Carlos Jaramillo
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View article: Cretaceous amber of Ecuador unveils new insights into South America’s Gondwanan forests
Cretaceous amber of Ecuador unveils new insights into South America’s Gondwanan forests Open
Amber, a fossilised resin, became widespread during the Barremian ( ~ 122 Ma), marking the onset of the Cretaceous Resinous Interval (125–72 Ma). While common in the Northern Hemisphere, amber containing terrestrial arthropod inclusions ha…
View article: Digitizing collections to unlock the full potential of palynology: A case study with the Smithsonian palynology collection
Digitizing collections to unlock the full potential of palynology: A case study with the Smithsonian palynology collection Open
Societal Impact Statement Large palynological collections have been built over decades and contain vital information. However, they are often difficult to access and use effectively. What is the point of having such collections if they are…
View article: A DNA Barcode Dataset for the Aquatic Fauna of the Panama Canal: Novel Resources for Detecting Faunal Change in the Neotropics
A DNA Barcode Dataset for the Aquatic Fauna of the Panama Canal: Novel Resources for Detecting Faunal Change in the Neotropics Open
DNA metabarcoding is a powerful biodiversity monitoring tool, enabling simultaneous assessments of diverse biological communities. However, its accuracy depends on the reliability of reference databases that assign taxonomic identities to …
View article: Pollen morphology, deep learning, phylogenetics, and the evolution of environmental adaptations in <i>Podocarpus</i>
Pollen morphology, deep learning, phylogenetics, and the evolution of environmental adaptations in <i>Podocarpus</i> Open
Summary Podocarpus pollen morphology is shaped by both phylogenetic history and the environment. We analyzed the relationship between pollen traits quantified using deep learning and environmental factors within a comparative phylogenetic …
View article: Challenges and Opportunities in Tropical Dendrochronology for Climate Reconstructions
Challenges and Opportunities in Tropical Dendrochronology for Climate Reconstructions Open
Tree‐ring science, or dendrochronology, is broadly applied in temperate regions not only to determine a tree's age but also as a proxy for reconstructing the climatic and ecological conditions during the tree growing season. Dendrochronolo…
View article: Pollen morphology, deep learning, phylogenetics, and the evolution of environmental adaptations in <i>Podocarpus</i>
Pollen morphology, deep learning, phylogenetics, and the evolution of environmental adaptations in <i>Podocarpus</i> Open
Summary Podocarpus pollen morphology is shaped by both phylogenetic history and the environment. We analyzed the relationship between pollen traits quantified using deep learning and environmental factors within a comparative phylogenetic …
View article: Fossil Freshwater Fishes from the Pliocene of northern Colombia and the Palaeogeography of northern South America
Fossil Freshwater Fishes from the Pliocene of northern Colombia and the Palaeogeography of northern South America Open
1 Abstract Freshwater fishes from northern Colombia are reported from the Sincelejo and Ware formations, of Pliocene age. A total of ten taxa have been identified comprising two orders, five families, and nine genera. Characters from denta…
View article: A Late Holocene Lecythidaceae wood record from Valle del Cauca, Colombia
A Late Holocene Lecythidaceae wood record from Valle del Cauca, Colombia Open
A well-preserved fossil tree trunk was discovered in Valle del Cauca, Colombia. The radiocarbon date indicated that the tree lived during the Late Holocene, Meghalayan (4255 - 4083 cal BP). This finding is significant because the tree reta…
View article: Palynology of core 1-AS-20-AM from the Miocene and Quaternary of western Amazonia
Palynology of core 1-AS-20-AM from the Miocene and Quaternary of western Amazonia Open
The western Amazon landscapes evolved during the Neogene–Quaternary in response to the effects of the Andean orogeny and dynamic topography. During the Miocene, sedimentary basins accumulated hundreds of meters of sediments that harbor the…
View article: Thirty Years of Pollen Rain Sampling in the Barro Colorado Island 50-ha Plot
Thirty Years of Pollen Rain Sampling in the Barro Colorado Island 50-ha Plot Open
Pollen production and dispersal is critical to plant reproduction yet remains poorly understood in tropical forests. To address this knowledge gap, we are conducting a long-term pollen trapping study in the Barro Colorado Island (BCI) 50-h…
View article: Using Multi‐Homolog Plant‐Wax Carbon Isotope Compositions to Reconstruct Tropical Vegetation Types
Using Multi‐Homolog Plant‐Wax Carbon Isotope Compositions to Reconstruct Tropical Vegetation Types Open
The stable carbon isotope composition (δ 13 C) of plant components such as plant wax biomarkers is an important tool for reconstructing past vegetation. Plant wax δ 13 C is mainly controlled by photosynthetic pathways, allowing for the dif…
View article: The origin and speciation of orchids
The origin and speciation of orchids Open
Summary Orchids constitute one of the most spectacular radiations of flowering plants. However, their origin, spread across the globe, and hotspots of speciation remain uncertain due to the lack of an up‐to‐date phylogeographic analysis. W…
View article: Using Multi-Homologue Plant-Wax Carbon Isotope Signatures to Reconstruct Tropical Vegetation Types
Using Multi-Homologue Plant-Wax Carbon Isotope Signatures to Reconstruct Tropical Vegetation Types Open
The stable carbon isotope composition (δ13C) of plant components such as plant wax biomarkers is an important tool for reconstructing past vegetation. Plant wax δ13C is mainly controlled by photosynthetic pathways, allowing for the differe…
View article: Impact of E-learning for teaching electrocardiography. A comparative study of asynchronous and synchronous groups
Impact of E-learning for teaching electrocardiography. A comparative study of asynchronous and synchronous groups Open
Background This study proposes a methodology for e-electronic teaching of electrocardiography for undergraduate medical students. A progressive sequence, assessments, and several didactic strategies were applied for both groups. This study…
View article: Palynology of Cretaceous amber deposits of the Oriente Basin-Ecuador and the Eastern Cordillera-Colombia
Palynology of Cretaceous amber deposits of the Oriente Basin-Ecuador and the Eastern Cordillera-Colombia Open
Several Cretaceous amber-bearing localities were recently discovered, including the Oriente Basin of Ecuador (Hollín Formation), and the Eastern Cordillera of Colombia (Une Formation at La Popa mine). A palynological study of 48 samples wa…
View article: The Origin And Speciation Of Orchids
The Origin And Speciation Of Orchids Open
Summary ⍰ Orchids constitute one of the most spectacular radiations of flowering plants. However, their geographical origin, historical spread across the globe, and hotspots of speciation remain uncertain due to the lack of a broad phyloge…
View article: Bridging two oceans: small toothed cetaceans (Odontoceti) from the Late Miocene Chagres Formation, eastern Caribbean (Colon, Panama)
Bridging two oceans: small toothed cetaceans (Odontoceti) from the Late Miocene Chagres Formation, eastern Caribbean (Colon, Panama) Open
Fossil cetaceans are often found in Miocene marine outcrops across the globe. However, because this record is not homogeneous, the dissimilar increase in occurrences, along with the sampling bias has created regions with extensive records …
View article: The evolution of extant South American tropical biomes
The evolution of extant South American tropical biomes Open
Summary This review explores the evolution of extant South American tropical biomes, focusing on when and why they developed. Tropical vegetation experienced a radical transformation from being dominated by non‐angiosperms at the onset of …
View article: Stratigraphy of a middle Miocene neotropical Lagerstätte (La Venta Site, Colombia)
Stratigraphy of a middle Miocene neotropical Lagerstätte (La Venta Site, Colombia) Open
Mora-Rojas, Laura, Cárdenas, Andrés, Jaramillo, Carlos, Silvestro, Daniele, Bayona, Germán, Zapata, Sebastián, Moreno, Federico, Silva, César, Moreno-Bernal, Jorge W. (2023): Stratigraphy of a middle Miocene neotropical Lagerstätte (La Ven…
View article: Plantwax carbon isotope data from tropical South American surface soils
Plantwax carbon isotope data from tropical South American surface soils Open
The data set contains
View article: Descriptive systematics of Upper Palaeocene–Lower Eocene pollen and spores from the northern Niger Delta, south-eastern Nigeria
Descriptive systematics of Upper Palaeocene–Lower Eocene pollen and spores from the northern Niger Delta, south-eastern Nigeria Open
Fossil pollen and spores are a vital source of information on the geological history of tropical vegetation including reconstructions of vegetation diversity and composition. However, such work relies on a sound taxonomic framework, and th…
View article: Plantwax carbon isotope data from tropical South American surface soils
Plantwax carbon isotope data from tropical South American surface soils Open
The data set contains