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Un raro fósil de T. rex se vende en una subasta por la cifra récord de US$ 50,1 millones

Un esqueleto de Tyrannosaurus rex procedente de Dakota del Sur se ha convertido en el fósil más caro jamás vendido en una subasta, tras alcanzar este martes la cifra récord de US$ 50.130.000 en Sotheby’s, Nueva York.

El esqueleto, con una antigüedad aproximada de 67 millones de años, ha sido apodado “Gus” en honor al difunto Gary “Gus” Licking, un ganadero del condado de Harding, Dakota del Sur, propietario del terreno donde se encontró el espécimen. Licking falleció en 2022, un año después de iniciarse la excavación del fósil.

El T. rex Gus mide 11,6 metros de largo y 3,8 metros de alto, con un cráneo de 137 centímetros, lo que lo convierte en uno de los T. rex más grandes jamás encontrados, según Sotheby’s. Incluye 183 elementos óseos fósiles, lo que supone un 61 % de su integridad ósea, o entre un 75 % y un 80 % de su integridad en masa.

Al igual que muchos otros esqueletos de T. rex, Gus proviene de la Formación Hell Creek, un legendario yacimiento geológico que se extiende por Montana, Wyoming y las Dakotas. Uno de los primeros esqueletos de T. rex se encontró allí en 1902, y el nombre T. rex se le dio a la especie basándose en los fósiles desenterrados en esta zona.

El récord anterior de subasta de fósiles pertenecía a Apex, el estegosaurio, adquirido en 2024 por el multimillonario Ken Griffin por 44,6 millones de dólares. Actualmente se encuentra a la mitad de un préstamo de cuatro años en el Museo de Historia Natural de Nueva York.

La estimación previa a la venta de Gus era de entre 20 y 30 millones de dólares. La oferta ganadora se realizó por teléfono.

Los paleontólogos generalmente creen que una vez que un fósil termina en manos privadas, es una pérdida para la ciencia. Las revistas científicas solo publican investigaciones realizadas con especímenes que se encuentran en colecciones de acceso público; si un fósil es de propiedad privada, los estudios no pueden reproducirse de manera confiable, un estándar importante para verificar los hallazgos científicos.

Gus posee muchas características que lo hicieron interesante tanto para científicos como para posibles compradores. El cráneo conserva aproximadamente el 82 % de los huesos originales, y el esqueleto incluye componentes poco comunes como la fúrcula, una pelvis completa y ambos pies. Sotheby’s afirma que solo se conoce otro espécimen con ambos pies bien conservados. Según los informes, Gus también muestra marcas de mordeduras y evidencia de fracturas que el dinosaurio sobrevivió.

La casa de subastas afirmó que Gus es uno de los fósiles de T. rex más completos jamás encontrados, pero su estado es menos completo que el de Stan —un T. rex vendido en subasta en 2020 por 31,8 millones de dólares, con un 70 % de su estructura ósea completa— y que el de Sue, el primer fósil de dinosaurio vendido en subasta en 1997. Este último esqueleto estableció el estándar con su impresionante 90 % de integridad.

Sin embargo, Gus se vende con “derechos completos”, lo que significa que no contiene fragmentos de otros dinosaurios protegidos por derechos de autor. Normalmente, cuando falta un hueso en un esqueleto, se compra un molde de otro esqueleto existente para completar el hueco.

El estándar de facto para este proceso es Stan, que proviene del mismo condado de Dakota del Sur que Gus. El comprador de Gus podría convertirse en un competidor de Stan y licenciar o producir moldes para museos o coleccionistas privados.

Todas las miradas están puestas ahora en el comprador, cuya identidad aún se desconoce, y en qué decidirá hacer con el fósil.

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What to know about Candida auris, a fungus contaminating healthcare spaces

(CNN) — Cases of Candida auris, a fungus found in healthcare facilities, are rising rapidly this year, the US Centers for Disease Control and Prevention says.As of July 25, 3,437 clinical cases in 27 states have been reported, CDC data shows. The agency recorded 4,290 clinical cases in all of last year.C. auris is primarily a concern for people who are hospitalized. The total number of clinical cases has been increasing since its detection in the US in 2016, the CDC says. The rate has slowed in recent years, but it still remains a “critical public health threat.”What is Candida auris, and how does it spread?Candida auris is a yeast, a specific type of fungus, that spreads through contact with contaminated objects and people, according to Dr. Graham Snyder, medical director of infection prevention and hospital epidemiology at University of Pittsburgh Medical Center.A common characteristic, Snyder said, is its ability to spread and remain in healthcare settings, including nursing facilities and hospitals, as it can resist certain cleaning products. It more seriously affects people who have underlying conditions.“We quickly learned that Candida auris is very good at sticking around in the environment — and that’s not true for all types of pathogens or germs that may be spread through the environment — so we pay extra special attention when we know somebody has Candida auris to making sure that we clean and disinfect the environment,” Snyder said.The first case of C. auris was detected in Japan in 2009; the first case in the United States was detected in 2016, according to the CDC. The agency characterizes C. auris as an “urgent threat,” as it is often multidrug-resistant, meaning certain strains can be resistant to all three classes of antifungal medications used to treat fungal infections.What happens when people get it?There are two ways people can have C. auris, said Dr. Scott Roberts, an associate professor of infection prevention at Yale University. The first, colonization, occurs when the fungi appear on a person’s skin, and it’s asymptomatic most of the time. The second, infection, happens when it enters the body through a break in the skin.C. auris can be detected via a swab of the armpit or groin area.“Most of the time, the infections occur through bloodstream infection. There’s some entry into the skin somewhere; maybe your immune system’s not as good as it should be. You can’t fight it off, and you lead to a big infection,” Roberts said.Although this year’s case count may sound alarming, Dr. Nitipong Permpalung, director of mycology research at Johns Hopkins University, noted that there has also been an increase in screening that differentiates between those who are colonized with C. auris and those who are infected, which could account for some of the rising numbers.“We need to understand that ‘OK, this is a positive screening test, and this is through clinical case, and go from there,’ but I understand the concern. But we need to get some more data, and we need to work on the research in this area to improve the care,” Permpalung said.Dr. Ilan Schwartz, an associate professor of medicine at Duke University, said the fungi can cause symptoms like fever, low blood pressure or a high heart rate, as well as a dangerous condition called sepsis, when it enters the bloodstream. Because it spreads more often in healthcare settings, Schwartz said, it primarily affects people who have other health conditions.Like many germs that can be potentially deadly “in the right circumstance,” Schwartz said, infections can become serious and can be deadly in vulnerable patients, such as those undergoing chemotherapy, recovering from surgery or taking antibiotics.“Generally, these are going to be in patients who are already hospitalized and who are being monitored, and so the healthcare team should be well aware already if patients are showing signs of a general infection, so I don’t think that it’s something individuals need to be vigilant about,” Schwartz said.Awareness at the forefrontRoberts said people who are hospitalized or living in other medical settings should watch for symptoms of sepsis, including fever, high heart rate and low blood pressure.The most important thing people can do if their doctor detects the fungi, Roberts said, is to notify those they live with or those who are around them in a care facility. In addition, focus on washing hands and not sharing medical equipment before it is disinfected.Although C. auris continues to spread, hospitals and nursing homes can screen people to identify the fungi and potentially isolate them as an infection prevention practice, Roberts said.“I just have low confidence every facility can do that, or even right now we don’t even know how big a problem it is because a lot of places are not testing for this or don’t have the lab capability to even identify it,” Roberts said.Roberts noted that once the fungi has colonized a person, treatment generally focuses on any symptoms that develop.“There’s unfortunately not much to do,” Roberts said. “It’s moreso just awareness that it is on the scan or that it is there in that room.”The-CNN-Wire™ & © 2026 Cable News Network, Inc., a Warner Bros. Discovery Company. All rights reserved.
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