Revision of the genera Vinciguerria and †Eovinciguerria from the Oligocene of Romania (Central Paratethys) – comments on selected characters

2020 ◽  
Vol 298 (3) ◽  
pp. 251-267
Author(s):  
Ionut Grădianu ◽  
Tomáš Přikryl ◽  
Růžena Gregorová
Keyword(s):  
Czech Republic ◽  
Original Material ◽  
Systematic Revision ◽  
Character Analysis ◽  
Fossil Species ◽  
Central Paratethys ◽  
Eastern Paratethys ◽  
Caudal Skeleton ◽  
Juvenile Specimen

Five species of the genus Vinciguerria (namely † V. macarovicii, † V. praeattenuata, † V. tal- giensis, † V. obscura, and † V. merklini) were described and/or recorded from Romania. Most of the Eocene and Oligocene fossil species of this genus from the Central and Eastern Paratethys were later grouped in two genera († Sytchewskia and † Eovinciguerria), mainly due to the morphology of the caudal skeleton. A systematic revision of the vinciguerrid phosichthyids from the Oligocene deposits of Piatra-Neamt, Romania (Central Paratethys) is presented herein. Based on the character analysis and relationships of the recent phosichthyid genera, we consider the genus † Eovinciguerria to be invalid and we re-establish the validity of the genus Vinciguerria for the Oligocene species. Morphological comparisons of the original material with well- preserved specimens of † V. obscura from Liten ice (Czech Republic) and contemporary representatives allow us to recognize that † V. macarovicii is a synonym of † V. obscura. Moreover, † V. merklini recorded from the Oligocene deposits of Piatra-Neamt (Romania) represents a juvenile specimen of † V. obscura, contrary to what was previously postulated.

scholarly journals The distribution of <i>Triebelina raripila</i> and <i>Carinocythereis carinata</i> (Ostracoda) from the Middle Miocene of the Central Paratethys and their palaeogeographic implications

1998 ◽  
Vol 17 (2) ◽  
pp. 125-130 ◽  
Author(s):  
J. Szczechura
Keyword(s):  
Shallow Water ◽  
Late Miocene ◽  
Middle Miocene ◽  
Early Miocene ◽  
Central Paratethys ◽  
Eastern Paratethys ◽  
Main Species ◽  
Late Middle Miocene ◽  
The Mediterranean

Abstract. Late Middle Miocene (Upper Badenian) strata of the Fore-Carpathian Depression of Poland yield a shallow-water ostracod fauna which contains the species Triebelina raripila (G. W. Müller, 1894) and Carinocythereis carinata (Roemer, 1838). The palaeobiogeographic distribution of the two main species suggests, that in the late Middle Miocene, Central Paratethys was still connected to the Mediterranean, although still separated from the Eastern Paratethys and from southeastern Eurasia. The continuous occurrence of Triebelina raripila and Carinocythereis carinata in the Mediterranean basins, from the Early Miocene to Recent, indicates that marine conditions existed throughout, thereby allowing them to survive the Late Miocene salinity crisis.

scholarly journals Dioscorea manchesteri Kvaček, sp. nov., a new fossil species from the early Miocene flora of North Bohemia (Czech Republic)

2019 ◽  
Vol 59 (2) ◽  
pp. 367-371
Author(s):  
Zlatko Kvaček
Keyword(s):  
Czech Republic ◽  
East Asia ◽  
First Record ◽  
Kuril Islands ◽  
Early Miocene ◽  
Subtropical Climate ◽  
Fossil Species ◽  
Warm Temperate

Abstract Using the morphology of fin-winged fruits and accompanying foliage, the author characterizes a new fossil species, Dioscorea manchesteri Kvaček, sp. nov. (Dioscoreaceae), recovered from early Miocene deposits of the Most Basin (North Bohemia, Czech Republic). Dioscorea manchesteri matches the extant Dioscorea polystachya Turcz. in its fruit and foliage morphology. This perennial climbing vine native to China now grows throughout East Asia (Japan, Korea, Kuril Islands, Vietnam) in warm temperate to subtropical climate. The record of Dioscorea manchesteri is the first record of this genus in the European Neogene.

African Trachelomonas saccasii found in a European mesotrophic pond (Czech Republic). Implication for euglenoid biogeography and recommendations for euglenoid flagship species

Phytotaxa ◽  
2018 ◽  
Vol 334 (3) ◽  
pp. 201 ◽  
Author(s):  
JOSEF JURÁŇ ◽  
ALAIN COUTÉ
Keyword(s):  
Czech Republic ◽  
Ivory Coast ◽  
Current Knowledge ◽  
Global Distribution ◽  
Flagship Species ◽  
Original Material ◽  
The Czech Republic ◽  
Worldwide Distribution ◽  
Initial Description ◽  
A New Species

This work reports the identification of Trachelomonas saccasii in a small mesotrophic pond in the Czech Republic. Trachelomonas saccasii was originally described from a small lake in Ivory Coast (West Africa) in 2009. This report from the Czech Republic is the second known record of this taxon after the initial description of this species. Trachelomonas saccasii represents a new species of euglenoid for the Czech Republic and Europe. This finding highlights the current knowledge gaps regarding the biogeography and worldwide distribution of euglenoids. The first aim of this study is to describe the identification of Trachelomonas saccasii using light and scanning electron microscopy and to compare it with the description of the original material from Africa. Second, we discuss the current knowledge of euglenophyte biogeography and propose methods that could be used to explore biogeographical distributions using floristic databases. These methods could be useful especially for the following flagship species: Colacium epiphyticum, C. minimum, Lepocinclis crassicollis, Phacus plicatus, Trachelomonas argentinensis, T. hemispherica and T. magdaleniana. This study provides new data on the global distribution of euglenoids and proposes possible strategies to obtain further information about the global distribution of this group of microorganisms.

A review of the “venomous therocephalian” hypothesis and how multiple re-portrayals of Euchambersia have influenced its success and vice versa

2016 ◽  
Vol 187 (4-5) ◽  
pp. 217-224 ◽  
Author(s):  
Julien Benoit
Keyword(s):  
Venom Gland ◽  
Vertebrate Paleontology ◽  
Original Material ◽  
Review Of The Literature ◽  
Critical Importance ◽  
Fossil Species ◽  
Land Vertebrate ◽  
Scientific Hypotheses

Abstract Euchambersia mirabilis is unique amongst Permo-Triassic therapsids because it has an external maxillary fossa associated with a ridged canine. This anatomy led to the commonly accepted conclusion that the fossa accommodated a venom gland, which would make Euchambersia the earliest known venomous land vertebrate. Indeed, Euchambersia is considered to be the most robustly supported case of an extinct venomous species and serves as a model for infering envenoming capacity in fossil species. Here, a review of the literature on Euchambersia, with special emphasis on canine morphology, shows that this hypothesis is often based on inaccurate drawings of the canine and, for post-1986 authors, it is even based on the assumption that the canine of Euchambersia is grooved, whereas it is actually only ridged. This does not invalidate the venomous therocephalian hypothesis, but nevertheless emphasizes the critical importance of first hand observations of original material for any type of work in vertebrate paleontology. This review offers an interesting example of how observations and the resulting scientific hypotheses interact, grow, and can reciprocally influence each other.

scholarly journals Systematic revision and palaeobiology of Rosenfeldia triasica and Rogeryon oppeli gen. et comb. nov. (Eucrustacea, Polychelida)

2017 ◽  
Author(s):  
Denis Audo ◽  
Günter Schweigert ◽  
Sylvain Charbonnier ◽  
Joachim T. Haug
Keyword(s):  
Shallow Water ◽  
Deep Water ◽  
Late Jurassic ◽  
Late Triassic ◽  
Systematic Revision ◽  
Fossil Species ◽  
Extant Species ◽  
Horseshoe Crabs ◽  
Slow Moving ◽  
First Time

Polychelidan lobsters (Decapoda: Polychelida) are crustaceans with extant species which are restricted to deep water environments. Fossil species, however, used to live in more varied palaeoenvironments, from shallow water to deep water, and were more diverse morphologically. We redescribe two species of polychelidan lobsters, the Late Triassic Rosenfeldia triasica Garassino, Teruzzi & Dalla Vecchia, 1996 and the Late Jurassic Eryon oppeli Woodward, 1866, recently assigned to the same genus, Rosenfeldia, based upon only a few characters. Our investigation of all available material of both species leads us to distinguish these two species and to erect Rogeryon gen. nov. to accommodate Eryon oppeli. The palaeobiology of both species is interpreted for the first time. Rosenfeldia triasica with its stout first pereiopods and mandibles with both incisor and molar processes (documented for the first time in Polychelida) was benthic and probably fed either on slow-moving sedentary preys or was a scavenger. Rogeryon oppeli gen. et comb. nov. was benthic, visually adapted to shallow water palaeoenvironments, and possibly had a diet similar to that of slipper lobsters and horseshoe crabs. The redescription of these two species highlights the palaeobiological diversity of fossil polychelidans.

scholarly journals Calcareous nannofossils from the middle/upper Miocene succession of Pécs-Danitzpuszta, southern Hungary: cosmopolitan Paratethys and endemic Lake Pannon assemblages

2021 ◽  
Vol 151 (3) ◽  
pp. 253-265
Author(s):  
Stjepan Ćorić
Keyword(s):  
Late Miocene ◽  
Short Interval ◽  
Drastic Change ◽  
Calcareous Nannofossils ◽  
Lake Pannon ◽  
Central Paratethys ◽  
Eastern Paratethys ◽  
The Family ◽  
Low Diversity ◽  
Quantitative Analyses

Quantitative analyses on calcareous nannofossils were carried out on 109 middle/late Miocene (Sarmatian/ Pannonian) samples from the section at Pécs-Danitzpuszta sand pit (Hungary). The lower part of the section, which can be assigned to the Sarmatian, contains normal marine low-diversity assemblages dominated by Calcidiscus leptoporus, Reticulofenestra pseudoumbilicus, Sphenolithus moriformis and Syracosphaera spp. accompanied by didemnid ascidian spicules (Perforocalcinela fusiformis). The middle/late Miocene (Sarmatian/Pannonian) boundary is characterized by the last occurrences of normal marine calcareous nannofossils. The upper part of the section (Pannonian) can be subdivided into intervals characterized by monospecific endemic nannofossils Isolithus spp. and ascidians, respectively. A short interval with common endemic coccoliths belonging to the family Noelaerhabdaceae (Bekelithella echinata, Noelaerhabdus bozinovicae, N. jerkovici, Praenoelaerhabdus banatensis) in the upper part of the profile was also documented. The drastic change in nannofossil assemblages at the Sarmatian/Pannonian boundary is a result of paleoenvironmental stress caused by the isolation of the Central Paratethys from the Eastern Paratethys.

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