[Most Recent Entries] [Calendar View]
Saturday, February 5th, 2022
| Time | Event | ||||||||
| 3:01a | [Paleontology • 2022] New Materials of Iguanodontians (Dinosauria: Ornithopoda) from the Lower Cretaceous Khok Kruat Formation, Ubon Ratchathani, Thailand
Abstract We describe iguanodontian post-cranial remains, including a cervical vertebra, two dorsal vertebrae, five caudal vertebrae, a metacarpal, right femur, tibia and fibula, and a small femur possibly from a juvenile of the same taxon. This is the first record of a juvenile iguanodontian co-occurring with an adult from Thailand. The material was recovered from the Lower Cretaceous Khok Kruat Formation of Khok Pha Suam, Ubon Ratchathani Province, north-eastern Thailand. It was reconstructed to belong to a non-hadrosauriform styracosternan. This study provides the first osteological description of iguanodontian post-cranial material in Thailand and its potential autapomorphic features. However, whether it belongs to a previously named taxon or represents a new one cannot be assessed yet and must await further discovery. Keywords: Reptilia, Iguanodontia, Khok Pha Suam, Early Cretaceous, Thailand  Adun Samathi and Suravech Suteethorn. 2022. New Materials of Iguanodontians (Dinosauria: Ornithopoda) from the Lower Cretaceous Khok Kruat Formation, Ubon Ratchathani, Thailand. Zootaxa. 5094(2); 301–320. DOI: 10.11646/zootaxa.5094.2.5  | ||||||||
| 7:33a | [Herpetology • 2022] Occidozyga shiwandashanensis • A New Species of Occidozyga Kuhl & van Hasselt, 1822 (Anura: Dicroglossidae) from Southern Guangxi, China
A new species of the genus Occidozyga is reported from Southern Guangxi, China, based on morphological characters and molecular analyses. Morphological data revealed that the new species, Occidozyga shiwandashanensis sp. nov., differs from its congeners by a combination of the following characters: (1) medium body size (SVL 25.2−33.8 mm in males, 34.9−38.9 mm in females); (2) pale brown dorsum with irregular pale dark spots, especially on head; (3) creamy white ventral surface with brown spots on lateral margin and throat; (4) tongue fleshy, rounded, without notch, (5) tympanum hidden; (6) finger webbing absent and toe webbing full, but fourth toe not webbed to discs; (7) tips of fingers pointed, tips of toes rounded, slightly expanded into disc. The new species occurs on Mt. Shiwandashan and inhabits montane evergreen forests at 500−600 m a.s.l.
 Occidozyga shiwandashanensis sp. nov. Diagnosis: Occidozyga shiwandashanensis sp. nov. can be distinguished from its congeners by a combination of the following characters: (1) medium body size (SVL 25.2−33.8 mm in males, 34.9−38.9 mm in females); (2) pale brown dorsum with irregular pale dark spots, especially on dorsal surface of head; (3) creamy white ventral surface with brown spots on lateral margin and throat; (4) tongue fleshy, rounded, without notch, (5) tympanum hidden; (6) finger webbing absent and toe webbing full, but fourth toe not webbed to disc; (7) tips of fingers pointed, tips of toes rounded, slightly expanded into disc; (8) tarsal fold present; (9) eyes laterally oriented. Ecology and distribution: The new species occurs in an evergreen forest at Mt. Shiwandashan between 500−650 m a.s.l. Specimens were found in muddy patches. Advertisement calls were heard during fieldwork, but no amplectant pairs were discovered. Eggs were found near muddy areas attached to plant roots close to but not in water. To date, this species is only known from Mt. Shiwandashan. Etymology: The specific epithet “shiwandashanensis” refers to the type locality, Mt. Shiwandashan. The suggested English name is Shiwandashan Puddle Frog, and the Chinese name is Shi Wan Da Shan Fu Wa (十万大山浮蛙).
Wei-Cai Chen, Wan-Xiao Peng, You-Jun Liu, Zhong Huang, Xiao-Wen Liao and Yun-Ming Mo. 2022. A New Species of Occidozyga Kuhl and van Hasselt, 1822 (Anura: Dicroglossidae) from Southern Guangxi, China. Zoological Research. 43(1); 85-89. DOI: 10.24272/j.issn.2095-8137.2021.252 | ||||||||
| 9:55a | [Botany • 2021] Capparidastrum estrellae (Capparaceae) • Notes on the Genus Capparidastrum and the Description of A New Species from Northwestern Ecuador
Abstract The genus Capparidastrum (Capparaceae) is discussed and C. estrellae, a new tree species endemic to northwestern Ecuador, is described and illustrated. Its conservation status is here assessed as endangered. Keywords: Capparaceae, Ecuador, Capparidastrum estrellae, endemic
Capparidastrum estrellae Cornejo & N. Mejía-Pazos, sp. nov. Etymology: the epithet estrellae of this taxonomic novelty honors Dr. Eduardo Estrella Aguirre (1941–1996), an Ecuadorian researcher, founder of the Ecuador National Museum of Medicine and the great discoverer and editor of the long-lost work Flora Huayaquilensis by Juan Tafalla, a botanical masterpiece and the first flora of present Ecuador from the colonial period, in which the most common species of Capparaceae from coastal Ecuador were documented with splendid handmade, natural-sized illustrations. Habitat and distribution: known from the type in the vicinity of San Miguel de los Bancos toward Saloya, a lower montane secondary wet forest, in which individuals of Capparidastrum estrellae are scattered forest elements at 1230 m and may persist as solitary individuals in open areas. On the basis of field photographs sent by Jaime West to the first author, it is most likely that a second population of this taxonomic novelty occurs at 500 m on the same western side of Pichincha Province. Xavier Cornejo, Nicanor Mejía-Pazos and Mónica Armas Soto. 2021. Notes on the Genus Capparidastrum (Capparaceae) and the Description of C. estrellae, A New Species from Northwestern Ecuador. Harvard Papers in Botany. 26(1); 101–104. DOI: 10.3100/hpib.v26iss1.2021.n4 Resumen. Se comenta el género Capparidastrum (Capparaceae), y se describe e ilustra Capparidastrum estrellae, una nueva especie de árbol endémica del noroccidente de Ecuador. El estado de conservación de Capparidastrum estrellae aquí asignado es en peligro. Palabras claves: Capparaceae, Ecuador, Capparidastrum estrellae, endémica |
| << Previous Day |
2022/02/05 [Calendar] |
Next Day >> |