Notes on selected Cretaceous echinoids from south-central Sakhalin, Far East Russia

2013 ◽  
Vol 92 (2-3) ◽  
pp. 123-132
Author(s):  
J.W.M. Jagt ◽  
E.A. Jagt-Yazykova ◽  
T.D. Zonova
Keyword(s):  
Late Cretaceous ◽  
Far East ◽  
The Other ◽  
Apical Disc ◽  
South Central ◽  
East Russia ◽  
Primary Spine ◽  
Lower Campanian ◽  
Northern Japan

AbstractFrom Albian, Santonian and Campanian strata in south-central Sakhalin, four echinoid taxa are described, illustrated and discussed. In Far East Russia, echinoids are rare constituents amongst mid- and Late Cretaceous macrofaunal assemblages in which inoceramid and non-inoceramid bivalves, plus heteromorph and non-heteromorph ammonites predominate. The sole regular species in the present lot is represented by an incomplete external mould of a primary spine of a rhabdocidarid, Polycidaris(?) sp., from the lower Campanian. Irregular taxa include a fragmentary, specifically indeterminate ‘pygurid’, Echinopygus(?) sp., of late Albian age, as well as two spatangoids. One of these, a toxasterid of late Campanian age, is assigned to Niponaster cf. hokkaidensis (Lambert in Lambert & Thiéry, 1924). The other is a new hemiasterid with a semi-ethmophract apical disc, a peripetalous fasciole with diffuse boundaries (parafasciole) and posterior petals that are near-equal in length to anterior ones, from lowermost Campanian strata. For this, the name Palhemiaster natalyae n. sp. is introduced. Comparisons with coeval echinoid faunas from nearby Hokkaido (northern Japan) are hampered by the generally poor preservation of the latter. However, with the exception of Niponaster cf. hokkaidensis, none of the forms recorded in the present paper appears to be represented in those Japanese assemblages.

scholarly journals Crinoid diversity in the Upper Cretaceous Yezo Supergroup, Hokkaido, northern Japan*

Zoosymposia ◽  
2012 ◽  
Vol 7 (1) ◽  
pp. 71-80
Author(s):  
AARON W. HUNTER
Keyword(s):  
Late Cretaceous ◽  
Deep Water ◽  
Upper Cretaceous ◽  
Outer Shelf ◽  
South Central ◽  
Sandstone Facies ◽  
Sandy Mudstone ◽  
Water Facies ◽  
Northern Japan ◽  
Mudstone Facies

New data, principally from ‘local’ encrinites in the Yezo Supergroup of Hokkaido, northern Japan, suggest that many relict ‘Jurassic-type faunas’ identified in Europe and central Japan might have persisted in the Late Cretaceous deep-water (> 100 m) muddy sandstone facies found throughout the island of Hokkaido. For example, Isocrinus and Balanocrinus occur in the outer shelf sandy mudstone facies of the Turonian-Coniacian Saku Formation and the Coniacian- Campanian Haborogawa Formation, of the Mikasa area (central Hokkaido), respectively. Isocrinus is also found in the Turonian-Coniacian deep-water siltstones and sandy siltstones of the Nishi-chirashinai Formation of the Nakagawa area (northern Hokkaido). In contrast, Isselicrinus, which belongs to ‘Late Cretaceous type-faunas’, occurs in the uppermost Creta­ceous (Campanian) outer shelf mudstone facies of the Upper Yezo Supergroup around Hobetsu (south-central Hokkaido). Although collections of crinoids from the chalks of northern Europe are themselves largely free from sampling biases, Cretaceous crinoid diversity data have been markedly influenced by fossils preserved in the relatively homogeneous chalk facies where the faunal differences between the deep-water Danish, English and north German chalks (> 250 m) and the shallow-water facies found around Maastricht, the Netherlands (< 50 m) are slight. The results of this preliminary report on the crinoid faunas of Hokkaido suggest that global crinoid diversity reported from the Upper Cretaceous might be influenced by sampling and facies biases.

scholarly journals Megarthrus of Korea, with description of a new species (Coleoptera: Staphylinidae: Proteininae)

2011 ◽  
Vol 143 (4) ◽  
pp. 317-331 ◽  
Author(s):  
Giulio Cuccodoro ◽  
Myoung Hee Kim ◽  
Kee-Jeong Ahn
Keyword(s):  
New Species ◽  
Far East ◽  
Species Distributions ◽  
The Other ◽  
Taxonomic Study ◽  
East Russia ◽  
First Time ◽  
A New Species

AbstractA taxonomic study of Megarthrus Curtis in Korea is presented. The genus is represented in Korea by 10 species including M. coreanus Kim and Cuccodoro sp. nov.Megarthrus corticalis Sharp, M. fennicus Lahtinen, M. incubifer Cuccodoro, M. japonicus Sharp, M. montanus Sawada, M. sawadai Cuccodoro, and M. zerchei Cuccodoro and Löbl are reported from Korea for the first time. A diagnosis of the genus and a key to the Korean species are provided. The new species is diagnosed, described, and illustrated and the other species are diagnosed and illustrated. Species distributions are presented, and the effect of these Korean findings on the level of endemism of the Megarthrus fauna of Japan and Far East Russia is discussed.

PERMIAN RADIOLARIAN FAUNAS FROM CHERT IN THE KHABAROVSK COMPLEX, FAR EAST RUSSIA, AND THE AGE OF EACH LITHOLOGIC UNIT OF THE KHABAROVSK COMPLEX

2005 ◽  
Vol 79 (4) ◽  
pp. 687-701 ◽  
Author(s):  
NORITOSHI SUZUKI ◽  
SATORU KOJIMA ◽  
HARUMASA KANO ◽  
SATOSHI YAMAKITA ◽  
AKIHIRO MISAKI ◽  
...  
Keyword(s):  
Far East ◽  
East Russia ◽  
Lithologic Unit

Multi-Aged Small Pterosaur Track Assemblage from the Upper Cretaceous of Korea

2021 ◽  
Author(s):  
Jongyun Jung ◽  
Min Huh ◽  
Koo-Geun Hwang ◽  
Hyun-Joo Kim ◽  
Byung-Do Choi ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Korean Peninsula ◽  
Upper Cretaceous ◽  
Global Distribution ◽  
The Other

Abstract The pterosaur is the earliest and largest powered flying vertebrate, even earlier and larger than the other extant archosaurian group, birds. However, evidence for this flying reptile, including the diversity of the small-sized pterosaur after the mid-Cretaceous, and their ecology, has remained elusive. Here we present numerous and dense pterosaur track assemblages from the Hwasun Seoyuri tracksite in the Upper Cretaceous Jangdong Formation of the Neungju Basin in Korea. The pterosaur track assemblage, assigned to Pteraichnus isp., consists of various sized, randomly oriented manus-dominated tracks with several pes claw marks. These features commonly indicate the semi-aquatic behavior and multi-age gregariousness of pterosaurs. The supposed trackmaker of pterosaur tracks would be the small-sized pterodactyloid that inhibited the Late Cretaceous Korean Peninsula, but that has not previously been reported. This ichnological evidence for the global distribution of small-sized pterosaurs could be interpreted to mean that the pterosaur fauna in the Late Cretaceous was more distributed and diverse than was previously known.

Taxonomic Re-Examination of the Late Cretaceous Planktonic Foraminiferal Species Archaeoglobigerina Cretacea (d'Orbigny, 1840) and Constraints on Its Morphologic Variability and Stratigraphic Distribution in One of The Type Localities (Kent, SE England)

2021 ◽  
Vol 51 (1) ◽  
pp. 46-63
Author(s):  
Francesca Falzoni ◽  
Annachiara Bartolini
Keyword(s):  
Late Cretaceous ◽  
Species Concept ◽  
Morphological Features ◽  
Single Individual ◽  
Type Specimens ◽  
Foraminiferal Species ◽  
Morphological Differences ◽  
Lower Campanian ◽  
Original Drawings

ABSTRACT Distinctive and taxonomically relevant morphological differences exist between the original drawings of Archaeoglobigerina cretacea illustrated by d'Orbigny (1840) and the lectotype designated by Banner & Blow (1960), particularly regarding the equatorial periphery, which is rounded in the former and double-keeled in the latter specimen. Such differences would suggest that they are not conspecific, but this hypothesis cannot be easily tested because d'Orbigny's drawings likely represent a synthesis of observations on several specimens rather than a single individual and the slide intended to contain the lectotype is empty. In this study, we have re-examined the A. cretacea type specimens deposited in the d'Orbigny collection at the Muséum National d'Histoire Naturelle in Paris and samples from one of the type localities (Kent, SE England) with the aim to reconstruct d'Orbigny's species concept, clarify its morphological features, and better constrain its stratigraphic distribution. Our study suggests that d'Orbigny's concept for A. cretacea was broad and included unkeeled as well as double-keeled morphotypes. However, assemblages from Kent yield common and large-sized specimens conspecific with the lectotype in the middle Santonian-lower Campanian, while morphotypes resembling the drawings of d'Orbigny are absent. Accordingly, five topotype specimens from the lower Campanian of Kent are herein illustrated in order to stabilize the species concept adopted over the last 60 years on the basis of the lectotype drawing and description. All topotypes possess a wide imperforate peripheral band and a moderately to weakly developed double-keeled periphery. Finally, the description of A. cretacea is emended to exclude specimens that do not possess an imperforate peripheral band and to include those that show curved and weakly beaded spiral sutures.

Bipolaris sacchari. [Distribution map].

2012 ◽  
Author(s):  
Keyword(s):  
Tamil Nadu ◽  
Solomon Islands ◽  
Far East ◽  
Uttar Pradesh ◽  
French Polynesia ◽  
Virgin Islands ◽  
Peninsular Malaysia ◽  
Pennisetum Purpureum ◽  
Distribution Map ◽  
East Russia

Abstract A new distribution map is provided for Bipolaris sacchari (E.J. Butler) Shoemaker. Ascomycota: Pleosporales. Hosts: sugarcane, citronella grass (Cymbopogon citratus) and elephant grass (Pennisetum purpureum). Information is given on the geographical distribution in Europe (Italy; Madeira, Portugal; and Far East, Russia), Asia (Bangladesh; Bhutan; Cambodia; Fujian, Guangdong, Guangxi, Hong Kong, Hunan, Jiangxi, Nei Menggu, Sichuan and Yunnan, China; Andaman and Nicobar Islands, Andhra Pradesh, Assam, Karnataka, Madhya Pradesh, Maharashtra, Rajasthan, Tamil Nadu, Uttar Pradesh and West Bengal, India; Irian Jaya, Indonesia; Iran; Israel; Japan; Peninsular Malaysia, Sabah and Sarawak, Malaysia; Myanmar; Pakistan; Philippines; Sri Lanka; Taiwan; Thailand; and Vietnam), Africa (Cameroon, Congo Democratic Republic, Egypt, Ghana, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Reunion, Senegal, Sierra Leone, South Africa, Tanzania, Uganda, Zambia and Zimbabwe), North America (Mexico, and Alabama, Florida, Georgia, Hawaii, Louisiana and Maryland, USA), Central America and Caribbean (Antigua and Barbuda, Belize, Costa Rica, Cuba, Dominican Republic, El Salvador, Grenada, Guadeloupe, Guatemala, Haiti, Honduras, Jamaica, Martinique, Nicaragua, Panama, Puerto Rico, Saint Kitts and Nevis, Saint Lucia, Trinidad and Tobago, United States Virgin Islands and Windward Islands), South America (Argentina; Bolivia; Acre, Minas Gerais, Pernambuco and Rio Grande do Sul, Brazil; Colombia; French Guiana; Guyana; Peru; Suriname; and Venezuela) and Oceania (New South Wales and Queensland, Australia; Cook Islands; Federated States of Micronesia; Fiji; French Polynesia; New Zealand; Palau; Papua New Guinea; Samoa; Solomon Islands; and Vanuatu).

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