Luis Collantes
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luiscollantes.bsky.social
Luis Collantes
@luiscollantes.bsky.social
130 followers 170 following 87 posts
Palaeontologist working on trilobites and other Palaeozoic arthropods.

Postdoctoral Researcher at the Yunnan Key Laboratory for Palaeobiology 🇨🇳

Huelva, Andalusia 🇪🇸
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Reposted by Luis Collantes
cambriancam.bsky.social
#TrilobiteTuesday

Here is part of the body of quite a large trilobite known as Paradoxides spinosus. This specimen comes from the Middle Cambrian (Drumian) Jince Formation from the Czech Republic. Paradoxides is one of the largest trilobites known from the Cambrian period.
November 25, 2025 at 3:07 PM
Reposted by Luis Collantes
jcurtisart.bsky.social
Pyrite nodule photographed under a digital microscope
November 25, 2025 at 8:02 AM
Reposted by Luis Collantes
irishrainforest.bsky.social
Horizontal slabs of pressure-hardened seabed, halfway up a mountain.

We live on such a wonderful planet 🌍
November 23, 2025 at 5:43 AM
luiscollantes.bsky.social
Reynolds et al. - A new exceptionally preserved phosphatocopid crustacean from the Furongian of Laurentia and a synthesis of Cambrian phosphatocopid distribution patterns

doi.org/10.1017/jpa....
November 24, 2025 at 7:05 AM
Reposted by Luis Collantes
romanceofbooks.bsky.social
Gems and minerals from “Erdgeschichte” by Melchior Neumayr. Leipzig; Bibliographisches Institut 1897.

#naturalhistory #sciart #chromolithography
#minerals #mineralogy
November 20, 2025 at 1:24 AM
Reposted by Luis Collantes
igeociencias.bsky.social
Esta semana en #GeocienciasEnElCole Jesús Martínez Frías nos habla sobre los indicios de biofirmas con posible origen orgánico en Marte. igeo.ucm-csic.es/geociencias-...
November 20, 2025 at 7:41 AM
Reposted by Luis Collantes
clarkeocrinus.bsky.social
Spent some time in my prep room for some fossil therapy.

This is an Isotelus roller I found at Flat Run quarry near Mt. Orab, Ohio. I exposed most of the body and the genal (cheek) spine.

I can feel my back loosen up and stress melt away.
November 20, 2025 at 2:09 AM
Reposted by Luis Collantes
harriedrage.bsky.social
*Gain skills and training in journal publishing!* Open Palaeontology is looking for Managing Editors and Steering Committee members! Please consider helping to shape community open-access publishing in palaeontology, and spread the word!
openpalaeo.org
@openpalaeo.bsky.social
Open Palaeontology (open access journal) Managing Editor job advert Open Palaeontology (open access journal) Steering Committee job advert
November 19, 2025 at 10:49 AM
Reposted by Luis Collantes
johnmoffitt.bsky.social
Tiny #Cambrian trilobite

#TrilobiteTuesday
Tiny #Cambrian trilobite #TrilobiteTuesday
November 19, 2025 at 4:20 AM
Reposted by Luis Collantes
cambriancam.bsky.social
Welcome back to #trilobitetuesday

Here is a beautifully enrolled Dolomitized Calymene celebra from the Silurian (Wenlock) Joliet Dolomite from Grafton, Illinois.
November 18, 2025 at 4:55 PM
Reposted by Luis Collantes
clarkeocrinus.bsky.social
This was my son's first complete trilobite - a goldbug!

This is a Triarthrus eatoni from the famous Ordovician Beecher's Bed of New York. This site preserves soft tissues like legs, gills and antennae with pyrite or fool's gold.

#TrilobiteTuesday
November 19, 2025 at 1:24 AM
luiscollantes.bsky.social
Laville et al. - Synchrotron X-ray tomography sheds light on the phylogenetic affinities of the enigmatic thylacocephalans within Pancrustacea

doi.org/10.1098/rspb...
November 16, 2025 at 11:02 AM
Reposted by Luis Collantes
pakozoic.bsky.social
¡Chorprecha! El hermano mayor de ‘Eso no estaba en mi libro de Hª de los dinosaurios’ llega la semana que viene: ‘Historia de la Paleontología’

almuzaralibros.com/fichalibro.p...
November 14, 2025 at 7:05 PM
Reposted by Luis Collantes
thepalass.bsky.social
ppgm: an R package for integrating neontological, palaeontological & climate data in a phylogenetic comparative framework onlinelibrary.wiley.com/doi/10.1111/... #SVP2025 @alexh-palaeo.bsky.social @datadryad.bsky.social @tamueccb.bsky.social
Flow diagram illustrating the workflow for the ppgm R package. It starts with an extant envelope, fossil data is added, the evolution of climate niche is modelled, and finally climate niche & palaeoclimate are matched to show potential range.
November 15, 2025 at 8:09 AM
Reposted by Luis Collantes
fossilrod.bsky.social
#Fractofusus is the most common organism at many of the #Ediacaran fossil sites in #Newfoundland, and it's also one of the best preserved. Here we can see the complex branching they possessed, preserved in exquisite detail.

#FossilFriday #FractofususFriday
November 14, 2025 at 6:27 PM
luiscollantes.bsky.social
García-Bellido & Gutiérrez-Marco - The giant emucaridid Tafilocaris ordovicica gen. et sp. nov. (Euarthropoda, Nektaspida), a peri-Gondwanan ‘Cambrian’ survivor in the Upper Ordovician Tafilalt Biota of Morocco

doi.org/10.1016/j.gr...
November 15, 2025 at 2:06 PM
Reposted by Luis Collantes
clarkeocrinus.bsky.social
How about a monster trilobite for #FossilFriday?

This is an Isotelus maximus from the late Ordovician near Cincinnati, Ohio.

The Friends of UMMP purchased this specimen and it is on display @ummnh.bsky.social
November 14, 2025 at 11:01 PM
Reposted by Luis Collantes
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
Reposted by Luis Collantes
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
luiscollantes.bsky.social
A new paper by Van Roy et al. about new Ordovician sea scorpions from the Fezouata Biota of Morocco🦂
November 12, 2025 at 6:19 AM
Reposted by Luis Collantes
thepalass.bsky.social
Microstructural & geochemical evidence offers a solution to the cephalopod cameral deposits riddle onlinelibrary.wiley.com/doi/10.1111/... @datadryad.bsky.social
Top: scheme showing the proposed new growth cycle model in an orthoceratoid. Ontogenetic progression of cameral deposits is shown from left to right (towards the apex). Organic sheets are formed when the soft body vacates the chamber, increasing the functional surface area of the siphuncle and guiding the precipitation of cameral deposits (red lines). Middle: Transmitted light (on the left) and cathodoluminescence (on the right in red and purple colours) microscopy images of Trematoceras elegans from the St Cassian Formation, Carnian, Late Triassic; PZO 16538-01, cross-section. Bottom: SEM image of Trematoceras elegans, PZO 16535-02, longitudinal section, showing the circular patterns of a single spherulitic sector, with a well-defined boundary to a neighbouring sector (interpreted as a cameral sheet).
November 9, 2025 at 3:43 PM
Reposted by Luis Collantes
seismatters.bsky.social
www.nature.com/articles/d41...).
Pressure to publish is rising as research time shrinks, finds survey of scientists
Researchers feel that pressures to publish are increasing, but the time and resources available to do research are decreasing, according to a survey by Elsevier.
www.nature.com
November 9, 2025 at 5:26 PM
Reposted by Luis Collantes
cormacscoast.bsky.social
A fossil filled concretion chunk - eroded out of shale layers. Almost all of the visible fossils are Goniatites - ancient relatives of Squid and Octopus.
County Clare, Ireland.
November 8, 2025 at 2:50 PM
Reposted by Luis Collantes
callanbentley.bsky.social
Fantastic new slab of eensy little sea urchin fossils from Oregon, courtesy of @smilodonichthys.bsky.social #FossilFriday ⚒️
A slab of rock about the length of a pencil, light gray in color, with orange circular fuzzy bordered fossils, and lots of little orange lines higgledy piggledy all over the slab. Pencil for scale.
November 7, 2025 at 1:30 PM