scholarly journals The debated question of asymmetrical rhynchonellids (Brachiopoda, Rhynchonellida): examples from the Late Cretaceous of Western Europe

2020 ◽  
Vol 191 ◽  
pp. 1
Author(s):  
Danièle Gaspard ◽  
Sylvain Charbonnier
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Western Europe ◽  
Anterior Margin ◽  
Morphological Diversity ◽  
New Genera ◽  
New Material ◽  
A New Species ◽  
Se France ◽  
Sw France

Many Cretaceous asymmetrical rhynchonellid brachiopods (Brachiopoda, Rhynchonellida) have long been considered as Rhynchonella difformis (Valenciennes in Lamarck, 1819). After a revision, Owen (1962) included the Cenomanian specimens from Europe in Cyclothyris M’Coy, 1844. Later, Manceñido et al. (2002) confirmed this decision and critically mentioned the name of another asymmetrical rhynchonellid genus from Spain, Owenirhynchia Calzada in Calzada and Pocovi, 1980. Specimens with an asymmetrical anterior margin (non particularly ecophenotypical), from the Late Coniacian and the Santonian of Les Corbières (Aude, France) and Basse-Provence (SE France) are here compared to specimens of the original Cenomanian species C. difformis. They are also compared to new material from the Northern Castilian Platform (Coniacian-Santonian, N Spain) and to Rhynchonella globata Arnaud, 1877 (Campanian, Les Charentes, Dordogne, SW France) and Rh. vesicularis Coquand, 1860 (Campanian, Charente, SW France). These observations document the great morphological diversity among all these species and lead us to erect a new species: Cyclothyris grimargina nov. sp. from the type material of Arnaud, and two new genera: Contortithyris nov. gen. including Contortithyris thermae nov. sp., Beaussetithyris nov. gen. including Beaussetithyris asymmetrica nov. sp. All of these brachiopods fundamentally present an asymmetrical state which origin is discussed.

scholarly journals The firstCaipirasuchus(Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5594 ◽  
Author(s):  
Agustín G. Martinelli ◽  
Thiago S. Marinho ◽  
Fabiano V. Iori ◽  
Luiz Carlos B. Ribeiro
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Field Work ◽  
Lower Portion ◽  
Main Subject ◽  
Vertebrate Fauna ◽  
Paulo State ◽  
New Material ◽  
Fish Remains ◽  
A New Species

Field work conducted by the staff of the Centro de Pesquisas Paleontológicas Llewellyn Ivor Price of the Universidade Federal do Triângulo Mineiro since 2009 at Campina Verde municipality (MG) have resulted in the discovery of a diverse vertebrate fauna from the Adamantina Formation (Bauru Basin). The baurusuchidCampinasuchus diniziwas described in 2011 from Fazenda Três Antas site and after that, preliminary descriptions of a partial crocodyliform egg, abelisaurid teeth, and fish remains have been done. Recently, the fossil sample has been considerably increased including the discovery of several, partially articulated fish remains referred to Lepisosteiformes and an almost complete and articulated skeleton referred to a new species ofCaipirasuchus(Notosuchia, Sphagesauridae), which is the main subject of this contribution. At present, this genus was restricted to the Adamantina Formation cropping out in São Paulo state, with the speciesCaipirasuchus montealtensis,Caipirasuchus paulistanus, andCaipirasuchus stenognathus. The new material represents the holotype of a new species,Caipirasuchus mineirusn. sp., diferenciated from the previously ones due to the following traits: last two maxillary teeth located posterior to anterior edge of infraorbital fenestra, elongated lateroventral maxillo-jugal suture—about ½ the anteroposterior maxillar length—and contact between posterior crest of quadrate and posterior end of squamosal forming an almost 90° flaring roof of the squamosal, among others.C. mineiruswas found in the same outcrop thanCampinasuchusbut stratigraphically the former occurs in the lower portion of the section with no unambiguous data supporting the coexistance of both taxa.

scholarly journals Adocus Kohaku, A New Species of Aquatic Turtle (Testudines: Cryptodira: Adocidae) from the Late Cretaceous of Kuji, Iwate Prefecture, Northeast Japan, with Special References to the Geological Age of the Tamagawa Formation (Kuji Group) LSID urn:lsid:zoobank.org:act:61376EEE-A386-416E-98AE-FF64FE2597A2

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Ren Hirayama
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Morphological Diversity ◽  
Eastern Asia ◽  
Geological Age ◽  
Iwate Prefecture ◽  
A New Species

A nearly complete shell of the genus Adocus (Adocidae; Pan-Trionychia; Cryptodira; Testudines) was collected from the late Cretaceous (Turonian) Tamagawa Formation of Kuji Group at Kuji City, Iwate Prefecture, northeast Japan. This turtle shows unique features such as the loss of cervical scute, extreme expansion of marginal scutes overlying costal plates, and exclusion of the humeral- pectoral sulcus from entoplastron. Thus, A. kohaku is erected as a new species. As A. kohaku shows most derived position of A. kohaku within this genus, morphological diversity of the genus Adocus seems to have occurred rather early in its evolution in Eastern Asia.

New data on gastropod genus Hirsuticyclus (Caenogastropoda, Cyclophoridae) from mid-Cretaceous Kachin amber

2021 ◽  
pp. SP521-2021-127
Author(s):  
Tingting Yu
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Characteristics ◽  
Morphological Diversity ◽  
First Record ◽  
Land Snail ◽  
Generic Diagnosis ◽  
Burmese Amber ◽  
New Material ◽  
A New Species

AbstractThe genus Hirsuticyclus Neubauer, Xing & Jochum, 2019 was the first record of an exceptionally preserved land snail with dense periostracal hairs from mid-Cretaceous Kachin (Burmese) amber. Here we document four newly-discovered shells from Kachin amber, one belonging to the type species Hirsuticyclus electrum Neubauer, Xing & Jochum, 2019 and the remaining three shells belonging to a new species, Hirsuticyclus canaliculatus sp. nov. Well-preserved morphological characteristics of these two species could be clearly demonstrated under light microscopy combined with modern micro-CT scans with computer 3D reconstructions. Our new material of the type species amends the generic diagnosis based on a better-preserved shell including the peristome and operculum. The new species shows distinctive shell characteristics such as numerous spiral keels and a flaring, folded peristome interrupted by two canals. These excellently preserved fossils contribute to our understanding of the morphological diversity and evolution of these ancient members of cyclophoroids.

Middle Cambrian arthropods from Utah

2008 ◽  
Vol 82 (2) ◽  
pp. 238-254 ◽  
Author(s):  
Derek E. G. Briggs ◽  
Bruce S. Lieberman ◽  
Jonathan R. Hendricks ◽  
Susan L. Halgedahl ◽  
Richard D. Jarrard
Keyword(s):  
New Species ◽  
New Genera ◽  
Burgess Shale ◽  
Separate Species ◽  
Middle Cambrian ◽  
Stem Group ◽  
New Material ◽  
A New Species

The Middle Cambrian Spence Shale Member (Langston Formation) and Wheeler and Marjum Formations of Utah are known to contain a diverse soft-bodied fauna, but important new paleontological material continues to be uncovered from these strata. New specimens of anomalocaridids include the largest and smallest near complete examples yet reported from Utah. New material of stem group arthropods includes two new genera and species of arachnomorphs: Nettapezoura basilika and Dicranocaris guntherorum. Other new arachnomorph material includes a new species of Leanchoilia comparable to L. protogonia Simonetta, 1970; Leanchoilia superlata? Walcott, 1912; Sidneyia Walcott, 1911a; and Mollisonia symmetrica Walcott, 1912. L. protogonia from the Burgess Shale is confirmed as a separate species and is not a composite fossil. The first example of the trilobite Elrathia kingii preserving traces of the appendages is described. In addition, new material of the bivalved arthropods Canadaspis Novozhilov in Orlov, 1960; Branchiocaris Briggs, 1976; Waptia Walcott, 1912; and Isoxys Walcott, 1890 is described.

Appraisal of the fossil record ofHomarus(nephropid lobster), with description of a new species from the upper Oligocene of Hungary and remarks on the status ofHoploparia

2017 ◽  
Vol 92 (2) ◽  
pp. 170-182 ◽  
Author(s):  
Dale Tshudy ◽  
Matúš Hyžný ◽  
Alfréd Dulai ◽  
John W.M. Jagt
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Late Cretaceous ◽  
Fossil Record ◽  
Western Europe ◽  
Fossil Species ◽  
Upper Oligocene ◽  
Extant Species ◽  
The Status ◽  
A New Species

AbstractThe fossil record of the clawed lobster genus,Homarus, is appraised. The taxonomic history ofHomarusandHoplopariais summarized, and a list of species recognized for each is provided. A tabulation of all fossil species of the family Nephropidae permits assessment of nephropid species diversity through time. A new species ofHomarus,H.hungaricus, is recorded from the upper Oligocene (Chattian) Mány Formation at Mány, northern Hungary. The species is known by a single specimen consisting of a partial cephalothorax, a pleon minus telson, and partial chelipeds.Homarusis now known by two extant species (H.americanusandH.gammarus) and six fossil taxa, one of Early Cretaceous (Albian;H.benedeni) and five of Cenozoic age (H.hungaricusn. sp.,H.klebsi,H.lehmanni,H.morrisi, andH.percyi). The new fossilHomarusdiffers from modern congeners in aspects of carapace and pleon ornamentation and, especially, cutter claw shape. This is the fourth Oligocene occurrence of a nephropid species; all areHomarusand all are from Western Europe.Homarusmakes its appearance in the fossil record in the Early Cretaceous (Albian) and then is not known again until the Paleogene, despite the fact that nephropid lobsters in general are well known from the Late Cretaceous. Nephropid lobsters are better known from the Cretaceous than from the Cenozoic. Both raw species numbers and numbers corrected (normalized) for epicontinental sea coverage show that shelf-dwelling nephropid lobsters were most diverse during the Late Cretaceous.

scholarly journals A new species of Ampulicomorpha Ashmead from Eocene French amber, with a list of fossil and extant Embolemidae (Insecta: Hymenoptera) of the world

2020 ◽  
Vol 191 ◽  
pp. 20
Author(s):  
Cédric Chény ◽  
Elvis Guillam ◽  
André Nel ◽  
Vincent Perrichot
Keyword(s):  
New Species ◽  
Evolutionary History ◽  
Western Europe ◽  
Distribution Map ◽  
Single Female ◽  
Fossil Species ◽  
The World ◽  
Poor Group ◽  
A New Species ◽  
Eocene Amber

Embolemidae is a cosmopolitan but species-poor group of chrysidoid wasps with a scarce fossil record, despite a long evolutionary history since at least the Early Cretaceous. Here, the new species, Ampulicomorpha quesnoyensis sp. nov., is illustrated and described based on a single female found in Early Eocene amber of Oise (France). The new species is compared with the three other known fossil species of the genus, and a key to all fossil species of Ampulicomorpha is provided. This is the third European fossil species of Ampulicomorpha, which suggests that the genus was once well established in Western Europe while it is more widely distributed in the Eastern Palaearctic region today. A list of all fossil and extant Embolemidae of the world, as well as a map of their geographical distribution map, are provided.

Memoirs: On Some Remarkable New Monticellia-Like and Other Cestodes from Sudanese Siluroids

1925 ◽  
Vol s2-69 (276) ◽  
pp. 703-729
Author(s):  
W. N. F. WOODLAND
Keyword(s):  
New Species ◽  
Taenia Solium ◽  
Broad Band ◽  
The Other ◽  
Taenia Saginata ◽  
New Genera ◽  
The Third ◽  
New Family ◽  
Taxonomic Feature ◽  
A New Species

1. Those species of Proteocephalid Cestodes in which the testes are situated in the cortex may be described as of the Monticellia type. Of this type there are three conditions : (a) the Monticellia condition in which the testes, uterus, ovary, and vitellaria are all situated in the cortex; (b) the Rudolphiella condition in which the testes and vitellaria alone are in the cortex, the other organs being entirely or almost entirely in the medulla ; and (c) the Marsypocephalus condition in which the testes alone are in the cortex, all other organs being medullary. Fuhrmann's genus Goezeella is synonymous with Monticellia if we ignore the characters of the scolex as features of generic value. 2. The anatomy of two species of Marsypocephalus is described: Marsypocephalus rectangulus Wedl, 1862, and Marsypocephalus heterobranchus, n.sp., from Nile Siluroid fishes. 3. It is concluded that the cortical situation of the testes and other organs is a taxonomic feature of generic value only (as in Pseudophyllidea in the case of the vitellaria) and La Rue's new family of the Monticellidae, created to include Monticellia-like forms, is not accepted. Monticellia, Rudolphiella, and Marsypocephalus are thus regarded as new genera in the Proteocephalidae. 4. The facts that the ‘Corallobothrium’ type of scolex is found in all of the three genera Monticellia (as amended by me and including ‘Goezeella’ siluri, Fuhrmann), Rudolphiella, and Proteocephalus (as amended by me and including ‘Corallobothrium’ solidum, Fritsch), and that in the Caryophyllaeidae, Bothriocephalidae, and Cyclophyllidea (cf. e.g. Taenia solium and Taenia saginata) minor scolex characters are evidently only features of specific value, compel us to delete such genera as Corallobothrium, Choanoscolex, Acanthotaenia, and my own recent genus Gangesia and to regard them as synonyms of Proteocephalus (La Rue's genus ‘Ophiotaenia’, syn. ‘Crepidobothrium’, not being accepted). Fuhrmann's Goezeella siluri becomes Monticellia siluri, and Fritach's Corallobothrium solidum becomes Proteocephalus solidus. The genera of the Proteocephalidae are thus four in number: Proteocephalus , Monticellia, Rudolphiella , and Marsypocep, halus, and these are formally or informally redefined. The two species of Marsypocephalus are diagnosed. 5. The ‘Taenia malopteruri’ of Fritsch, 1886, is not of the Monticellia type, as suggested by La Rue. Its structure is of the usual Proteocephalid type, save that the scolex possesses a rostellum and a broad band of hooklets and is covered with spinelets. It is renamed Proteocephalus malopteruri. 6. A new species of Clestobothrium--Clestobothrium clarias, from Clarias anguillaris Günth-is described. It is of interest, not only as being the third (second ?) species known of the genus, but because it affords one more illustration of the fact that the characters of the scolex cannot be used for diagnoses of genera. For this reason also, Lönnberg's genus Ptychobothrium (1889) becomes synonymous with Diesing's genus Polyonchobothrium (1884).

Review of Sebadexius Ledoyer, 1984 (Amphipoda, Dexaminidae, Dexamininae) based on new material from The Philippines, with Sebadexius cebuense sp. nov.

Zootaxa ◽  
2018 ◽  
Vol 4500 (4) ◽  
pp. 596
Author(s):  
JEAN JUST
Keyword(s):  
New Species ◽  
New Caledonia ◽  
The Philippines ◽  
New Material ◽  
A New Species

The amphipod genus Sebadexius Ledoyer, 1984 (New Caledonia) is reviewed, based on new material from Cebu in The Philippines. Some characters are re-interpreted, and a new species, Sebadexius cebuense, is described. 

scholarly journals Microglanis carlae, a new species of bumblebee catfish (Siluriformes: Pseudopimelodidae) from the río Paraguay basin in Paraguay

2008 ◽  
Vol 6 (3) ◽  
pp. 425-432 ◽  
Author(s):  
Héctor S. Vera Alcaraz ◽  
Weferson J. da Graça ◽  
Oscar A. Shibatta
Keyword(s):  
New Species ◽  
Species Complex ◽  
Anterior Margin ◽  
Color Pattern ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
A New Species

Microglanis carlae, new species, is described from the río Paraguay basin and distinguished from its congeners by the following combination of characters: paired and anal fins mottled or with thin faint bands, trunk with dark-brown saddles, anterior margin of pectoral spine with serrations retrorse proximally and antrorse distally, tip of pectoral spine as a distinct bony point, continuous portion of lateral line reaching vertical through last dorsal-fin ray, caudal peduncle with irregularly shaped, faint to dark blotch, maxillary barbel surpassing vertical through dorsal-spine origin, and dark bar on posterior flank continuous from base of adipose fin to that of anal fin. The new species is included in the Microglanis parahybae species complex on the basis of color pattern.

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