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Thursday, October 27th, 2022
| Time | Event | ||||||||||
| 7:37a | [Botany • 2022] Allmania multiflora (Amaranthaceae) • A New Species from India; First Molecular and Morphometric Data for the Genus Allmania
Abstract First molecular and morphometric investigations for the genus Allmania are presented. A new species of Allmania from the granite hillocks of Palakkad district (Kerala state, India), is described as A. multiflora. It differs from A. nodiflora by shape and length of tepals, diameter of the gynoecium, diameter and hairiness of seeds, length of bracts, length and hairiness of peduncles, number of flowers per synflorescence, colour of stigma, and occurrence of setae associated with the aril. Furthermore, sequence analysis of chloroplast genes (rbcL and matK) also support the distinctness of the new taxon. Original illustrations, photographs, and ecological data are also provided, as well as an evaluation of the conservation status. Keywords: Eudicots, Allmania nodiflora, Caryophyllales, Palakkad, typification    Allmania multiflora Arya Sindhu, Duilio Iamonico, Veerankutty Suresh and Venugopalan Nair Saradhamma Anil Kumar. 2022. First Molecular and Morphometric Data for the Genus Allmania (Amaranthaceae), with the Description of A New Species from India. Phytotaxa. 559(3); 221-237. DOI: 10.11646/phytotaxa.559.3.1 | ||||||||||
| 10:33a | [Paleontology • 2022] Cranial Osteology and Palaeobiology of the Early Cretaceous Bird Jeholornis prima (Aves: Jeholornithiformes)
Abstract Jeholornis is a representative of the earliest-diverging bird lineages, providing important evidence of anatomical transitions involved in bird origins. Although ~100 specimens have been reported, its cranial morphology remains poorly documented owing to poor two-dimensional preservation, limiting our understanding of the morphology and ecology of the key avian lineage Jeholornithiformes, in addition to cranial evolution during the origin and early evolution of birds. Here, we provide a detailed description of the cranial osteology of Jeholornis prima, based primarily on high-quality, three-dimensional data of a recently reported specimen. New anatomical information confirms the overall plesiomorphic morphology of the skull, with the exception of the more specialized rostrum. Data from a large sample size of specimens reveal the dental formula of J. prima to be 0–2–3 (premaxillary–maxillary–dentary tooth counts), contrary to previous suggestions that the presence of maxillary teeth is diagnostic of a separate species, Jeholornis palmapenis. We also present evidence of sensory adaptation, including relatively large olfactory bulbs in comparison to other known stem birds, suggesting that olfaction was an important aspect of Jeholornis ecology. The digitally reconstructed scleral ring suggests a strongly diurnal habit, supporting the hypothesis that early-diverging birds were predominantly active during the day. Keywords: dentition, diurnality, Jehol Biota, neurocranium     Han Hu, Yan Wang, Matteo Fabbri, Jingmai K O’Connor, Paul G Mcdonald, Stephen Wroe, Xuwei Yin, Xiaoting Zheng, Zhonghe Zhou and Roger B J Benson. 2022. Cranial Osteology and Palaeobiology of the Early Cretaceous bird Jeholornis prima (Aves: Jeholornithiformes). Zoological Journal of the Linnean Society. zlac089. DOI: 10.1093/zoolinnean/zlac089 https://phys.org/news/2022-10-fossil-bir | ||||||||||
| 3:52p | [Herpetology • 2022] Chiasmocleis abofoa • A New Species of Chiasmocleis Méhely, 1904 (Anura: Microhylidae) from the Peruvian Amazonia
Abstract We describe a new species of Chiasmocleis from the Amazonian forest of Peru. The new species is characterized by its medium size (snout-to-vent length = 18.2–20.8 mm in females, and 16.5 mm in one male), hands and feet with slightly developed fridges in females (more developed in male), and presence of a femoral line in all individuals. We also infer its phylogenetic position using DNA sequences of fragments of the mitochondrial genes for 16S rRNA and cytochrome oxidase subunit 1 (COI), and describe the mineralized skeleton through 3D models generated by computed tomography (CT-scan). Based on our results, we discuss the variation of some osteological characters traditionally used in the systematics of the genus. Keywords: Amphibia, CT-scan, morphology, osteology, phylogeny, subgenus, taxonomy 
Chiasmocleis abofoa sp. nov. Omar Rojas-Padilla, Giussepe Gagliardi-Urrutia, Ehiko J. Rios-Alva and Santiago Castroviejo-Fisher. 2022. A New Species of Chiasmocleis Méhely, 1904 (Anura: Microhylidae) from the Peruvian Amazonia. Zootaxa. 5195(1); 24-50. DOI: 10.11646/zootaxa.5195.1.2   |
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