An upper Miocene hexactinellid sponge from the Puente Shale, Orange County, California

1996 ◽  
Vol 70 (6) ◽  
pp. 908-913 ◽  
Author(s):  
J. Keith Rigby ◽  
Yvonne Albi
Keyword(s):  
New Species ◽  
North America ◽  
Orange County ◽  
Single Layer ◽  
Local Area ◽  
Upper Miocene ◽  
Hexactinellid Sponge ◽  
Older Alluvium ◽  
Hexactinellid Sponges

Well-preserved, laterally flattened, farreid hexactinellid sponges of the new species Farrea rugosa have been recently discovered in the upper Miocene Puente Shale in the Peralta Hills in southeastern Anaheim, Orange County, California. This is the first farreid sponge reported from the Miocene of California and is one of the few Miocene sponges reported from North America. The cluster is of upward bifurcating, moderately complex sponges in which branches are regularly rugose and skeletons are each a single layer of dictyid net, with aborted proximal and distal rays in the otherwise laterally fused quadruled skeleton of original silica. The sponges occur in pinkish brown sandy siltstone in the limited exposure beneath older alluvium that blankets much of the local area.

Silurian hexactinellid sponges from northern British Columbia, Canada

1998 ◽  
Vol 72 (2) ◽  
pp. 202-220 ◽  
Author(s):  
J. Keith Rigby ◽  
Joanne L. Nelson ◽  
B. S. Norford
Keyword(s):  
British Columbia ◽  
New Species ◽  
Black Shale ◽  
Continental Margin ◽  
Early Paleozoic ◽  
Hexactinellid Sponge ◽  
Hexactinellid Sponges

Faunules of largely hexactinellid sponges have been collected from siltstones of Early Silurian Wenlock or latest Landovery age within the upper Road River Group from northern British Columbia. The assemblages include the new species: Protospongia columbiana, Hexatractiella pseudonevadensis and Cyathophycus akiensis. Other taxa described include the hexactinellids Protospongia conica Rigby and Harris, 1979, Hexatractiella nevadensis (Rigby and Stuart, 1988), Diagoniella sp., Gabelia pedunculus? Rigby and Murphy, 1983, and a specimen of the monaxonid demosponge Wareiella typicala Rigby and Harris, 1979. Also included is a fragment of what must have been a steeply obconical-cylindrical hexactinellid sponge of uncertain taxonomy; it has a skeleton of robust hexactines in an unquadruled net, above a root-tuft of 10-20 spicules. Other sponge impressions include small circular clusters of hexactines with radiating, to basketlike patterns and somewhat similar, isolated and dissociated, long probably roof tuft spicules and possible basal root tuft rosettes of monaxons. The faunules are similar to other outer continental margin, black shale, sponge assemblages of the Early Paleozoic Era, and include elements previously described from northern British Columbia and central Nevada.

The new genusTalacastospongia: insights on the first record of a Devonian sponge from South America

2015 ◽  
Vol 89 (6) ◽  
pp. 912-919 ◽  
Author(s):  
Marcelo G. Carrera ◽  
Juan José Rustán
Keyword(s):  
New Species ◽  
South America ◽  
Lower Devonian ◽  
New Genus ◽  
First Record ◽  
Hexactinellid Sponge ◽  
The Family ◽  
New Finding ◽  
Argentine Precordillera ◽  
Hexactinellid Sponges

AbstractThe Lower Devonian (Lochkovian) hexactinellid spongeTalacastospongia minimanew genus new species is reported from the lower beds of the Talacasto Formation in the Argentine Precordillera. It represents the first Devonian sponge from South America and the best record in the paleobiogeographic context of the Malvinokaffric Realm, otherwise virtually devoid of spiculate sponges. This discovery provides some tentative insights on the age and oldest record of the Family Pileolitidae. The paleogeographical context for this new finding shows a high latitude setting with a notable scarcity of hexactinellid sponges recorded to date in Devonian Malvinokaffric basins, and the absence of calcareous spiculate sponges (heteractinids) and hypercalcified sponges (stromatoporoids, sphinctozoans).

Demosponges and hexactinellid sponges from the Lower Devonian Ross Formation of west-central Tennessee

1995 ◽  
Vol 69 (2) ◽  
pp. 211-232 ◽  
Author(s):  
J. Keith Rigby ◽  
Craig R. Clement
Keyword(s):  
New Species ◽  
North America ◽  
Marine Environment ◽  
Lower Devonian ◽  
Normal Wave ◽  
Lower Carboniferous ◽  
West Central ◽  
The Family ◽  
Benton County ◽  
Hexactinellid Sponges

A fauna of eight taxa of demosponges and hexactinellid sponges has been collected from the Lower Devonian (Lochkovian) Ross Formation, largely out of the upper Birdsong Shale Member in Benton, Decatur, and Perry Counties in west-central Tennessee. The Upper Birdsong Shale (“bryozoan zone”) in which the sponges are most common appears to have been deposited below normal wave base in a quiet marine environment, and represents a terrigenous clastic sediment influx onto a carbonate shelf that had existed in the area from at least the middle Silurian. Benton Quarry in Benton County was the most productive locality for fossil sponges.The new demosponge genera and species Ginkgospongia foliata and Coniculospongia radiata occur with the new species Haplistion lobatum and skeletal mats of fine spicules, along with moderately rare specimens of Hindia sphaeroidalis Duncan. The new hexactinellid genus and species Stiodermiella amanita and Stiodermiella tetragona are characterized by peculiar ornamented papillose, swollen spicules that produce a massive, armored layer on the upper part of the sponge. The latter are associated with the new hexactinellid species Twenhofelella bulbulus, which has relatively normal-appearing hexactines, and with an indeterminate hexactinellid genus, which has spinose hexactines in irregular orientation in a small, platelike fragment. Root tufts of probable hexactine origin also occur.Swollen spicules in Stiodermiella are reminiscent of swollen spicules in the family Stiodermatidae Finks, largely from the Permian of western Texas, but elements of the family are also known from Lower Carboniferous to Permian rocks in Europe and North America.

Revision of the Balanid Barnacle Genus Concavus Newman, 1982, with the Description of a New Subfamily, Two New Genera, and Eight New Species

1992 ◽  
Vol 66 (S27) ◽  
pp. 1-46 ◽  
Author(s):  
Victor A. Zullo
Keyword(s):  
New Species ◽  
North America ◽  
Type Species ◽  
Middle Miocene ◽  
Species Group ◽  
New Genera ◽  
Central California ◽  
Upper Miocene ◽  
Extant Species ◽  
Southern Florida

The new balanid subfamily Concavinae is based on the genus Concavus Newman, 1982, and includes five genera and 29 species-group taxa. The subgenera Concavus, Tamiosoma Conrad, 1856 (senior synonym of Menesiniella Newman, 1982), and Arossia Newman, 1982, are raised to generic rank. Two new genera, Chesaconcavus (type species Balanus concavus chesapeakensis Pilsbry, 1916) and Paraconcavus (type species Balanus concavus pacificus Pilsbry, 1916), are proposed, based on fossil and extant species from North America. New species include Tamiosoma advena from the Pliocene of southern Florida, Chesaconcavus rossi and C. santamaria from the middle Miocene of Maryland, C. myosulcatus from the upper Miocene of Virginia, Arossia newmani from the middle Miocene of Maryland, A. rubra from the upper Miocene of central California, A. aurae from the lower Pliocene of North Carolina, and Paraconcavus margaritanus from the upper Miocene of southern California. Concavines, a predominantly Northern Hemisphere group, appear in the late Oligocene in North America and Europe, diversify and spread rapidly in the Neogene, and, with the exception of a few eastern Pacific relicts, become extinct before the late Pleistocene.

An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia)

2021 ◽  
Vol 95 (S83) ◽  
pp. 1-41
Author(s):  
John S. Peel
Keyword(s):  
New York ◽  
New Species ◽  
North America ◽  
World Wide ◽  
Wide Distribution ◽  
East Greenland ◽  
North East ◽  
Small Shelly Fossils ◽  
Stage 4 ◽  
North Greenland

AbstractAn assemblage of 50 species of small shelly fossils is described from Cambrian Series 2 (Stage 4) strata in North Greenland, the present day northernmost part of the paleocontinent of Laurentia. The fossils are derived from the basal member of the Aftenstjernesø Formation at Navarana Fjord, northern Lauge Koch Land, a condensed unit that accumulated in a sediment-starved outer ramp setting in the transarctic Franklinian Basin, on the Innuitian margin of Laurentia. Most other small shelly fossil assemblages of similar age and composition from North America are described from the Iapetan margin of Laurentia, from North-East Greenland south to Pennsylvania. Trilobites are uncommon, but include Serrodiscus. The Australian bradoriid Spinospitella is represented by a complete shield. Obolella crassa is the only common brachiopod. Hyoliths, including Cassitella, Conotheca, Neogloborilus, and Triplicatella, are abundant and diverse, but most are represented just by opercula. Sclerites interpreted as stem-group aculiferans (sachitids) are conspicuous, including Qaleruaqia, the oldest described paleoloricate, Ocruranus?, Inughuitoconus n. gen., and Hippopharangites. Helcionelloid mollusks are diverse, but not common; they are associated with numerous specimens of the bivalve Pojetaia runnegari. The fauna compares best with that of the upper Bastion Formation of North-East Greenland, the Forteau Formation of western Newfoundland, and the Browns Pond Formation of New York, but several taxa have a world-wide distribution. Many specimens are encrusted with crystals of authigenic albite. New species: Anabarella? navaranae, Stenotheca? higginsi, Figurina? polaris, Hippopharangites groenlandicus, Inughuitoconus borealis, and Ocruranus? kangerluk.UUID: http://zoobank.org/160a17b1-3166-4fcf-9849-a3cabd1e04a3

Neritoptyx hogansoninew species (Gastropoda, Mollusca) from the Upper Cretaceous Fox Hills Formation on the Dakota Isthmus, western United States

2018 ◽  
Vol 93 (2) ◽  
pp. 278-290
Author(s):  
J. Mark Erickson
Keyword(s):  
Heat Transfer ◽  
United States ◽  
New Species ◽  
North America ◽  
Upper Cretaceous ◽  
Gulf Coast ◽  
Western United States ◽  
Western Interior Seaway ◽  
Decapod Crustaceans ◽  
Upper Maastrichtian

AbstractIn midcontinent North America, the Fox Hills Formation (Upper Cretaceous, upper Maastrichtian) preserves the last marine faunas in the central Western Interior Seaway (WIS).Neritoptyx hogansoninew species, a small littoral snail, exhibited allometric change from smooth to corded ornament and rounded to shouldered shape during growth. Specimens preserve a zig-zag pigment pattern that changes to an axial pattern during growth.Neritoptyx hogansoninew species was preyed on by decapod crustaceans, and spent shells were occupied by pagurid crabs. Dead mollusk shells, particularly those ofCrassostrea subtrigonalis(Evans and Shumard, 1857), provided a hard substrate to which they adhered on the Fox Hills tidal flats. This new neritimorph gastropod establishes a paleogeographic and chronostratigraphic proxy for intertidal conditions on the Dakota Isthmus during the late Maastrichtian. Presence of a neritid extends the marine tropical/temperate boundary in the WIS northward to ~44° late Maastrichtian paleolatitude. Late Maastrichtian closure of the isthmus subsequently altered marine heat transfer by interrupting northward flow of tropical currents from the Gulf Coast by as much as 1 to 1.5 million years before the Cretaceous ended.UUID:http://zoobank.org/3ba56c07-fcca-4925-a2f0-df663fc3a06b

Widespread infection of the Eastern red-spotted newt (Notophthalmus viridescens) by a new species of Amphibiocystidium, a genus of fungus-like mesomycetozoan parasites not previously reported in North America

Parasitology ◽  
2007 ◽  
Vol 135 (2) ◽  
pp. 203-215 ◽  
Author(s):  
T. R. RAFFEL ◽  
T. BOMMARITO ◽  
D. S. BARRY ◽  
S. M. WITIAK ◽  
L. A. SHACKELTON
Keyword(s):  
New Species ◽  
North America ◽  
Infectious Diseases ◽  
Emerging Infectious Diseases ◽  
Seasonal Distribution ◽  
Notophthalmus Viridescens ◽  
Amphibian Species ◽  
Mortality And Morbidity ◽  
Causative Agents ◽  
A New Species

SUMMARYGiven the worldwide decline of amphibian populations due to emerging infectious diseases, it is imperative that we identify and address the causative agents. Many of the pathogens recently implicated in amphibian mortality and morbidity have been fungal or members of a poorly understood group of fungus-like protists, the mesomycetozoans. One mesomycetozoan, Amphibiocystidium ranae, is known to infect several European amphibian species and was associated with a recent decline of frogs in Italy. Here we present the first report of an Amphibiocystidium sp. in a North American amphibian, the Eastern red-spotted newt (Notophthalmus viridescens), and characterize it as the new species A. viridescens in the order Dermocystida based on morphological, geographical and phylogenetic evidence. We also describe the widespread and seasonal distribution of this parasite in red-spotted newt populations and provide evidence of mortality due to infection.

ANNOTATED LIST OFUROLEUCON(UROLEUCON,UROMELAN,SATULA) (HOMOPTERA:APHIDIDAE) OF AMERICA NORTH OF MEXICO, WITH KEYS AND DESCRIPTIONS OF NEW SPECIES

1985 ◽  
Vol 117 (8) ◽  
pp. 1029-1054 ◽  
Author(s):  
A.G. Robinson
Keyword(s):  
New Species ◽  
North America ◽  
Annotated List ◽  
Nomen Dubium

AbstractA key is given for 4 subgenera in the aphid genusUroleuconMordvilko in America north of Mexico. An annotated list and keys are presented for 44 species of the subgenusUroleucon, 12 species of the subgenusUromelanMordvilko, and 1 species of the subgenusSatulaOlive. Nine new species are described in the subgenusUroleucon:Uroleucon (Uroleucon) alaskensen. sp.,U.(U.) arnesensen. sp.,U.(U.)borealen. sp.,U.(U.)chanin. sp.,U.(U.)deltensen. sp.,U.(U.)elephantopicolan. sp.,U.(U.)ivaen. sp.,U.(U.)maximilianicolan. sp., andU.(U.)vancouverensen. sp. Two subspecies,U. (Uromelan)illinisubspeciescrudaeandsangamonense, are listed here merely as color forms ofillini(Hottes and Frison), not subspecies.Uroleucon(Uroleucon)muralisBuckton,U. (Uromelan)compositae(Theobald), andU.(U.)solidaginis(Fabricius) have been listed as present in North America, but there appear to be no authentic records of their occurrence.Uroleucon(Uroleucon)pseudochrysanthemi(Olive) is declared to be a synonym ofU.(U.)lanceolatumPatch, andU. (Uromelan)squarrosum(Sanborn) as anomen dubium.

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