Arpadites

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Arpadites
Temporal range: Middle-Upper Triassic (Ladinian-Carnian)
Museo delle Grigne - EL88 - Arpadites (Arpadites) szaboi.jpg
Arpadites szaboi
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ceratitida
Family: Trachyceratidae
Subfamily: Arpaditinae
Genus: Arpadites
Mojsisovic, 1879

Arpadites is a genus of ceratitids in the family Trachyceratidae [1] from the Middle and Upper Triassic (Ladinian and Carnian stages) of Nevada (United States), [2] Alps, Italy, Balkans, Himalayas, and Japan. (Arkel et al. 1962, L162)

Contents

The genotype Arpadites arpadis came from the upper Middle Triassic (Ladinian) of the Alps in Europe.

Description

Arpadites, named by Mojsisovics, 1879, is characterized by a compressed, evolute, discoidal shell with radial or faintly sigmoidal ribs; smooth, continuous keels; umbilical tubercles, with or without lateral and ventrolateral tubercles as well; and ceratitic sutures with two lateral lobes (on either side).

Related Research Articles

Nannites is a genus in the ammonoid cephalopods in the order Ceratitida from the middle and upper Triassic of the Alps, named by Mojsisovics (1897). Nannites is the type genus of the Nannitidae which has been placed in the Danubitaceae. Previously the Nannitidae was included in the Ptychitaceae along with the Ptychitidae and, Isculitidae.

<span class="mw-page-title-main">Carnian</span> First age of the Late Triassic epoch

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<span class="mw-page-title-main">Ladinian</span> Age in the Middle Triassic

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<i>Asklepioceras</i> Genus of molluscs (fossil)

Asklepioceras is a genus in the Ceratitid family Arpaditidae from the Middle and Upper Triassic of Italy, Romania, Turkey, and British Columbia (Canada).

Aplococeras is an evolute discoidal ceratitid ammonite from the Middle Triassic Ladinian stage, found in southern Europe and Nevada. Whorl sides are convex, converging on a rounded venter, and are ornamented with slightly flexuous umbilical ribs that disappear outwardly, towards the venter. The suture has two lateral lobes.

<i>Arcestes</i> Genus of molluscs (fossil)

Arcestes is a genus of extinct ceratitid ammonites found in Triassic-aged marine strata.

Bacchites is a genus of extinct ammonoid cephalopods belonging to the ceratitid family Juvavitidae.

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<span class="mw-page-title-main">Trachyceratidae</span> Family of molluscs (fossil)

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<i>Tholodus</i> Extinct genus of reptiles

Tholodus is an extinct genus of basal ichthyopterygian known from the Middle Triassic of Germany, northeastern Italy and possibly China. It was first named by Christian Erich Hermann von Meyer in 1851 and the type species is Tholodus schmidi. It is known from many disarticulated and fragmentary remains, mainly teeth and jaw fragments. Most specimens were collected from various localities across the Ladinian-aged Muschelkalk, Germany, mainly from the Jena Formation of the upper Lower Muschelkalk, where the holotype was found. Dalla Vecchia (2004) recently described two additional specimens, a mandibular ramus and a maxilla, both bearing teeth and nearly uncrushed, and some postcranial remains, from a single late Anisian outcrop, from the southern Alps of Italy. The humerus resembled that of immature individuals of the Asian genus Chaohusaurus, suggesting possible affinities to Grippidia.

<span class="mw-page-title-main">San Cassiano Formation</span>

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The Schlern Formation, also known as Schlern Dolomite, and Sciliar Formation or Sciliar Dolomite in Italy, is a limestone, marl and dolomite formation in the Southern Limestone Alps in Kärnten, Austria and South Tyrol, Italy.

<span class="mw-page-title-main">Allokotosauria</span> Extinct clade of reptiles

Allokotosauria is a clade of early archosauromorph reptiles from the Middle to Late Triassic known from Asia, Africa, North America and Europe. Allokotosauria was first described and named when a new monophyletic grouping of specialized herbivorous archosauromorphs was recovered by Sterling J. Nesbitt, John J. Flynn, Adam C. Pritchard, J. Michael Parrish, Lovasoa Ranivoharimanana and André R. Wyss in 2015. The name Allokotosauria is derived from Greek meaning "strange reptiles" in reference to unexpected grouping of early archosauromorph with a high disparity of features typically associated with herbivory.

The Xiaowa Formation is a Carnian-age geological formation found in southern China. It is a sequence of limestone and marls from the Carnian stage of the Triassic. Its lower section was previously known as the Wayao Formation or Wayao Member of the Falang Formation. In 2002, the Wayao Member was renamed and raised to the Xiaowa Formation to prevent confusion with an Eocene unit of the same name. Crinoids and marine reptiles are abundant in the Xiaowa Formation, forming a lagerstätte known as the Guanling biota. Ammonoids and conodonts found in the formation constrain its age to the early Carnian. Reptiles of the Guanling biota include ichthyosaurs, thalattosaurs, placodonts, and Odontochelys. Sedimentary events within this formation have been tied to the Carnian Pluvial Event.

This list of fossil molluscs described in 2022 is a list of new taxa of fossil molluscs that were described during the year 2022, as well as other significant discoveries and events related to molluscan paleontology that occurred in 2022.

<i>Brotheotrachyceras</i> Genus of molluscs (fossil)

Brotheotrachyceras is a genus of ammonite cephalopod belonging to the order Ceratitida. It was living during the Carnian age of the Late Triassic Epoch.

References

  1. M. Urlichs. 2017. Revision of some stratigraphically relevant ammonoids from the Cassian Formation (latest Ladinian-Early Carnian, Triassic) of St. Cassian (Dolomites, Italy). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 283:173-204
  2. Francis Newlands Johnston. 1941. Trias at New Pass, Nevada (New Lower Karnic Ammonoids). Journal of Paleontology Vol. 15, No. 5 (Sep., 1941), pp. 447-491 (53 pages).

Further reading