IF 1.6 4区地球科学

Geobios Pub Date : 2024-06-01 DOI: 10.1016/j.geobios.2023.12.004

Ramanand Sagar , Vivesh V. Kapur , Kamlesh Kumar , P. Morthekai , Anupam Sharma , Sunil K. Shukla , Amit K. Ghosh , Gaurav Chauhan , M.G. Thakkar

{"title":"First record of Chelonian coprolites from the Early-Middle Miocene Kutch Basin, western India, and their palaeodietary and palaeobiological implications","authors":"Ramanand Sagar , Vivesh V. Kapur , Kamlesh Kumar , P. Morthekai , Anupam Sharma , Sunil K. Shukla , Amit K. Ghosh , Gaurav Chauhan , M.G. Thakkar","doi":"10.1016/j.geobios.2023.12.004","DOIUrl":"https://doi.org/10.1016/j.geobios.2023.12.004","url":null,"abstract":"<div>In this paper, we provide the first data on large (cm-sized) coprolites (represented by three morphotypes) comprising a rare occurrence of eight specimens from a total of three vertebrate-bearing horizons identified within the Early Miocene (Aquitanian) Khari Nadi Formation and Middle Miocene (Burdigalian-Langhian) Chassra Formation, Kutch Basin, western India. The geochemical data confirm the phosphatic character of the investigated ichnofossils. The dominance of partly digested bone matter and presence of plant remains in all the three coprolite morphotypes reflects the omnivorous diet of the producers, which were most likely chelonians. The occurrence of an inclusion (in a coprolite specimen recorded in this study) showcasing an ultrastructure similar to mammalian dental enamel is a rarity in Neogene coprolite records. Additional biotic inclusions observed in the investigated coprolites include ostracods (assigned to genera Paractinocythereis, Hermanites, and Propontocypris); large planispiral benthic foraminifera including the genus Quinqueloculina; uniserial and biserial benthic foraminifera belonging to genus Textularia; marine calcareous algae genus Actinoporella; chrysophytes (resting spores or cysts of planktonic algae); sponge spicules (represented by the morphotypes Acanthoxea and Strongyle); freshwater diatom genus Aulacoseira; unidentified fungal remains; and phytoliths. Taken together, the biotic and abiotic (e.g., pyrite) inclusions, geochemical data and associated microbiota suggest that these ichnofossils were deposited in a dominantly coastal marine (intertidal) setting linked to a lacustrine/palustrine environment.</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"84 ","pages":"Pages 83-101"},"PeriodicalIF":1.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141298319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The rodent fauna from Prat de Cest (Aude, France) and its biochronological implications for the Early Miocene Prat de Cest（法国奥德省）的啮齿动物群及其对早中新世的生物年代学影响

IF 1.6 4区地球科学

Geobios Pub Date : 2024-06-01 DOI: 10.1016/j.geobios.2023.12.005

Vincent Luccisano , Xavier Valentin , Géraldine Garcia , Vincent Lazzari

{"title":"The rodent fauna from Prat de Cest (Aude, France) and its biochronological implications for the Early Miocene","authors":"Vincent Luccisano , Xavier Valentin , Géraldine Garcia , Vincent Lazzari","doi":"10.1016/j.geobios.2023.12.005","DOIUrl":"https://doi.org/10.1016/j.geobios.2023.12.005","url":null,"abstract":"<div>The new Prat de Cest locality (Narbonne-Sigean Basin, Aude, France) provides a rodent fauna composed of Pseudocricetodon thaleri, Simplomys aff. aljaphi, Vasseuromys cf. bergasensis, Plesiosminthus myarion and Rhodanomys occitanensis nov. sp. Eomyidae account for more than 78% of the material collected and reflect a humid and forested environment. The presence of Plesiosminthus myarion and Simplomys aff. aljaphi, the evolutionary stage of Pseudocricetodon thaleri, close to the population of Coderet (MP30) but displaying some derived characters shared by Early Miocene populations, and the intermediate morphology and size of R. occitanensis nov. sp. between Rhodanomys transiens and Rhodanomys schlosseri support a basal MN1 age for Prat de Cest. The glirid Vasseuromys cf. bergasensis is the first occurrence of this genus outside Spain and could also be the first occurrence of Vasseuromys bergasensis in the Early Miocene. The unique faunal association found in Prat de Cest paves the way for a possible subdivision of the MN1 biozone.</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"84 ","pages":"Pages 45-63"},"PeriodicalIF":1.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141298317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Not too fast: Maximum running speed estimation of the Miocene rheid Opisthodactylus kirchneri (Aves, Rheidae) 不要太快:中新世黑齿蛇(蛇目，黑齿蛇科)的最大奔跑速度估计

IF 1.6 4区地球科学

Geobios Pub Date : 2024-04-01 DOI: 10.1016/j.geobios.2023.03.006

Washington W. Jones , Raúl I. Vezzosi , Blanco R. Ernesto

引用次数: 0

New avian remains from the early Eocene of La Borie, southern France 法国南部La Borie始新世早期的新鸟类遗骸

IF 1.6 4区地球科学

Geobios Pub Date : 2024-04-01 DOI: 10.1016/j.geobios.2022.10.004

Cécile Mourer-Chauviré , Estelle Bourdon , Sylvain Duffaud , Guy Le Roux , Yves Laurent

{"title":"New avian remains from the early Eocene of La Borie, southern France","authors":"Cécile Mourer-Chauviré , Estelle Bourdon , Sylvain Duffaud , Guy Le Roux , Yves Laurent","doi":"10.1016/j.geobios.2022.10.004","DOIUrl":"10.1016/j.geobios.2022.10.004","url":null,"abstract":"<div>The giant flightless bird Gastornis laurenti Mourer-Chauviré and Bourdon, 2020, has been described from a mandible, maxilla and quadrate discovered in the early Eocene locality of La Borie (middle Ypresian, reference level MP 8–9). This locality has yielded abundant fossil vertebrates. We describe here new postcranial remains of G. laurenti, a coracoideum assigned to Tegulavis corbalani nov. gen., nov. sp. (cf. Galliformes), a tarsometatarsus attributed to Papulavis annae nov. gen., nov. sp. (cf. Aramidae), and the tibiotarsus of a small gruiform related to either Walbeckornis or Messelornithidae. The study of the postcranial material confirms that the species G. laurenti differs from other species of Gastornis in many features. The avifauna from La Borie is not very diversified but matches well with the paleoenvironment, which consists of an alluvial flood plain with sparse vegetation, in a tropical climate.LSID of publication: urn: lsid: zoobank.org: pub: 5BA44166-BBEZ-41E7-BG8C-8A1DBCBA14AB.</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"83 ","pages":"Pages 61-84"},"PeriodicalIF":1.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47356118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Jaw anatomy of Vegavis iaai (Clarke et al., 2005) from the Late Cretaceous Antarctica, and its phylogenetic implications 晚白垩纪南极洲Vegavis iaai的颌骨解剖（Clarke et al.，2005）及其系统发育意义

IF 1.6 4区地球科学

Geobios Pub Date : 2024-04-01 DOI: 10.1016/j.geobios.2023.03.004

Gerardo P. Álvarez-Herrera , Sebastián Rozadilla , Federico L. Agnolín , Fernando E. Novas

{"title":"Jaw anatomy of Vegavis iaai (Clarke et al., 2005) from the Late Cretaceous Antarctica, and its phylogenetic implications","authors":"Gerardo P. Álvarez-Herrera , Sebastián Rozadilla , Federico L. Agnolín , Fernando E. Novas","doi":"10.1016/j.geobios.2023.03.004","DOIUrl":"10.1016/j.geobios.2023.03.004","url":null,"abstract":"<div>Vegavis iaai is without any doubt the most complete and well-known Mesozoic bird from Antarctica. In spite of being known by several specimens, its highly specialized postcranial anatomy has obscured the recognition of its phylogenetic affinities. Skull material from Vegavis is scarce, and the lower jaw is known by a relatively well-preserved articular region of a partially articulated specimen (MACN-PV 19.748). The aim of the present contribution is to describe this articular region and to analyze its potential phylogenetic information. The articular region of Vegavis shows a unique combination of characters that separates it from most Mesozoic lineages. On the contrary, its anatomy is congruent with that of neornithine birds, and particularly from the neoavian clade Aequorlitornithes. Detailed comparisons led to the recognition of several shared features, including a well-developed transverse crest posterior to the articular cotyles, that bears a well-developed lateral tubercle; a short and ventrally deflected retroarticular process; a dorsally exposed posterior fossa; tree cotyles for jaw articulation, with a well-developed caudal cotyle fused to the medial cotyle; and lateral crest anteriorly projected with respect to the lateral cotyle. The three-cotyle articulation of the jaw of Vegavis invited us to review skull anatomy of its close kin Polarornis. A review of the bones of Polarornis indicates that the element previously identified as a quadrate is an uncertain bone, and thus, skull-jaw articulation of this taxon remains unknown. In contrast with previous contributions, we were not able to find diagnostic features of the Galloanserae clade on Vegavis jaw. The neoavian-like jaw of Vegavis contrasts with the anseriform signature of its postcranium, suggesting that this bird held some kind of morphological mosaicism on its skeleton.</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"83 ","pages":"Pages 11-20"},"PeriodicalIF":1.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47743886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Halcyornithidae from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK): A species complex of Paleogene arboreal birds 纳泽河畔沃尔顿始新世早期伦敦粘土中的Halcyornithidae（英国埃塞克斯郡）：古近纪树栖鸟类的一个物种复合体

IF 1.6 4区地球科学

Geobios Pub Date : 2024-04-01 DOI: 10.1016/j.geobios.2023.06.003

Gerald Mayr , Andrew C. Kitchener

{"title":"The Halcyornithidae from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK): A species complex of Paleogene arboreal birds","authors":"Gerald Mayr , Andrew C. Kitchener","doi":"10.1016/j.geobios.2023.06.003","DOIUrl":"10.1016/j.geobios.2023.06.003","url":null,"abstract":"<div>We report fossils of the Halcyornithidae from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK). The material includes remains of nine individuals of these small zygodactyl birds, which belong to at least seven different species, two of which are newly described. This documents a high species richness of halcyornithids in the London Clay, and these birds apparently underwent a significant radiation in the early Paleogene. One of the specimens includes a skull with a proportionally much smaller neurocranium than in Pseudasturides macrocephalus from Messel, suggesting an increased encephalization of halcyornithids towards the middle Eocene. A previously undescribed variation in sternum morphology of halcyornithids distinguishes the fossils we assign to the taxa Pulchrapollia and Cyrilavis and indicates that halcyornithids occupied disparate ecological niches. Furthermore, sternum morphology supports a sister group relationship between the halcyornithid taxa Pulchrapollia and Pseudasturides. The closest extant relatives of the Halcyornithidae remain elusive, but our new osteological data substantiate the hypothesis of a sister group relationship to the Messelasturidae, another group of Eocene birds with zygodactyl feet.[http://zoobank.org/urn:lsid:zoobank.org:pub:DDC1768F-1389-4F36-92F6-46DA318A0C19<svg><path></path></svg>].</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"83 ","pages":"Pages 45-60"},"PeriodicalIF":1.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48063301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Holocene vertebrate assemblages provide the first evidence for the presence of the barn owl (Tytonidae, Tyto alba) on Socotra Island (Yemen) 全新世脊椎动物组合首次证明了在索科特拉岛（也门）上存在仓鸮（Tytonidae，Tyto alba）

IF 1.6 4区地球科学

Geobios Pub Date : 2024-04-01 DOI: 10.1016/j.geobios.2023.03.005

Gloria Ramello , Massimo Delfino , Emiliano Mori , Andrea Viviano , Giulio Pavia , Giorgio Carnevale , Marco Pavia

{"title":"Holocene vertebrate assemblages provide the first evidence for the presence of the barn owl (Tytonidae, Tyto alba) on Socotra Island (Yemen)","authors":"Gloria Ramello , Massimo Delfino , Emiliano Mori , Andrea Viviano , Giulio Pavia , Giorgio Carnevale , Marco Pavia","doi":"10.1016/j.geobios.2023.03.005","DOIUrl":"10.1016/j.geobios.2023.03.005","url":null,"abstract":"<div>We describe the vertebrate remains found in a Holocene deposit inside the Taiti Cave, Socotra Island (Yemen). The fossils were found in a sand dune occupying almost entirely the main cavity of the Cave, with some bones collected on the surface and the majority of them found under its surface, in particular below a tiny level of hardened sand, the latter probably related to a guano deposit. They were mostly isolated bones, but under the guano layer, some of them were aggregated and recognizable as belonging to owl pellets. The analysis of the vertebrate remains reveals a great prey diversity and, together with the location of the pellet accumulation and the almost perfect preservation of the remains, indicates that the deposit derived from a pellet accumulation made by Tyto alba. This hypothesis is corroborated by a Tyto alba beak fragment found in the Hoq cave, in a deposit of uncertain stratigraphic context. The data presented herein represent the first documented evidence of the presence of Tyto alba on Socotra Island and indicate the probable existence of a now extinct population of Tyto alba on the island during the Holocene, already extinct at the time of the first ornithological surveys during the XIX Century.</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"83 ","pages":"Pages 85-98"},"PeriodicalIF":1.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0016699523000621/pdfft?md5=6367b6d8846566996869672fb3da573c&pid=1-s2.0-S0016699523000621-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46154462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Jean-Christophe Balouet (12 november 1956 – 30 march 2021) 让-克里斯托夫-巴鲁埃（1956 年 11 月 12 日 - 2021 年 3 月 30 日）

IF 1.6 4区地球科学

Geobios Pub Date : 2024-04-01 DOI: 10.1016/j.geobios.2023.11.001

Antoine Louchart

引用次数: 0

Osteological and historical data on extinct island night herons (Aves: Ardeidae), with special reference to Ascension Island, the Mascarenes and Bonin Islands 已灭绝的岛夜鹭（Aves:Ardeidae）的骨骼学和历史数据，特别是阿森松岛、马斯卡伦斯和博宁群岛

IF 1.6 4区地球科学

Geobios Pub Date : 2024-04-01 DOI: 10.1016/j.geobios.2023.01.009

Julian P. Hume

{"title":"Osteological and historical data on extinct island night herons (Aves: Ardeidae), with special reference to Ascension Island, the Mascarenes and Bonin Islands","authors":"Julian P. Hume","doi":"10.1016/j.geobios.2023.01.009","DOIUrl":"10.1016/j.geobios.2023.01.009","url":null,"abstract":"<div>Night herons of the genus Nycticorax and Nyctanassa are adept island colonisers, occurring on a number of oceanic islands and island archipelagos. Continental species and those inhabiting large islands are generally not considered threatened, whereas night herons restricted to small, oceanic islands are particularly vulnerable to human interference. As a result, six out of nine described species and one subspecies, all derived from Nycticorax nycticorax, Nycticorax caledonicus or Nyctanassa violacea, are now extinct whereas a further three extinct species await description. The extinct island endemics generally exhibit morphological adaptations to an insular environment and diet, such as an increase or decrease in size, robust jaws and legs, and smaller wings with associated reduced flying ability than founding stock. Here I present an osteological comparison along with historical descriptions of the extinct, oceanic island night herons, with special reference to the Mascarene and Ascension fossil species, and Bonin Island subspecies, and show the degree of morphological changes between the founding and island taxa. I further discuss the reasons why they became extinct.</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"83 ","pages":"Pages 21-38"},"PeriodicalIF":1.6,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0016699523000591/pdfft?md5=7f61c0717ebfc4b21be013d0e616e135&pid=1-s2.0-S0016699523000591-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45635016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Middle and Upper Ordovician linguliformean and craniiformean brachiopods from the Brabant Massif, Belgium: Infaunal giants, encrusting forms and durophagy 比利时布拉班特地区中、上奥陶统舌形和颅形腕足动物:巨型动物、壳壳形态和嗜硬食

IF 1.6 4区地球科学

Geobios Pub Date : 2023-12-01 DOI: 10.1016/j.geobios.2023.04.002

Yves Candela , Bernard Mottequin

{"title":"Middle and Upper Ordovician linguliformean and craniiformean brachiopods from the Brabant Massif, Belgium: Infaunal giants, encrusting forms and durophagy","authors":"Yves Candela , Bernard Mottequin","doi":"10.1016/j.geobios.2023.04.002","DOIUrl":"10.1016/j.geobios.2023.04.002","url":null,"abstract":"<div>Linguliformean and craniiformean brachiopods from the Middle and Upper Ordovician of the Brabant Massif (Belgium) are described for the first time and their palaeoecological and palaeobiogeographical implications are discussed. The restricted and generally poorly preserved material was collected from the Abbaye de Villers (Dapingian–Darriwilian) Formation and from the Katian Huet and Fauquez formations. The dark graptolitic mudstones of the latter unit yielded the most diverse assemblage including seven pseudolingulid, obolid, discinid, and craniopsid species while the Abbaye de Villers and Huet formations only yielded one species each. Due to the scarcity of internal morphological details available, comparison of the pseudolingulid and obolid specimens under investigation here was undertaken by running a Principal Component Analysis using a Log-Shape Ratio transformation of linear measurements. The study of valve shape changes at various growth stages helped identify these Belgian specimens at the family and generic levels. Finally, two unusually long (up to 20 mm) shell repair scars are documented in Pseudolingula and reflect predatory attacks at the anterior margin during early growth stages.</div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"81 ","pages":"Pages 101-119"},"PeriodicalIF":1.6,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42488186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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