This Tuesday at #PalaeoPERCS we will be joined by Brittany Hupp from George Mason University, USA.
Sign up here: paleopercs.com/participate/

On a different note: we are noticing that our email newsletter is often going to spam recently. We are experimenting with using less links in the newsletter. In the meantime, please check your spam box if you are subscribed, but haven't been receiving our weekly newsletter and seminar reminders! 🦖

Pal(a)eoPERCS Pal(a)eoPERCS (Pal(a)eo EaRly Career Seminar) is a virtual seminar series designed to showcase the research of Early Career Researchers in paleo- (ntology, ecology, ceanography, climate, etc.). This i...

Hello everyone! As you have noticed, this week we were on hiatus, and next week (April 14) we will be as well. We will return on April 21, so stay tuned! 🪸🌊

In the meantime, you can browse through past PERCS talks on our YouTube Channel: www.youtube.com/@paleopercs1... (1/2)

Coming Tuesday at #PalaeoPERCS we will be joined by Holly-Anne Turner from University College Cork, Ireland.
Sign up here: paleopercs.com/participate/

Next week at #PalaeoPERCS we will be joined by Vanessa Fichtner from the University of Göttingen, Germany.
Sign up here: paleopercs.com/participate/

Next week at #PalaeoPERCS we will be joined by Joanna Tindall from PLOS One, UK.
Sign up here: paleopercs.com/participate/
(1/4)

It's #PalaeoPercs day! Join us at 1600 UTC to learn more about biomechanical aspects of the largest predator of Brazilian Middle Triassic with Letícia Rezende de Oliveira from Federal University of Santa Maria, Brazil!

Next week at #PalaeoPERCS we will be joined by Leticia Rezende de Oliveira from Federal University of Santa Maria, Brazil. Sign up here: https://paleopercs.com/participate/

It's #PalaeoPercs day! Join us at 1600 UTC to learn more about the evolution of heterodonty in vertebrates with Savannah Olroyd from Utah Valley University, USA!

If you have any questions or concerns, please let us know. We can't wait to see you on March 4th at 1600 UTC! #PalaeoPERCS
(4/4)

Pal(a)eoPERCS Post by @palaeopercs.

If you would like to join our seminars, we also have a code of conduct which we expect *all* participants and speakers to adhere to. You can read the full code of conduct here: Code of Conduct – Pal(a)eoPERCS (paleopercs.com)
(3/4)

Advances in molecular developmental biology have revealed that many occurrences of convergent evolution are better categorized as parallel evolution, the acquisition of a similar trait in closely related lineages through the co-option of ancestrally shared genetic, developmental, or morphological units. The concept of parallel evolution is still poorly formed in evolutionary biology, and major questions remain regarding the extent of its role in macroevolutionary patterns. One feature that may be an example of parallel evolution is heterodonty, the variation in tooth size and/or shape along a jaw. While heterodonty is often considered a mammalian feature, several non-mammalian taxa also exhibit varying degrees of heterodonty. Our ongoing research attempts to characterize heterodonty across reptiles and compare the mechanisms underlying heterodont tooth development in reptiles and mammals.

You can see Savannah's abstract here (with alt text):
(2/4)

Apologies for the radio silence on here! Tomorrow (on a Wednesday, not Tuesday this week!) at #PalaeoPERCS we will be joined by Savannah Olroyd from Utah Valley University, USA.
Sign up here: paleopercs.com/participate/
(1/4)

It's #PalaeoPercs day! Join us at 1600 UTC to learn more about the stratigraphy and sedimentology of Lower Permian carbonates with Daniel Calvo Gonzalez from Geological Survey of Canada!

If you have any questions or concerns, please let us know. We can't wait to see you on December 9th at 1600 UTC! #PalaeoPERCS
(4/4)

Pal(a)eoPERCS Post by @palaeopercs.

If you would like to join our seminars, we also have a code of conduct which we expect *all* participants and speakers to adhere to. You can read the full code of conduct here: Code of Conduct – Pal(a)eoPERCS (paleopercs.com)
(3/4)

The Early Permian (Asselian–Kungurian) witnessed the peak and collapse of the late Paleozoic ice age (LPIA). Its demise was coeval with rising pCO2atm from estimated pre-industrial levels in the earliest Asselian (peak-glaciation) to doubling today’s concentrations at the end of the Kungurian (post-glaciation). Sea-level fluctuations caused by the waxing and waning of ice sheets during peak glaciation are recorded in Asselian cyclothems. These transgressive-regressive sequences have been extensively studied but the amplitude in sea-level change they record remains unclear. The first part of this presentation will discuss the amplitude of eustatic fluctuations represented in cyclothems in New Mexico, Austria, and South China. Contemporaneous to the peak and collapse of the LPIA, an aridification and seasonality trend associated with intensifying monsoonal circulation began across most of Pangea. In South China, a shift towards warm and humid conditions had a profound impact on sedimentation of carbonate platforms adjacent to emerged areas. Enhanced coastal upwelling driven by intensified monsoonal circulation affected sedimentation of platforms outboard. The second part of this presentation will investigate the effect of warm and humid conditions in carbonate platforms of South China and enhanced coastal upwelling on areas at low latitude.

You can see Daniel's abstract here (with alt text):
(2/4)

Next week at #PalaeoPERCS we will be joined by Daniel Calvo Gonzalez from Geological Survey of Canada, Canada.
Sign up here: paleopercs.com/participate/
(1/4)

It's #PalaeoPercs day! Join us at 1600 UTC to learn more about tracing climate change through Alaskan glaciers with Laura Larocca from Arizona State University, USA!

It's #PalaeoPercs day! Join us at 1600 UTC to learn more about the Oligo-Miocene dolphin Squalodon with Margot Nelson from Calvert Marine Museum, USA!

If you have any questions or concerns, please let us know. We can't wait to see you on November 25th at 1600 UTC! #PalaeoPERCS
(4/4)

Pal(a)eoPERCS Post by @palaeopercs.

If you would like to join our seminars, we also have a code of conduct which we expect *all* participants and speakers to adhere to. You can read the full code of conduct here: Code of Conduct – Pal(a)eoPERCS (paleopercs.com)
(3/4)

Taxonomic work is the backbone of vertebrate paleontology and provides crucial scaffolding for our understanding of a fossil’s place in nearly any aspect of science: its evolutionary relationships, its paleoecology, evolutionary trends, biogeographic dispersal, and functional morphology. Furthermore, taxonomy is important in democratizing paleontology, as it provides detailed anatomical descriptions, photographs, and even 3D scans of specimens some workers may never get to see in person. Fossils that do not get proper taxonomic treatment often go understudied. One example is the toothed whale family the Squalodontidae. Despite being a transitional form between the earliest aquatic whales and modern toothed whales, the taxonomic practices of the 19th century rendered the Squalodontidae a “wastebasket taxon” and it has taken over a century for this family to be extensively revisited. Findings reveal the real diversity of this family, their ecological niches, their evolutionary relationships, and the implications for trait evolution in toothed whales. The Squalodontidae highlight the importance of revisiting historic specimens in a modern light and the value of taxonomy in the study of deep time.

You can see Margot's abstract here (with alt text):
(2/4)

Next week at #PalaeoPERCS we will be joined by Margot Nelson from Calvert Marine Museum, USA.
Sign up here: paleopercs.com/participate/
(1/4)

It's #PalaeoPercs day! Join us at 1600 UTC to learn more about Palaeoichthyology with Gustavo A. Ballen from São Paulo State University, Brazil!

If you have any questions or concerns, please let us know. We can't wait to see you on November 18th at 1600 UTC! #PalaeoPERCS
(4/4)

Pal(a)eoPERCS Post by @palaeopercs.

If you would like to join our seminars, we also have a code of conduct which we expect *all* participants and speakers to adhere to. You can read the full code of conduct here: Code of Conduct – Pal(a)eoPERCS (paleopercs.com)
(3/4)

Fossil vertebrates have been used in the literature as a source of information on past palaeogeographic settings in the Neotropics, although fishes have been less studied when compared to other groups such as mammals. Fishes and their fossil record are especially useful for studying past drainage and landmass configurations because of physical restriction to either freshwater or marine aquatic environment that most species present, and their comparatively limited dispersal capacities when compared to other vertebrate groups such as birds or large mammals. The goal of this presentation is to showcase the relevance of fossil fishes from Cenozoic strata in Northern South America to test hypotheses on palaeogeographic reconstructions, especially related to the timing of the Panama Isthmus closure, and the timing of drainage separation as a consequence of the Andean orogeny. We will discuss the implications of the freshwater fossil findings from the Castilletes, Sincelejo, and Ware Formations in Northern Colombia, in the middle Miocene to Pliocene time interval. We will also discuss the use of the fossil record in marine groups for calibrating molecular phylogenies and how this helps us understand the relationship between the Panama Isthmus closure and the evolution of Carangarian fishes. Finally, we will highlight how the need for statistical tools for better integrating and comparing information from the fossil record and molecular phylogenies have triggered the development and computational implementation of methods for estimating events in geological time, and to better use the available fossil record in divergence time estimation.

You can see Gustavo's abstract here (with alt text):
(2/4)

Next week at #PalaeoPERCS we will be joined by Gustavo A. Ballen from São Paulo State University, Brazil.
Sign up here: paleopercs.com/participate/
(1/4)

It's #PalaeoPercs day! Join us at 1000 UTC to learn more about stromatolites and research opportunities in China with Viplove Rajurkar from Tongji University, China!