Ammonite biostratigraphy of the Sierra del Patrón section (Durango State, Mexico) and its bearing on the lower/upper Aptian boundary of the Central Atlantic Province

2018 ◽  
Vol 88 ◽  
pp. 100-110 ◽  
Author(s):  
J.A. Moreno-Bedmar ◽  
A. Casados-Monroy ◽  
C. Frau ◽  
A. Pictet ◽  
G. Chávez Cabello ◽  
...  
Keyword(s):  
Lower Upper ◽  
Atlantic Province ◽  
Central Atlantic

scholarly journals Shark and ray diversity in the Tropical America (Neotropics)—an examination of environmental and historical factors affecting diversity

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5313 ◽  
Author(s):  
Jorge Domingo Carrillo-Briceño ◽  
Juan D. Carrillo ◽  
Orangel Antonio Aguilera ◽  
Marcelo R. Sanchez-Villagra
Keyword(s):  
Strong Relationship ◽  
Central American ◽  
Historical Background ◽  
Central Pacific ◽  
Factors Affecting ◽  
Atlantic Province ◽  
Historical Factors ◽  
Tropical America ◽  
Geological Units ◽  
Central Atlantic

We present the first comprehensive review of the present and past shark and ray diversity in marine waters of Tropical America, examining the patterns of distribution in the Eastern Central Pacific (EP) and Western Central Atlantic (WA) realms. We identified the major regions of diversity and of endemism, and explored the relations to physical variables. We found a strong relationship between shark and ray diversity with area and coastal length of each province. The Tropical Northwestern Atlantic Province is characterized by high diversity and greater occurrence of endemic species, suggesting this province as the hotspot of sharks and rays in Tropical America. The historical background for the current biogeography is explored and analyzed. Referential data from 67 geological units in 17 countries, from both shallow and deep-water habitats, across five time-clusters from the Miocene to the Pleistocene were studied. New data include 20 new assemblages from six countries. The most diverse Neogene and extant groups of shark and ray are Carcharhiniformes and Myliobatiformes, respectively. The differentiation between Pacific and Atlantic faunas goes to at least the middle Miocene, probably related with the increasing closure of the Central American Seaway acting as a barrier. The highest faunal similarity between the assemblages from the EP and the WA at the early Miocene could be related to the lack of a barrier back then, but increased sampling is needed to substantiate this hypothesis.

Towards an Aptian (Lower Cretaceous) ammonite biostratigraphy of the Mina Texali section, Central Atlantic province (Puebla State, Central Mexico)

2015 ◽  
Vol 54 ◽  
pp. 203-211 ◽  
Author(s):  
J.A. Moreno-Bedmar ◽  
C.C. Mendoza-Rosales ◽  
K.P. Minor ◽  
G. Delanoy ◽  
R. Barragán ◽  
...  
Keyword(s):  
Lower Cretaceous ◽  
Central Mexico ◽  
Atlantic Province ◽  
Central Atlantic

scholarly journals Mucosa plication reinforced colorectal anastomosis and trans-anal vacuum drainage: a pilot study with preliminary results

2021 ◽  
Author(s):  
Alexander Ferko ◽  
Juraj Váňa ◽  
Marek Adámik ◽  
Adam Švec ◽  
Michal Žáček ◽  
...  
Keyword(s):  
Pilot Study ◽  
Povidone Iodine ◽  
Anal Verge ◽  
Colorectal Anastomosis ◽  
Stapled Anastomosis ◽  
Neoadjuvant Radiotherapy ◽  
Lower Upper ◽  
Registration Number ◽  
The Mean ◽  
Diversion Rate

AbstractDehiscence of colorectal anastomosis is a serious complication that is associated with increased mortality, impaired functional and oncological outcomes. The hypothesis was that anastomosis reinforcement and vacuum trans-anal drainage could eliminate some risk factors, such as mechanically stapled anastomosis instability and local infection. Patients with rectal cancer within 10 cm of the anal verge and low anterior resection with double-stapled technique were included consecutively. A stapler anastomosis was supplemented by trans-anal reinforcement and vacuum drainage using a povidone-iodine-soaked sponge. Modified reinforcement using a circular mucosa plication was developed and used. Patients were followed up by postoperative endoscopy and outcomes were acute leak rate, morbidity, and diversion rate. The procedure was successfully completed in 52 from 54 patients during time period January 2019–October 2020. The mean age of patients was 61 years (lower–upper quartiles 54–69 years). There were 38/52 (73%) males and 14/52 (27%) females; the neoadjuvant radiotherapy was indicated in a group of patients in 24/52 (46%). The mean level of anastomosis was 3.8 cm (lower–upper quartiles 3.00–4.88 cm). The overall morbidity was 32.6% (17/52) and Clavien–Dindo complications ≥ 3 grade appeared in 3/52 (5.7%) patients. No loss of anastomosis was recorded and no patient died postoperatively. The symptomatic anastomotic leak was recorded in 2 (3.8%) patients and asymptomatic blind fistula was recorded in one patient 1/52 (1.9%). Diversion ileostomy was created in 1/52 patient (1.9%). Reinforcement of double-stapled anastomosis using a circular mucosa plication with combination of vacuum povidone-iodine-soaked sponge drainage led to a low acute leak and diversion rate. This pilot study requires further investigation.Registered at ClinicalTrials.gov.: Trial registration number is NCT04735107, date of registration February 2, 2021, registered retrospectively.

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