Paleobiology Database

Databases like @paleodb.bsky.social are cornerstones of palaeobiological research. Most are concentrated in the 'Global North', but the associated socio-economic advantages sadly do not make them infallible to financial and infrastructure challenges... (4/n)

Top: Plot showing variation in the estimated slopes of the palaeolatitudinal biodiversity gradient through time across the Phanerozoic (including data from Europe and North America) for 1000 km grid cells. Slopes are estimated as the coefficient of per-cell, stage-level SQS diversity on absolute palaeolatitude for individual stages. Triangle data points meet quality criteria; circles do not. Red points are significant; grey points are not. A blue ring around a data point indicates a post-extinction interval. Horizontal blue shaded region highlights slopes close to zero. Bottom right: Plot illustrating the relationships between per-cell, stage-level diversity estimates and palaeolatitude aggregated across the entire Phanerozoic, globally. Data point colours indicate palaeolatitude zone: blue triangles, low; green squares, mid; purple circles high latitude. Solid black line is ordinary least squares regression line; dashed line traces the 95th quantile for each latitudinal band.

Marine animal diversity across latitudinal and temperature gradients during the Phanerozoic onlinelibrary.wiley.com/doi/full/10.... @climatesamwell.bsky.social @eesaupe.bsky.social @paleodb.bsky.social

Top: Grid including illustrations (top row) and photographs (bottom row) of Palaeozoic echinoid fossils demonstrating examples of 5 taphonomic grades used in the paper. Left to right: TG1, MCZ:IP:103620, disarticulated spine and interambulacral plate of the archaeocidarid Archaeocidaris sp.; TG2, LACM 2020.1, pile of disarticulated interambulacral plates and spines from Archaeocidaris sp.; TG3, MCZ:IP:101936, fragment of a test of the palaechinid Maccoya intermedia showing ambulacral and interambulacral plates; TG4, YPM 26552, denuded test of the lepidesthid echinoid Lepidesthes colletti; TG5, NHMUK Pal E 76888, holotype of Archaeocidaris whatleyensis, an articulated test preserved with covering spines; scale bars (with photographs) are 1 cm. Bottom: Coloured plot showing the temporal distribution of taphonomic grades from the Ordovician (on the left) to the Permian. Vertical axis represents frequency of occurrence. Different colours indicate the 5 different taphonomic grades.

Taphonomic controls on a multi-element marine skeletal fossil record onlinelibrary.wiley.com/doi/10.1111/... @echinerd.bsky.social @datadryad.bsky.social @paleodb.bsky.social #FossilFriday

Three photographs of fossil brachiopods, examples of key plectambonitoid taxa: taffiin Taffia from the Lower Ordovician of Alabama, USA (USNM 91586); leptellinid Leptelloidea from the Upper Ordovician of Baltica (NHMUK BB 5169); sowerbyellin Sowerbyella from the Upper Ordovician of Baltica (NHMUK BB 5149). On the lower left, a plot showing the change in number of plectambonitoid brachipod genera through time (Tremadocian on the left to Eifelian on the right), with the Late Ordovician Mass Extinction (LOME) marked as a yellow vertical line.

Diversification & disparity in a major Palaeozoic clade of Brachiopoda: the rise and fall of the Plectambonitoidea onlinelibrary.wiley.com/doi/10.1111/... @paleodb.bsky.social

Enriching experience at the @paleodb.bsky.social workshop focused on mastering the core functions of this powerful database and research tool. Some highlights include- entering occurrence and taxonomic data, extracting data for analysis and visualization, and of course international networking!

On the left, two phylomorphospace plots showing the first two principal components for the dentary (top) and maxilla (bottom) of a group of theropods.Carnivores are shaded red, non-carnivores grey. On the right, digital reconstructions from CT scan images of a left dentary of Berthasaura leopoldinae (MPCO.V 0121): at the top an isosurface of the bone in dorsal view, mirrored to show how a pair would be angled; at the bottom, a translucent model in lateral view with internal cavities highlighted in yellow.

Convergent evolution among non-carnivorous, desert-dwelling theropods as revealed by the dentary of the noasaurid Berthasaura leopoldinae from the Cretaceous of Brazil onlinelibrary.wiley.com/doi/10.1111/... #FossilFriday @paleodb.bsky.social @datadryad.bsky.social

🚨 Deadline extended to May 1st! 🚨

Be sure to get your applications in for this summer's introductory workshop to the PBDB ASAP!

More details and application form here:
forms.gle/xQqDEQwwXeTH...

Great opportunity, but - warning - may lead to you spending years of your life entering data...

Great to be involved in #Paleobiology paper led by @jonhendricks.bsky.social showing #stasis & #punctuatedequilibria in fossil record @nilese.bsky.social #macroevolution - also evaluates records in databases @paleodb.bsky.social doi.org/10.1017/pab....

Paleobiology Database Summer 2025 Workshop Application Dates: June 2-5, 2025 (4 days) Location: George Mason University, Fairfax, VA, USA

Do you want to learn how to contribute to and use the Paleobiology Database? 🌎🦕🐚

Look no further - we're now welcoming applications to the 2025 edition of our introductory workshop!

More details here: forms.gle/xQqDEQwwXeTH...

happy to share some freshly published work in Paleobiology with Daniel Phillipi and Linda Ivany (not on bluesky): doi.org/10.1017/pab....
@paleodb.bsky.social paper #493

Photograph of a fossil skull (above), same with labels overlaid (below). Type material of Idiorophus patagonicus (MLP-PV-5-2) in ventral view. Scale bar (to left of upper image) is 10 cm. In the bottom left corner is a globe showing South America and an expanded detail of Chile and Argentina, with Patagonia shaded grey and the study area indicated with a black rectangle.

New in #PapersinPalaeontology: Awakening Patagonia's sleeping sperm whale: a new description of the Early Miocene Idiorophus patagonicus onlinelibrary.wiley.com/doi/full/10.... @paleodb.bsky.social

⛏️For people working on the Devonian, Carboniferous & Permian (=all the best periods). Deadline for abstract submission is April 1st. geotolosa2025.sciencesconf.org
#geology #paleontology #paleobotany #paleoclimatology #paleozoic

Apparent timescaling of fossil diversification rates is caused by sampling bias Negative scaling relationships between diversification rates and the duration of organismal groups occur in molecular phylogenetic and fossil data. This causes a disconnect between micro- and macroevo...

New in @currentbiology.bsky.social Studies have found that fossil/molecular diversification rates scale with time, hinting at a disconnect between micro and macroevolution. We show that these trends are absent from the fossil record when controlling for sampling biases:
www.cell.com/current-biol...

Two photographs of fossil cetacean skulls in lateral view. Above: the holotype of Eosqualodon langewieschei (Museum of Bünde specimen number 326). Below: Squalodon bellunensis (specimen number MGP 26131) in lateral view. Scale bars (on the right side) are both 10 cm.

Taxonomic revision of the family Squalodontidae (Cetacea, Odontoceti): emptying the wastebasket of fragmentary holotypes onlinelibrary.wiley.com/doi/10.1002/... #FossilFriday @paleodb.bsky.social

Yesterday one of my students taught me a couple of ways to sign “fossil” in ASL. The one on the right is evocative bc it’s the bone sign but buried. The one on the left is used more for plant fossils, apparently, and is meant to show an object on a slab. I love these!

A photo by Lucas George Wendt (Unsplash) shows a plastic triceratops skeleton model seen through a magnifying lens. A book about dinosaurs in the background.

Are you looking to pursue a career in #Palaeontology?

On our website you can find information on Undergraduate and Postgraduate (Masters and #PhD) courses, and articles on possible career paths within palaeontology: www.palass.org/careers

Paleobiology Database User Guide Version 1.0 Author(s): Uhen, Mark D.; Allen, Bethany; Behboudi, Noushin; Clapham, Matthew E.; Dunne, Emma; Hendy, Austin; Holroyd, Patricia A.; Hopkins, Melanie; Mannion, Philip; Novack-Gottshall, Phil; Pimiento,...

For more info about the PBDB and its data, take a look at our new user guide: escholarship.org/uc/item/6tm0...

Image of the world showing fossil occurrences recorded in the Paleobiology Database as coloured dots with a geological timescale at the bottom

The Paleobiology Database has landed on Bluesky! ✨

Here we'll be posting database updates, new publications and all things fossil-data-related 🌍🐚

Be sure to check out our website for more info on how to contribute to and use PBDB data as well as loads of other resources! 🦕📊

paleobiodb.org