New findings of the ammonite Rhaeboceras, including a new species, from the Pierre Shale of eastern Montana

1998 ◽  
Vol 72 (3) ◽  
pp. 473-476 ◽  
Author(s):  
Joyce C. Grier ◽  
James W. Grier
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Small Form ◽  
Pierre Shale ◽  
New Findings ◽  
Stratigraphic Ranges ◽  
A New Species ◽  
Stratigraphic Range

A third known specimen of the ammonite Rhaeboceras burkholderi Cobban, 1987, has been discovered in the upper part of the Pierre Shale of early Maastrichtian age (Late Cretaceous) Baculites eliasi zone of Dawson County, Montana. This finding extends both the geographical and stratigraphic ranges of the species. In addition, R. cedarense new species is described from the Baculites baculus/grandis zone of the same region, which extends the stratigraphic range of the genus as currently recognized. The new species is a small form of Rhaeboceras that appears to be closely related to and probably descended from R. burkholderi.

The first record of the mosasaur Hainosaurus (Reptilia: Lacertilia) from North America

1988 ◽  
Vol 25 (10) ◽  
pp. 1564-1570 ◽  
Author(s):  
Elizabeth L. Nicholls
Keyword(s):  
New Species ◽  
North America ◽  
Late Cretaceous ◽  
First Record ◽  
Range Extension ◽  
Pierre Shale ◽  
A New Species ◽  
Stratigraphic Range

Hainosaurus pembinensis, a new species of tylosaurine mosasaur, is described from the Pembina Member of the Pierre Shale (Campanian, Late Cretaceous) of Manitoba. Hainosaurus differs from Tylosaurus in having a larger number of vertebrae anterior to the chevron-bearing caudals, a greater length of the femur relative to the humerus, and a greater length of the external nares. Hainosaurus pembinensis is distinguished from other species of this genus by its long supratemporal fenestra and homodont dentition. This is the first record of Hainosaurus from North America and represents both a geographic and stratigraphic range extension for the genus.

Eudaemonema webbi sp. nov. (Mammalia, Mixodectidae) from the late Paleocene of western Canada: the youngest known mixodectid

2010 ◽  
Vol 47 (12) ◽  
pp. 1451-1462 ◽  
Author(s):  
Craig S. Scott
Keyword(s):  
New Species ◽  
North American ◽  
Western Canada ◽  
South Central ◽  
Late Paleocene ◽  
Early Paleocene ◽  
Stratigraphic Ranges ◽  
A New Species ◽  
Stratigraphic Range

Mixodectidae (Mammalia, Archonta) are an unusual, poorly known family of dermopteran-like mammals that have been discovered at several North American localities of primarily early Paleocene age. Among the three or four recognized mixodectid genera, Eudaemonema Simpson is perhaps one of the least understood, being known from only a few localities of late Torrejonian and earliest Tiffanian age. This paper reports on a new species of Eudaemonema from the late Paleocene of Alberta, Canada, that significantly extends the geographic and stratigraphic ranges of the genus. Eudaemonema webbi sp. nov. is known from middle and late Tiffanian localities in central and south central Alberta, and it represents the youngest and northernmost species of Eudaemonema so far discovered. E. webbi differs from the genotypic species E. cuspidata in being larger and in having a suite of dental characters (e.g., molariform posterior premolars, enlarged molar protocone and hypocone, development of a second grinding platform on the lower molars) that suggests an increased emphasis on grinding during mastication. E. webbi possesses several dental features (e.g., broad, shelf-like molar paraconid–paracristid, lingually shifted molar hypoconulid) that resemble those of cynocephalids (Mammalia, Dermoptera), with these resemblances interpreted herein as convergent. The occurrence of E. webbi at Gao Mine extends the stratigraphic range of Eudaemonema into the late Tiffanian (Ti5) and represents the youngest known record of Mixodectidae.

A new homolid crab, Zygastrocarcinus tricki sp. nov., from the Pierre Shale (middle Campanian), Baculite Mesa, Pueblo County, Colorado, USA

2016 ◽  
Vol 66 (4) ◽  
pp. 709-713
Author(s):  
Torrey Nyborg ◽  
Malcolm Bedell ◽  
Alessandro Garassino ◽  
Neal L. Larson ◽  
Gale A. Bishop
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Geographical Range ◽  
Pierre Shale ◽  
Geological Age ◽  
Shale Formation ◽  
A New Species

Abstract A new species of homolid crab, Zygastrocarcinus tricki sp. nov., is reported from the Late Cretaceous (middle Campanian, Baculites scotti Zone) of the Pierre Shale Formation (Baculite Mesa, Pueblo County, Colorado). This nearly complete homolid, hereto described is the sixth species assigned to the genus and extends our knowledge along with the geographical range and geological age of this taxon.

The distribution of the genus Dalembia E. Lebedev et Herman (Magnoliophyta) in Late Cretaceous floras of Northern Pacifica

Palaeobotany ◽  
2016 ◽  
Vol 7 ◽  
pp. 66-79 ◽  
Author(s):  
D. A. Yudova ◽  
L. B. Golovneva ◽  
P. I. Alekseev
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Western Siberia ◽  
Geographical Area ◽  
Northern China ◽  
Northeastern Russia ◽  
Pacific Region ◽  
Eastern Siberia ◽  
New Findings ◽  
Stratigraphic Range

New findings of the genus Dalembia from Late Cretaceous sediments are described: Dalembia sp. from lower part of the Sym Formation (Coniacian – Santonian) of Eastern Siberia; Dalembia sp. from upper part of the Timmerdyakch Formation (Turonian – Coniacian) of Western Siberia; D. vachrameevii E. Lebedev et Herman and the new species D. argentea Yudova et Golovneva from the Chingandzha Formation (Turonian – Coniacian) of Okchotsk-Chukotka volcanogenic belt (Northeastern Russia). The stratigraphic range of the genus Dalembia stretch from the late Albian to Campanian. The geographical area includes the territories of Alaska, northern China, Northeastern Russia, Western and Eastern Siberia. The highest quantity of occurrences associated with Nothern Pacific region.

A new species of late Cretaceous crab (Brachyura: Carcineretidae) from Albion Island, Belize

1997 ◽  
Vol 71 (4) ◽  
pp. 615-620 ◽  
Author(s):  
Francisco J. Vega ◽  
Rodney M. Feldmann ◽  
Adriana C. Ocampo ◽  
Kevin O. Pope
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Upper Cretaceous ◽  
The Other ◽  
Congeneric Species ◽  
Lower Maastrichtian ◽  
Chicxulub Impact ◽  
A New Species ◽  
Stratigraphic Range ◽  
Barton Creek

A new species of carcineretid crab, Carcineretesplanetarius, is described from the Upper Cretaceous (lower Maastrichtian) Barton Creek Dolomite at Albion Island, Belize. The age is based on the stratigraphic range of associated nerineid gastropods and correlation with nannoplankton, benthic foraminifera, and the other known congeneric species of crab found in Jamaica. Confirmation of this age aids in constraining the timing of ejecta deposits of the Chicxulub impact found at the top of Barton Creek Dolomite exposed on Albion Island. Paleoenvironmental and paleoecological analyses suggest that these crabs were swimmers in lagoonal settings, capable of burrowing a few centimeters into the mud for protection.

New Findings on Scrophularia sect. Mimulopsis (Scrophulariaceae) from Iran

2019 ◽  
Vol 27 (4) ◽  
pp. 238-247
Author(s):  
Massoud Ranjbar ◽  
Narges Rahchamani
Keyword(s):  
New Species ◽  
Pollen Morphology ◽  
Conservation Status ◽  
Morphological Characters ◽  
Northern Iran ◽  
Distribution Maps ◽  
New Findings ◽  
Tehran Province ◽  
Micromorphological Characters ◽  
A New Species

Scrophularia dianatnejadii Ranjbar & Rahchamani, a new species from Tehran Province in northern Iran, is described and illustrated. It is closely related to S. amplexicaulis Benth. and shares with it some diagnostic morphological characters such as habit, plant indument, phyllotaxy, and corolla shape and color. Both species are placed in Scrophularia L. sect. Mimulopsis Boiss. Macro- and micromorphological characters of the two are examined and compared. Pollen morphology of these species is investigated using SEM. Detailed descriptions, illustrations, distribution maps, and conservation status of both species are provided.

New species and records of the genus Syllis Savigny in Lamarck, 1818 (Annelida: Syllidae) from Socotra Archipelago (Indian Ocean)

Zootaxa ◽  
2020 ◽  
Vol 4742 (1) ◽  
pp. 73-88
Author(s):  
YOLANDA LUCAS RODRÍGUEZ ◽  
GUILLERMO SAN MARTÍN ◽  
DIETER FIEGE
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Valid Species ◽  
New Findings ◽  
The Indian Ocean ◽  
Socotra Archipelago ◽  
San Martín ◽  
A New Species

Based on a census of the polychaete fauna of the Socotra Archipelago in the Indian Ocean we report here new findings on the genus Syllis Savigny in Lamarck, 1818. These ten species are newly recorded from this area: Syllis alternata Moore, 1908; Syllis bouvieri Gravier, 1900; Syllis broomensis (Hartmann-Schröder, 1979); Syllis compacta Gravier, 1900; Syllis crassicirrata (Treadwell, 1925); Syllis gerlachi (Hartmann-Schröder, 1960); Syllis hyalina Grube, 1863; Syllis lutea (Hartmann-Schröder, 1960); Syllis schulzi (Hartmann-Schröder, 1960); Syllis ypsiloides Aguado, San Martín & Ten Hove, 2008. Additionally, Syllis qamhiyn sp. nov. is described as a new species, characterized by its conspicuously thick and short dorsal cirri filled with a gelatinous substance and reduced number of compound chaetae from medium to posterior parapodia, with enlarged shafts and short blades which become almost unidentate and do not fuse with shafts. Following an examination of the holotype of S. bouvieri, its status as a valid species and not as synonym of Syllis prolifera Krohn, 1852, as considered by some authors (see Licher 1999) is confirmed, and a redescription is included. 

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.

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