a black and white SEM micrograph of the specimen; on the right a digital reconstruction in false colour highlighting different anatomical features. Scale bar in lower left corner is 500 microns.
September 13, 2025 at 10:43 AM
thepalass.bsky.social
Reproductive organs and fronds of Mesozoic seed ferns from the Middle–Upper Triassic Cañadón Largo Formation (Patagonia, Argentina) onlinelibrary.wiley.com/doi/10.1002/... #PapersInPalaeontology
Rock slab with fossil plant material, including the reproductive structure Umkomasia macleanii (white rectangle; on the right), and juvenile (black arrows) and adult (white arrows) Dicroidium hernandenzii fronds. CTES-PB 8125a. Scale bar at lower right is 10 mm.
September 12, 2025 at 10:44 AM
thepalass.bsky.social
Early elytrification of forewings of Palaeozoic cockroachoids onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
Photograph of fossil insect Poroblattina rotundata (CDUE A5-29): left forewing (10 mm x 3 mm), right forewing (9 mm x 4 mm), right hindwing, preserved size (6 mm x 4 mm). White scale bar (at bottom of photo) is 5 mm. Sketch in bottom right corner shows outline of wings.
September 4, 2025 at 11:31 AM
thepalass.bsky.social
New osteological characteristics identify the first stem sleeper goby (Gobioidei, Odontobutidae) from the upper Eocene onlinelibrary.wiley.com/doi/10.1002/... @datadryad.bsky.social #PapersinPalaeontology
At the top: a photograph of a fossil fish: Paralates chapelcornerensis (NHMUK PV P 76993a) lying on its side horizontally on a fine grained yellow/brown rock matrix. Scale bar in lower right corner is 5 mm. Middle: an artist's reconstruction of the same fish, anatomically accurate based on fossil material with colouring based on extant genus Micropercops and preserved pigmentation visible in one of the fossil dorsal fins. At the bottom: a map of the Isle of Wight, off the southern coast of England with the fossil locality near Ryde (on the northeastern coast of the island) marked with a yellow star.
August 27, 2025 at 3:05 PM
thepalass.bsky.social
A new sail-back ornithischian dinosaur from the Lower Cretaceous Wealden Group of the Isle of Wight & the origins of neural spine elongation in iguanodontians onlinelibrary.wiley.com/doi/10.1002/... #FossilFriday #PapersinPalaeontology
Artist's reconstruction of new iguanodontian genus and species Istiorachis chasei (MIWG 6643) stading in profile in a dried but clearly recently flooded landscape with large branches or fallen trees in the foreground and immediately behind, standing trees on the high bank further behind, and two pteradactyls flying in the distance to the upper right. Original artwork by James Brown.
August 22, 2025 at 10:12 AM
thepalass.bsky.social
Crocodyliform diversity of the Cretaceous Açu Formation, Potiguar Basin, Brazil: geographical distribution & palaeobiological implications onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
In the centre is a geological map of the northeast coast of Brazil showing the extent of the Acu Formation. The darkest shading shows the crystalline basement to the south, followed in a northerly direction by the Acu Formation, Jandaira Formation and post-Cretaceous formations in sequentially lighter shades. Around this are examples of the different morphotypes of crocodyliform teeth identified in this study. Clockwise from top left: morphotype 1A (UFRJ-DG 698-Rd; scale bar at lower left 1 mm); morphotype 1B (UFRJ-DG 697-Rd; scale bar at lower right 1 mm); morphotype 2 (UFRJ-DG 703-Rd; scale bar at lower left 1 mm); morphotype 3 (UFRJ-DG 700-Rd; scale bar at lower left 2 mm); morphotype 4 (UFRJ-DG 704-Rd; scale bar at lower left 1 mm).
August 20, 2025 at 12:43 PM
thepalass.bsky.social
A new species of Lophiomeryx from the Eocene of northern China & its implications for the early evolution of the family Lophiomerycidae onlinelibrary.wiley.com/doi/10.1002/... @morphobank.bsky.social #PapersInPalaeontology
Top left: map of the world centred on China, showing the distribution of Lophiomerycidae species. To the right: Fossil teeth of Lophiomeryx zongi (top) and Lophiomeryx angarae (bottom), brown-coloured photographs and grey labelled sketches. Bottom: phylogenetic tree of Lophiomerycidae species with a time scale at the bottom (Eocene on the left to Miocene on the far right; the Terminal Eocene Event with a green, vertical dashed line in the centre.
July 26, 2025 at 10:08 AM
thepalass.bsky.social
Recovering lost time in Syria: A new Eocene stereogenyin turtle from the Aleppo Plateau onlinelibrary.wiley.com/doi/10.1002/... @morphobank.bsky.social #PapersinPalaeontology
Top right: Map of Syria with Mediterranean Sea in blue on the left, highlighting the location of the study area north of Aleppo (boxed area, upper left). Bottom: Two images of the fossil turtle specimen (Syriemys lelunensis, GEGMRD 0002) in dorsal (left) and ventral (right) view. Scale bar in the middle at the bottom is 10 cm.
July 24, 2025 at 12:43 PM
thepalass.bsky.social
Structure & evolution of hypsodont molars in the zokors of North Asia during the Plio-Pleistocene onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology
3D reconstructions of the mandible and teeth of Episphneus orkhonensis (GIN 1103/74) in different views; lowest, enlarged, image is translucent to show the segmented inner spaces of the lingual enamel tubes (in green and pink); inset on the left shows a similar specimen (GIN 1103/78) with the dentine removed.
July 10, 2025 at 6:28 PM