{"title":"中三叠世腔棘鱼Ticinepomis Rieppel 1980的古生物学和古生态学修正(actiistia, Latimeriidae)。","authors":"Christophe Ferrante, Heinz Furrer, Rossana Martini, Lionel Cavin","doi":"10.1186/s13358-023-00276-4","DOIUrl":null,"url":null,"abstract":"<p><p>Coelacanths form today an impoverished clade of sarcopterygian fishes, which were somewhat more diverse during their evolutionary history, especially in the Triassic. Since the first description of the coelacanth <i>Ticinepomis peyeri</i> from the Besano Formation of the UNESCO World Heritage Site of Monte San Giorgio (Canton Ticino, Switzerland), the diversity of coelacanths in the Middle Triassic of this area of the western Paleo-Tethys has been enriched with discoveries of other fossil materials. At Monte San Giorgio, two specimens of <i>Heptanema paradoxum</i> and several specimens of the unusual coelacanth <i>Rieppelia</i> <i>heinzfurreri</i>, have been reported from the Meride Limestone and the Besano Formation, respectively. Another unusual coelacanth, <i>Foreyia maxkuhni</i>, and two specimens referred to <i>Ticinepomis</i> cf. <i>T. peyeri</i> have been described from the isochronous and paleogeographical close Prosanto Formation at the Ducanfurgga and Strel sites (near Davos, Canton Graubünden). In the framework of the revision of the coelacanth material from the Besano Formation kept in the collection of the Paläontologisches Institut und Museum der Universität Zürich (Switzerland), we reviewed the genus <i>Ticinepomis</i> on the basis of the holotype and four new referred specimens. Several morphological traits that were little and/or not understood in <i>T. peyeri</i> are here clarified. We re-evaluate the taxonomic attribution of the material of <i>Ticinepomis</i> cf. <i>T. peyeri</i> from the Prosanto Formation. Morphological characters are different enough from the type species, <i>T. peyeri</i>, to erect a new species, <i>Ticinepomis ducanensis</i> sp. nov., which is shown to be also present in the Besano Formation of Monte San Giorgio, where it is represented by fragmentary bone elements. The recognition of a new coelacanth species indicates that the diversity of this slow-evolving lineage was particularly high in this part of the Western Tethys during the Middle Triassic, especially between 242 and 240 million years ago.</p>","PeriodicalId":56059,"journal":{"name":"Swiss Journal of Palaeontology","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10495523/pdf/","citationCount":"1","resultStr":"{\"title\":\"Revision of the Middle Triassic coelacanth <i>Ticinepomis</i> Rieppel 1980 (Actinistia, Latimeriidae) with paleobiological and paleoecological considerations.\",\"authors\":\"Christophe Ferrante, Heinz Furrer, Rossana Martini, Lionel Cavin\",\"doi\":\"10.1186/s13358-023-00276-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Coelacanths form today an impoverished clade of sarcopterygian fishes, which were somewhat more diverse during their evolutionary history, especially in the Triassic. Since the first description of the coelacanth <i>Ticinepomis peyeri</i> from the Besano Formation of the UNESCO World Heritage Site of Monte San Giorgio (Canton Ticino, Switzerland), the diversity of coelacanths in the Middle Triassic of this area of the western Paleo-Tethys has been enriched with discoveries of other fossil materials. At Monte San Giorgio, two specimens of <i>Heptanema paradoxum</i> and several specimens of the unusual coelacanth <i>Rieppelia</i> <i>heinzfurreri</i>, have been reported from the Meride Limestone and the Besano Formation, respectively. Another unusual coelacanth, <i>Foreyia maxkuhni</i>, and two specimens referred to <i>Ticinepomis</i> cf. <i>T. peyeri</i> have been described from the isochronous and paleogeographical close Prosanto Formation at the Ducanfurgga and Strel sites (near Davos, Canton Graubünden). In the framework of the revision of the coelacanth material from the Besano Formation kept in the collection of the Paläontologisches Institut und Museum der Universität Zürich (Switzerland), we reviewed the genus <i>Ticinepomis</i> on the basis of the holotype and four new referred specimens. Several morphological traits that were little and/or not understood in <i>T. peyeri</i> are here clarified. We re-evaluate the taxonomic attribution of the material of <i>Ticinepomis</i> cf. <i>T. peyeri</i> from the Prosanto Formation. Morphological characters are different enough from the type species, <i>T. peyeri</i>, to erect a new species, <i>Ticinepomis ducanensis</i> sp. nov., which is shown to be also present in the Besano Formation of Monte San Giorgio, where it is represented by fragmentary bone elements. 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引用次数: 1
摘要
腔棘鱼今天形成了一个贫瘠的鳍类鱼类分支,在它们的进化史上,特别是在三叠纪,它们的种类更加多样化。自从联合国教科文组织世界遗产圣乔治山(瑞士提契诺州)贝萨诺组首次描述腔棘鱼Ticinepomis peyeri以来,随着其他化石材料的发现,古特提斯西部这一地区中三叠纪腔棘鱼的多样性得到了丰富。在圣乔治山,分别从梅里德石灰岩和贝萨诺组发现了两个奇异腔棘鱼(Heptanema paradoxum)标本和几个不同寻常的腔棘鱼(Rieppelia heinzfurreri)标本。另一种不同寻常的腔棘鱼,Foreyia maxkuhni,和两个被称为Ticinepomis cf. T. peyeri的标本,在Ducanfurgga和Strel遗址(靠近Davos, Canton graub nden)的等时古地理位置接近Prosanto组中被描述。在对瑞士Universität z rich博物馆(Paläontologisches Institut und Museum der Universität z rich)收藏的贝萨诺组腔棘鱼材料进行修订的框架内,我们根据完整模式和4个新的参考标本对Ticinepomis属进行了审查。在此澄清了一些在赤杨中很少和/或不被了解的形态学特征。我们重新评价了Prosanto组ticinepoomis cf. T. peyeri材料的分类归属。形态学特征与模式种T. peyeri有足够的不同,可以建立一个新种Ticinepomis ducanensis sp. nov.,该新种也被证明存在于Monte San Giorgio的Besano组,在那里它以碎片骨元素为代表。新的腔棘鱼物种的发现表明,在中三叠世,特别是在2.42亿到2.4亿年前,这种缓慢进化的谱系在西特提斯的这部分地区的多样性特别高。
Revision of the Middle Triassic coelacanth Ticinepomis Rieppel 1980 (Actinistia, Latimeriidae) with paleobiological and paleoecological considerations.
Coelacanths form today an impoverished clade of sarcopterygian fishes, which were somewhat more diverse during their evolutionary history, especially in the Triassic. Since the first description of the coelacanth Ticinepomis peyeri from the Besano Formation of the UNESCO World Heritage Site of Monte San Giorgio (Canton Ticino, Switzerland), the diversity of coelacanths in the Middle Triassic of this area of the western Paleo-Tethys has been enriched with discoveries of other fossil materials. At Monte San Giorgio, two specimens of Heptanema paradoxum and several specimens of the unusual coelacanth Rieppeliaheinzfurreri, have been reported from the Meride Limestone and the Besano Formation, respectively. Another unusual coelacanth, Foreyia maxkuhni, and two specimens referred to Ticinepomis cf. T. peyeri have been described from the isochronous and paleogeographical close Prosanto Formation at the Ducanfurgga and Strel sites (near Davos, Canton Graubünden). In the framework of the revision of the coelacanth material from the Besano Formation kept in the collection of the Paläontologisches Institut und Museum der Universität Zürich (Switzerland), we reviewed the genus Ticinepomis on the basis of the holotype and four new referred specimens. Several morphological traits that were little and/or not understood in T. peyeri are here clarified. We re-evaluate the taxonomic attribution of the material of Ticinepomis cf. T. peyeri from the Prosanto Formation. Morphological characters are different enough from the type species, T. peyeri, to erect a new species, Ticinepomis ducanensis sp. nov., which is shown to be also present in the Besano Formation of Monte San Giorgio, where it is represented by fragmentary bone elements. The recognition of a new coelacanth species indicates that the diversity of this slow-evolving lineage was particularly high in this part of the Western Tethys during the Middle Triassic, especially between 242 and 240 million years ago.
期刊介绍:
The Swiss Journal of Palaeontology publishes original research and review articles of interest to the international community in the fields of palaeontology, taxonomy and systematics, while recognising at the same time the importance of documenting high-quality palaeontological data in a regional context. Palaeobiology in combination with alpha taxonomy is a core topic of the journal.
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