Biosis: Biological Systems 2022-06-15T21:25:02+08:00 Carlos González Open Journal Systems <p><strong>Biosis: Biological Systems (2708-0072)</strong> is an international fully peer-reviewed and Committee on Publication Ethics (COPE) compliant open access Journal that is published online with a quarterly frequency. The goal of this journal is to promote interdisciplinary approaches in Biology and Medicine, at the interface between organismal and the processes of organic evolution in the broadest sense. </p> Phyllotheca douroensis sp. nov., a new equisetalean fossil-species from the Douro Carboniferous Basin (Upper Pennsylvanian; NW Portugal): palaeobiogeographical, systematic and evolutionary implications 2022-02-18T22:31:06+08:00 Catarina Barbosa Pedro Correia João Muchagata Rúben Domingos Artur A. Sá <p>The first occurrence of the fossil-genus <em>Phyllotheca</em> (Equisetales) from the Carboniferous of Portugal is documented and its palaeobiogeographical, systematic and evolutionary significance is assessed. In this paper, we described this new equisetalean fossil as new species, <em>Phyllotheca douroensis</em> sp. nov., found in the Douro Carboniferous Basin (lower Stephanian C/lower Gzhelian, Upper Pennsylvanian), in northwestern Portugal. <em>P. douroensis</em> sp. nov. represents a convergent form of Phyllothecaceae sensu lato (comprises the Angaran Tchernoviaceae and the Gondwanan Gondwanostachyaceae) with closer affinities to Euramerican floral province.</p> 2022-03-23T00:00:00+08:00 Copyright (c) 2022 Catarina Barbosa, Pedro Correia, João Muchagata, Rúben Domingos, Artur A. Sá A Preliminary Review of Dinosaur Track Assemblages from the Tuchengzi Formation in North China 2022-03-03T06:53:54+08:00 Lida Xing Zhang Yu <p>In northern China, mainly within Western Liaoning, Northern Hebei and Beijing, vertebrate skeletons from the Tuchengzi Formation (Upper Jurassic to Lower Cretaceous) are scarce. However, a large number of new dinosaur track discoveries have made in past 10 years. So far, a total of 19 dinosaur track sites have been found in the Tuchengzi Formation, collectively containing 2,637 individual tracks and representing at least 2,091 trackmakers. This track record has become an important sample for understanding the Tuchengzi dinosaur fauna. The abundant Tuchengzi track record includes six non-avian theropod ichnogenera (<em>Asianopodus</em>, <em>Eubrontes</em>, <em>Grallator</em>, <em>Menglongipus</em>, <em>Therangospodus</em>, and <em>Velociraptorichnus</em>), three bird ichnogenera (<em>Aquatilavipes</em>, <em>Pullornipes</em>, and <em>Koreanaornis</em>), two sauropod ichnogenera (<em>Brontopodus</em> and cf. <em>Parabrontopodus</em> isp.), and a possible ornithopod ichnogenus (cf. <em>Dinehichnu</em>). This assemblage is saurischian-dominated, which is consistent with most Jurassic and Cretaceous track sites in China. The presence of deinonychosaurian tracks is consistent with the rich skeletal record from the Yanliao Biota or Jehol Biota, and the bird tracks are consistent with the record of shorebirds in Jehol Biota. The existence of ornithopod tracks is doubtful and needs further discoveries to be confirmed.</p> 2022-03-23T00:00:00+08:00 Copyright (c) 2022 Lida Xing Dinosaur Track from the Jurassic Xiahuayuan Formation of Northern China 2022-03-28T19:20:14+08:00 Lida Xing Martin Lockley Zhitao Wang Jianjun Liu W. Scott Persons IV Bolin Tong Liu Chang <p>An isolated but moderately well-preserved theropod track from the coal-bearing strata of the Zhangjiakou City region of Hebei Province was reported to have originated from the Xiahuayuan Formation, which is considered Middle Jurassic in age. Although the track has a wide divarication angle and length-width ratio reminiscent of Cretaceous tracks like <em>Magnoavipes</em>, it would be speculative to apply this Identification based on a single track. Therefore, it is considered most likely to be a preservational variant of <em>Kayentapus</em>, in which the heel trace is lacking. <em>Kayentapus</em> is widely known from the Lower Jurassic of China. This is the first report of a track or any vertebrate fossil from the Middle Jurassic of this region of Hebei Province, China.</p> 2022-04-01T00:00:00+08:00 Copyright (c) 2022 Lida Xing, Martin Lockley, Zhitao Wang, Jianjun Liu, W. Scott Persons IV, Bolin Tong, Liu Chang Dinosaur Tracks from the Lower Jurassic Lufeng Formation of Northern Central Yunnan, China 2022-03-28T20:01:18+08:00 Lida Xing Martin Lockley Anthony Romilio Tao Wang Liu Chang <p>An increasing number of theropod-dominated tracksites have been reported from the Jurassic and Cretaceous of China. These include a significant number from the Lower Jurassic of the Lufeng Basin, famous for its <em>Lufengosaurus</em> fauna and known for a typical Lower Jurassic globally-distributed tetrapod footprint biochron. Here we report another localized theropod track occurrence regular of various scattered tracksites from the Lufeng Formation. The tracks are medium-sized tridactyl tracks from the basal member of the Zhangjia'ao Member, Lufeng Formation which shows an unusually wide divarication between the traces of digits III and IV, which suggest several possible interpretations.</p> 2022-04-01T00:00:00+08:00 Copyright (c) 2022 Lida Xing, Martin Lockley, Anthony Romilio, Tao Wang, Liu Chang A 3-Day Geological Field Trip in Qatar 2022-06-15T21:25:02+08:00 Jacques LeBlanc <p>The author learned first-hand about the surface stratigraphy and geology of Qatar by dedicating most of his weekends at conducting field works and public guided field tours from 2007 to 2020 while employed by Qatar Petroleum (now QatarEnergy). Here, he summarizes his knowledge of the surface geology of Qatar in a 3-Day field trip designed to provide the participants a hands-on overview of the stratigraphy of the country. The field trip is based on his publication (LeBlanc, 2021) which is an integral part of this geological tour (the participants are referred to it on several occasions) and his other geological publications on Qatar referenced herein (LeBlanc, 2008, 2009, 2014, 2015, 2017, 2019). During this 3-day field trip, outcrops of the Lower Eocene Rus Formation, Middle Eocene Dammam Formation, Lower Miocene Dam Formation, Mio-Pliocene Hofuf Formation, as well as Pleistocene and Holocene deposits will be visited. The fieldtrip’s aim is to help the participants at recognizing the various formations and their members, as well as the most obvious features (faults, folds, dissolution, mineralization, fossils, etc..) that characterize them.</p> 2022-06-20T00:00:00+08:00 Copyright (c) 2022 Jacques LeBlanc