Calatayud, Joaquín; Bernardo-Madrid, Rubén; Neuman, Magnus; Rojas, Alexis; Rosvall, Martin Exploring the solution landscape enables more reliable network community detection Journal Article Phys. Rev. E, 100 , pp. 052308, 2019. Links | BibTeX @article{PhysRevE.100.052308,
title = {Exploring the solution landscape enables more reliable network community detection},
author = {Joaquín Calatayud and Rubén Bernardo-Madrid and Magnus Neuman and Alexis Rojas and Martin Rosvall},
url = {https://link.aps.org/doi/10.1103/PhysRevE.100.052308},
doi = {10.1103/PhysRevE.100.052308},
year = {2019},
date = {2019-11-01},
journal = {Phys. Rev. E},
volume = {100},
pages = {052308},
publisher = {American Physical Society},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Rojas, Alexis; Sandy, Michael R Early Cretaceous (Valanginian) brachiopods from the Rosablanca Formation, Colombia, South America: Biostratigraphic significance and paleogeographic implications Journal Article Cretaceous Research, 2018. Abstract | Links | BibTeX @article{Rojas2018,
title = {Early Cretaceous (Valanginian) brachiopods from the Rosablanca Formation, Colombia, South America: Biostratigraphic significance and paleogeographic implications},
author = {Alexis Rojas and Michael R. Sandy},
url = {https://www.sciencedirect.com/science/article/pii/S0195667118303665},
doi = {10.1016/j.cretres.2018.12.011},
year = {2018},
date = {2018-12-18},
journal = {Cretaceous Research},
abstract = {The Mesozoic fossil record of brachiopods in northern South America is relatively scarce and their biogeographical history is not well understood. Cretaceous brachiopods in this region are restricted to carbonate platforms of Colombia. Here we examine the brachiopod fauna from the middle part of the Rosablanca Formation near the town of Zapatoca, Eastern Cordillera of Colombia. We describe Sellithyris elizabetha nov. sp. combining traditional morphometrics and serial sectioning. This new terebratulide species shows morphological similarities with other species of the genus Sellithyris, including a Valanginian species from the ancient Gulf of Mexico. Using a semi-quantitative taphonomic analysis, we identified reworked specimens restricted to a single stratigraphic horizon, and consistent with a large-scale erosional hiatus that may affect the biochronology of the Rosablanca Formation. In addition, phosphatic shells of the lingulide Lingularia sp. were recovered from two stratigraphic horizons and are valuable for local correlations. Although much of the material is fragmentary, it represents the oldest occurrences of Cretaceous lingulides in the region so far. Lingulide brachiopods have traditionally been considered as rare elements in Cretaceous near-shore marine communities, however, the material reported here suggests that they may have been common locally.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The Mesozoic fossil record of brachiopods in northern South America is relatively scarce and their biogeographical history is not well understood. Cretaceous brachiopods in this region are restricted to carbonate platforms of Colombia. Here we examine the brachiopod fauna from the middle part of the Rosablanca Formation near the town of Zapatoca, Eastern Cordillera of Colombia. We describe Sellithyris elizabetha nov. sp. combining traditional morphometrics and serial sectioning. This new terebratulide species shows morphological similarities with other species of the genus Sellithyris, including a Valanginian species from the ancient Gulf of Mexico. Using a semi-quantitative taphonomic analysis, we identified reworked specimens restricted to a single stratigraphic horizon, and consistent with a large-scale erosional hiatus that may affect the biochronology of the Rosablanca Formation. In addition, phosphatic shells of the lingulide Lingularia sp. were recovered from two stratigraphic horizons and are valuable for local correlations. Although much of the material is fragmentary, it represents the oldest occurrences of Cretaceous lingulides in the region so far. Lingulide brachiopods have traditionally been considered as rare elements in Cretaceous near-shore marine communities, however, the material reported here suggests that they may have been common locally. |
Rojas, Alexis; Portell, Roger W; Kowalewski, Michał The post-Palaeozoic fossil record of drilling predation on lingulide brachiopods Journal Article Lethaia, 50 (2), pp. 296–305, 2017, ISSN: 00241164. Links | BibTeX @article{rojas_post-palaeozoic_2017,
title = {The post-Palaeozoic fossil record of drilling predation on lingulide brachiopods},
author = {Alexis Rojas and Roger W Portell and Michał Kowalewski},
url = {http://doi.wiley.com/10.1111/let.12198},
doi = {10.1111/let.12198},
issn = {00241164},
year = {2017},
date = {2017-01-01},
urldate = {2017-04-03},
journal = {Lethaia},
volume = {50},
number = {2},
pages = {296--305},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Rojas, Alexis; Patarroyo, Pedro; Mao, Liang; Bengtson, Peter; Kowalewski, Michał Global biogeography of Albian ammonoids: A network-based approach Journal Article Geology, 45 (7), pp. 659–662, 2017, ISSN: 0091-7613, 1943-2682. Links | BibTeX @article{rojas_global_2017,
title = {Global biogeography of Albian ammonoids: A network-based approach},
author = {Alexis Rojas and Pedro Patarroyo and Liang Mao and Peter Bengtson and Michał Kowalewski},
url = {http://geology.gsapubs.org/lookup/doi/10.1130/G38944.1},
doi = {10.1130/G38944.1},
issn = {0091-7613, 1943-2682},
year = {2017},
date = {2017-01-01},
urldate = {2017-06-22},
journal = {Geology},
volume = {45},
number = {7},
pages = {659--662},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Rojas, Alexis; Hendy, Austin; Dietl, Gregory Edge-drilling behavior in the predatory gastropod Notocochlis unifasciata (Lamarck, 1822) (Caenogastropoda, Naticidae) from the Pacific coast of Panama: taxonomic and biogeographical implications Journal Article Vita Malacologica, 13 , pp. 63–72, 2015. BibTeX @article{rojas_edge-drilling_2015,
title = {Edge-drilling behavior in the predatory gastropod Notocochlis unifasciata (Lamarck, 1822) (Caenogastropoda, Naticidae) from the Pacific coast of Panama: taxonomic and biogeographical implications},
author = {Alexis Rojas and Austin Hendy and Gregory Dietl},
year = {2015},
date = {2015-01-01},
journal = {Vita Malacologica},
volume = {13},
pages = {63--72},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Rojas, Alexis; Gracia, Adriana; Patarroyo, Pedro Brachiopods from off the San Bernardo Archipelago (Colombian Caribbean), with comments on specific synonymies in Tichosina, Cooper, 1977 Journal Article Zootaxa, 3914 (1), pp. 55, 2015, ISSN: 1175-5334, 1175-5326. Links | BibTeX @article{rojas_brachiopods_2015,
title = {Brachiopods from off the San Bernardo Archipelago (Colombian Caribbean), with comments on specific synonymies in Tichosina, Cooper, 1977},
author = {Alexis Rojas and Adriana Gracia and Pedro Patarroyo},
url = {http://biotaxa.org/Zootaxa/article/view/zootaxa.3914.1.3},
doi = {10.11646/zootaxa.3914.1.3},
issn = {1175-5334, 1175-5326},
year = {2015},
date = {2015-01-01},
urldate = {2015-05-07},
journal = {Zootaxa},
volume = {3914},
number = {1},
pages = {55},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Schemm-Gregory, Mena; Rojas-Briceño, Alexis; Patarroyo, Pedro; Jaramillo, Carlos First report of Hadrosia Cooper, 1983 in South America and its biostratigraphical and palaeobiogeographical implications Journal Article Cretaceous Research, 34 , pp. 257–267, 2012, ISSN: 01956671. Links | BibTeX @article{schemm-gregory_first_2012,
title = {First report of Hadrosia Cooper, 1983 in South America and its biostratigraphical and palaeobiogeographical implications},
author = {Mena Schemm-Gregory and Alexis Rojas-Briceño and Pedro Patarroyo and Carlos Jaramillo},
url = {http://linkinghub.elsevier.com/retrieve/pii/S0195667111001832},
doi = {10.1016/j.cretres.2011.11.005},
issn = {01956671},
year = {2012},
date = {2012-01-01},
urldate = {2015-09-08},
journal = {Cretaceous Research},
volume = {34},
pages = {257--267},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|