Form and formation of flares and parabolae based on new observations of the internal shell structure in lytoceratid and perisphinctid ammonoids

Form and formation of flares and parabolae based on new observations of the internal shell structure in lytoceratid and perisphinctid ammonoids

The ultrastructure of pristine shells of Jurassic and Cretaceous lytoceratid and perisphinctid ammonoids indicates that flares and parabolae represent homologous structures. Both mark an interruption of shell growth. We dismiss earlier interpretations of parabolae as actual aperture, relics of resor...

Cur síos iomlán

Sonraí bibleagrafaíochta
Príomhchruthaitheoirí:	Gregor Radtke, René Hoffmann, Helmut Keupp
Formáid:	Alt
Teanga:	English
Foilsithe / Cruthaithe:	Institute of Paleobiology PAS 2016-08-01
Sraith:	Acta Palaeontologica Polonica
Ábhair:	Ammonoidea ultrastructure megastriae temporary aperture episodic growth Jurassic Cretaceous
Rochtain ar líne:	http://www.app.pan.pl/archive/published/app61/app001542015.pdf

Míreanna comhchosúla

The gaudryceratid ammonoids from the Upper Cretaceous of the James Ross Basin, Antarctica
de réir: María E. Raffi, et al.
Foilsithe / Cruthaithe: (2019-09-01)

Upper Mississippian Ammonoids from Arkansas and Oklahoma/
de réir: 382798 Saunders, W Bruce
Foilsithe / Cruthaithe: (1973)

Lower Pennsylvanian ammonoids from the bloyd formation ofArkansas and Oklahoma/
de réir: 382639 McCaleb, James A.
Foilsithe / Cruthaithe: (1968)

Dimorphism in tetragonitid ammonoid Tetragonites minimus from the Upper Cretaceous in Hokkaido, Northern Japan
de réir: DAISUKE AIBA
Foilsithe / Cruthaithe: (2022-12-01)

Scaphitid ammonites from the lower Maastrichtian of Nahoryany (western Ukraine) and discussion on the origin of Hoploscaphites constrictus
de réir: Marcin Machalski
Foilsithe / Cruthaithe: (2024-01-01)

Some perisphinctoid ammonites of the Štramberk Limestone and their dating with associated microfossils (Tithonian to Lower Berriasian, Outer Western Carpathians, Czech Republic)
de réir: Vašíček Zdeněk, et al.
Foilsithe / Cruthaithe: (2017-08-01)

A new type of shell malformation caused by epizoans in Late Jurassic ammonites from Central Russia
de réir: Aleksandr A. Mironenko
Foilsithe / Cruthaithe: (2016-08-01)

Conellae, enigmatic structures on cephalopod shells—shapes, distribution, and formation
de réir: René Hoffmann, et al.
Foilsithe / Cruthaithe: (2019-12-01)

New Middle and Late Anisian (Middle Triassic) ammonoid faunas from northwestern Nevada (USA) : taxonomy and biochronology /
de réir: Monnet, C. (Claude), et al.
Foilsithe / Cruthaithe: (2005)

Upper Tithonian ammonites (Himalayitidae Spath, 1925 and Neocomitidae Salfeld, 1921) from Charens (Drôme, France)
de réir: Frau Camille, et al.
Foilsithe / Cruthaithe: (2016-12-01)

Another lesson from beautiful monsters: the case of 'sex reversals' in the Ammonoidea and their significance
de réir: Camille Frau, et al.
Foilsithe / Cruthaithe: (2021-06-01)

DISCOVERY OF AMMONOID JAW APPARATUS AND ASSOCIATED FEATURES USING REFLECTANCE TRANSFORMATION IMAGING (RTI)
de réir: Daniel Andrés Morón-Alfonso, et al.
Foilsithe / Cruthaithe: (2023-03-01)

Sexual dimorphism in the Bathonian morphoceratid ammonite Polysphinctites tenuiplicatus
de réir: Horacio Parent, et al.
Foilsithe / Cruthaithe: (2016-12-01)

The old and the new plankton: ecological replacement of associations of mollusc plankton and giant filter feeders after the Cretaceous?
de réir: Amane Tajika, et al.
Foilsithe / Cruthaithe: (2018-01-01)

Ontogeny of highly variable ceratitid ammonoids from the Anisian (Middle Triassic)
de réir: Eva Alexandra Bischof, et al.
Foilsithe / Cruthaithe: (2021-03-01)

New findings of rhyncholites in the Middle and Upper Jurassic of Crimea
de réir: A. A. Mironenko, et al.
Foilsithe / Cruthaithe: (2019-03-01)

Morphological variations and geographic distribution of the rare Middle Jurassic ammonite Oecoptychius refractus
de réir: SREEPAT JAIN, et al.
Foilsithe / Cruthaithe: (2023-06-01)

The tornoceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
de réir: Dieter Korn, et al.
Foilsithe / Cruthaithe: (2022-03-01)

The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
de réir: Dieter Korn, et al.
Foilsithe / Cruthaithe: (2022-06-01)

3D-Analysis of a non-planispiral ammonoid from the Hunsrück Slate: natural or pathological variation?
de réir: Julia Stilkerich, et al.
Foilsithe / Cruthaithe: (2017-06-01)

Extreme abundance of ammonoids in mass accumulations from the Late Devonian of the Moroccan Anti-Atlas
de réir: MERLE GREIF, et al.
Foilsithe / Cruthaithe: (2022-09-01)

Geological duration of ammonoids controlled their geographical range of fossil distribution
de réir: Ryoji Wani
Foilsithe / Cruthaithe: (2017-11-01)

Morphological disparity of early ammonoids: A geometric morphometric approach to investigate conch geometry
de réir: NINON ALLAIRE, et al.
Foilsithe / Cruthaithe: (2023-06-01)

<em>LARDAROCERAS</em> GEN. N., A NEW LATE ANISIAN AMMONOID GENUS FROM THE PREZZO LIMESTONE (SOUTHERN ALPS)
de réir: MARCO BALINI
Foilsithe / Cruthaithe: (2017-08-01)

NORIAN AMMONOIDS FROM THE NAYBAND FORMATION (IRAN) AND THEIR BEARING ON LATE TRIASSIC SEDIMENTARY AND GEODYNAMIC HISTORY OF THE IRAN PLATE
de réir: LEOPOLD KRYSTYN, et al.
Foilsithe / Cruthaithe: (2018-12-01)

A turiasaurian sauropod dinosaur from the Early Cretaceous Wealden Supergroup of the United Kingdom
de réir: Philip D. Mannion
Foilsithe / Cruthaithe: (2019-01-01)

Expanding the Mesozoic Record of Early Brachyceran Fly Larvae, including New Larval Forms with Chimera-Type Morphologies
de réir: André P. Amaral, et al.
Foilsithe / Cruthaithe: (2024-04-01)

SELECTED AMMONOID FAUNA FROM PRATI DI STUORES/STUORES WIESEN AND RELATED SECTIONS ACROSS THE LADINIAN-CARNIAN BOUNDARY (SOUTHERN ALPS, ITALY)
de réir: PAOLO MIETTO, et al.
Foilsithe / Cruthaithe: (2008-11-01)

AMMONOIDS FROM THE ZHUGANPO MEMBER OF THE FALANG FORMATION AT NIMAIGU AND THEIR RELEVANCE FOR DATING THE XINGYI FOSSIL-LAGERSTÄTTE (LATE LADINIAN, GUIZHOU, CHINA)
de réir: XIAODONG ZOU, et al.
Foilsithe / Cruthaithe: (2015-11-01)

Postmortem transport in fossil and modern shelled cephalopods
de réir: Margaret M. Yacobucci
Foilsithe / Cruthaithe: (2018-11-01)

The Fossil Record and Diversity of Pycnodontiform Fishes in Non-Marine Environments
de réir: John J. Cawley, et al.
Foilsithe / Cruthaithe: (2024-04-01)

How has our knowledge of dinosaur diversity through geologic time changed through research history?
de réir: Jonathan P. Tennant, et al.
Foilsithe / Cruthaithe: (2018-02-01)

Thalattosuchian crocodylomorphs from European Russia, and new insights into metriorhynchid tooth serration evolution and their palaeolatitudinal distribution
de réir: Mark T. Young, et al.
Foilsithe / Cruthaithe: (2023-08-01)

Late Mesozoic marine Antarctic fishes: future perspectives based on the newly collections recovered in the Ameghino and López de Bertodano Formations
de réir: Soledad Gouiric-Cavalli, et al.
Foilsithe / Cruthaithe: (2017-06-01)

Cretaceous Ichthyosaurs: Dwindling Diversity, or the Empire Strikes Back?
de réir: Maria Zammit
Foilsithe / Cruthaithe: (2012-04-01)

Mode of life and hydrostatic stability of orthoconic ectocochleate cephalopods: Hydrodynamic analyses of restoring moments from 3D printed, neutrally buoyant models
de réir: David J. Peterman, et al.
Foilsithe / Cruthaithe: (2019-09-01)

Early Jurassic ammonites from Alaska /
de réir: Imlay, Ralph Willard, 1908-
Foilsithe / Cruthaithe: (1981)

Jurassic (Oxfordian and late Callovian)ammonites from the Western Interior Region of the United States/
de réir: 329245 Imlay, Ralph W.
Foilsithe / Cruthaithe: (1982)

The cretaceous ammonites of Venezuela/
de réir: 370970 Renz, Otto
Foilsithe / Cruthaithe: (1982)

Failed prey or peculiar necrolysis? Isolated ammonite soft body from the Late Jurassic of Eichstätt (Germany) with complete digestive tract and male reproductive organs
de réir: Christian Klug, et al.
Foilsithe / Cruthaithe: (2021-01-01)