Redescriptions of some Lower Devonian gastropods from Tennessee currently considered to be platyceratids

2016 ◽  
Vol 90 (2) ◽  
pp. 195-210 ◽  
Author(s):  
John A. Harper
Keyword(s):  
Lower Devonian ◽  
Systematic Position ◽  
Type Specimens ◽  
Lower Carboniferous ◽  
New Family ◽  
Juvenile Specimen

AbstractThree genera of gastropods described from the Lower Devonian Rockhouse Formation of Hardin County, Tennessee, currently are considered to be junior subjective synonyms ofPlatyceras(Visitator) Perner, 1911. Evaluation of the type specimens of these genera as well as types of two other gastropods from the same formation reveals the following:Platyostoma quadrangulare(Dunbar, 1920) is the only platyceratid gastropod among them;Saffordella tennessensisDunbar, 1920 has a selenizone above midwhorl so it is an eotomarioidean belonging to the Gosseletinidae;Aulopea nelsoniDunbar, 1920 and the lectotype ofDistemnostoma princepsDunbar, 1920 each has a broad subsutural sinus on the upper whorl surface similar to the Omphalotrochidae, as well as a basal sinus similar to certain primitive caenogastropods, so their systematic position is uncertain; I considerHolopea planidorsataDunbar, 1920 to be a juvenile specimen ofD. princeps; the fragmentary paralectotype ofD. princepspossibly represents a gerontic form ofDistemnostoma curtumDunbar, 1920, which possesses a well-developed selenizone on an upwardly projecting shoulder at the edge of the upper whorl surface. BecauseD. curtumappears to be unrelated toD. princeps, the genotype ofDistemnostoma, I propose the new generic nameOmocordellaforD. curtum. The new family Micromphalidae is erected to include OrdovicianSlehoferiaRohr and Fryda, 2001, lower CarboniferousMicromphalusKnight, 1945, andOmocordellan. gen.

Type Specimens of Palaeozoic Corals from New South Wales in W. B. Clarke's First Collection, and in the Strzelecki Collection

1937 ◽  
Vol 74 (4) ◽  
pp. 145-153 ◽  
Author(s):  
Dorothy Hill
Keyword(s):  
Natural History ◽  
Lower Devonian ◽  
New South ◽  
New South Wales ◽  
British Museum ◽  
Type Specimens ◽  
Lower Carboniferous ◽  
South Wales

In this paper is given a revision of all but one of the corals in the Rev. W. B. Clarke's first collection of fossils from New South Wales; the collection was placed by him in the Woodwardian Museum at Cambridge in 1844, and was described by M'Coy (1847). The types are still preserved at the Sedgwick Museum, Cambridge. A description is also given of the holotype of Amplexus arundinaceus Lonsdale, which was collected from New South Wales by Strzelecki in 1842, and is now in the British Museum (Natural History), London. The species are distributed as follows: 1? Permian, 1 Lower Carboniferous, 1 Devonian, and 1 Silurian or Lower Devonian.

Early Paleozoic Hyolitha from North America: reexamination of Walcott's and Resser's type specimens

1988 ◽  
Vol 62 (2) ◽  
pp. 218-233 ◽  
Author(s):  
John Mark Malinky
Keyword(s):  
North America ◽  
Lower Cambrian ◽  
Type Species ◽  
New Genus ◽  
Early Paleozoic ◽  
Type Specimens ◽  
Middle Cambrian ◽  
Upper Cambrian ◽  
New Family ◽  
The Family

Concepts of the family Hyolithidae Nicholson fide Fisher and the genera Hyolithes Eichwald and Orthotheca Novak have been expanded through time to encompass a variety of morphologically dissimilar shells. The Hyolithidae is here considered to include only those hyolithid species which have a rounded (convex) dorsum; slopes on the dorsum are inflated, and the venter may be flat or slightly inflated. Hyolithes encompasses species which possess a low dorsum and a prominent longitudinal sulcus along each edge of the dorsum; the ligula is short and the apertural rim is flared. The emended concept of Orthotheca includes only those species of orthothecid hyoliths which have a subtriangular transverse outline and longitudinal lirae covering the shell on both dorsum and venter.Eighteen species of Hyolithes and one species of Orthotheca from the Appalachian region and Western Interior were reexamined in light of more modern taxonomic concepts and standards of quality for type material. Reexamination of type specimens of H. similis Walcott from the Lower Cambrian of Newfoundland, H. whitei Resser from the Lower Cambrian of Nevada, H. billingsi Walcott from the Lower Cambrian of Nevada, H. gallatinensis Resser from the Upper Cambrian of Wyoming, and H. partitus Resser from the Middle Cambrian of Alabama indicates that none of these species represents Hyolithes. Hyolithes similis is here included under the new genus Similotheca, in the new family Similothecidae. Hyolithes whitei is designated as the type species of the new genus Nevadotheca, to which H. billingsi may also belong. Hyolithes gallatinensis is referred to Burithes Missarzhevsky with question, and H. partitus may represent Joachimilites Marek. The type or types of H. attenuatus Walcott, H. cecrops Walcott, H. comptus Howell, H. cowanensis Resser, H. curticei Resser, H. idahoensis Resser, H. prolixus Resser, H. resseri Howell, H. shaleri Walcott, H. terranovicus Walcott, and H. wanneri Resser and Howell lack shells and/or other taxonomically important features such as a complete aperture, rendering the diagnoses of these species incomplete. Their names should only be used for the type specimens until better preserved topotypes become available for study. Morphology of the types of H.? corrugatus Walcott and “Orthotheca” sola Resser does not support placement in the Hyolitha; the affinities of these species are uncertain.

Planalvus (Brachiopoda, Athyridida) from the Lower Devonian of the Armorican Massif, northwest France

1994 ◽  
Vol 68 (3) ◽  
pp. 451-460 ◽  
Author(s):  
Patrick R. Racheboeuf ◽  
Paul Copper ◽  
Fernando Alvarez
Keyword(s):  
New Species ◽  
North America ◽  
Lower Devonian ◽  
Eastern North America ◽  
Lower Carboniferous ◽  
Armorican Massif ◽  
A New Species

Cryptonella? cailliaudi Barrois, 1889, from the Lower Devonian of the Armorican Massif, is tentatively assigned to the athyridid brachiopod genus Planalvus Carter, thus far known only from the Lower Carboniferous of eastern North America. In addition, a new species, Planalvus rufus, is described from the Bois-Roux Formation (Pragian) of Brittany, France. These French species are small brachiopods with complex spiralial and jugal structures, which permit assignment to the order Athyridida.

Interpretation of Pb isotope compositions of galenas from the Midland Valley of Scotland and adjacent regions

1984 ◽  
Vol 75 (2) ◽  
pp. 85-96 ◽  
Author(s):  
John Parnell ◽  
Ian Swainbank
Keyword(s):  
Lower Devonian ◽  
Lead Isotope ◽  
Sedimentary Rocks ◽  
Isotope Ratios ◽  
Igneous Rocks ◽  
Pb Isotope ◽  
Lower Carboniferous ◽  
Granite Magma ◽  
Lower Palaeozoic ◽  
Caledonian Granite

ABSTRACTThe lead isotope compositions of 61 galenas from central and southern Scotland vary markedly between different regions. Most galenas from the southern Grampian Highlands yield isotope ratios (206Pb/204Pb 17·77 ± 0·25, 207Pb/204Pb 15·47 ± 0·05, 208Pb/204Pb 37·63 ± 0·26) less radiogenic than those from Midland Valley galenas (18·22 ± 0·12, 15·55 ± 0·05, 38·13 ± 0·14) whilst galena lead from the Southern Uplands (18·28 ± 0·12, 15·56 ± 0·03, 38·21 ± 0·18) is more radiogenic than that from the southern Midland Valley (18·12 ± 0·06, 15·52 ± 0·02, 38·06 ±0·10). The change in isotopie composition across the Highland Boundary fault reflects the presence or absence of Dalradian rocks which included a magmatic component of lead. Galenas from the Dalradian sequence in Islay, where igneous rocks are lacking, have a composition (18·14±0·04, 15·51±0·01, 37·90±0·02) more like Midland Valley galenas. In the Southern Uplands, galenas yield lead isotope ratios similar to those of feldspars from Caledonian granite (18·30 ± 0·14, 15·57 ± 0·04, 37·96 ± 0·15) analysed by Blaxland et al. (1979). The similar ratios reflect the incorporation of Lower Palaeozoic sedimentary rocks into the granite magma, rather than a granitic source for the mineralisation. The granites were then thermal-structural foci for later mineralising fluids which leached metals from the surrounding rocks. Within the Midland Valley, galenas hosted in Lower Devonian-Lower Carboniferous lavas are notably more radiogenic (18·31 ±0·12, 15·58 ± 0·06, 38·20 ± 0·16) than sediment-hosted galenas (18·14 ± 0·07, 15·52 ± 0·02, 38·08 ± 0·10). The Devonian lavas at least may have inherited lead from subducted (? Lower Palaeozoic) rock incorporated in the primary magma.

Systematic position of the Afrotropical species described in Trachyphloeini (Coleoptera: Curculionidae: Entiminae)

Zootaxa ◽  
2017 ◽  
Vol 4344 (3) ◽  
pp. 522 ◽  
Author(s):  
ROMAN BOROVEC ◽  
JIŘÍ SKUHROVEC
Keyword(s):  
New Species ◽  
Taxonomic Status ◽  
Systematic Position ◽  
Junior Synonym ◽  
New Genera ◽  
Type Specimens ◽  
A New Species

The Afrotropical species described as Trachyphloeini Lacordaire, 1863 were examined and their taxonomic status is revised. Atrachyphloeus Voss, 1962 is proposed as a junior synonym of Phaylomerinthus Schoenherr, 1842, Cathormiocerus africanus Hoffmann, 1965 as a junior synonym of Tapinomorphus sylvicola Voss, 1962 and Trachyphloeus pustulifer Voss, 1959 as a junior synonym of Platycopes tuberculatus Marshall, 1906. Atrachyphloeus convergens Voss, 1962 is transferred to the genus Phaylomerinthus Schoenherr, 1842, Trachyphloeus hardenbergi Marshall, 1923 and T. notulatus Boheman, 1842 to Glyptosomus Schoenherr, 1847, Trachyphloeus nanus Fåhraeus, 1871 to Pentatrachyphloeus Voss, 1974, Trachyphloeus pustulifer Voss, 1959 to Platycopes Schoenherr, 1823 and Trachyphloeus setiger Fåhraeus, 1871 to Phaylomerinthus Schoenherr, 1842. “Trachyphloeosoma” brevicolle Voss, 1974, “Trachyphloeus” brevis Boheman, 1842, “T”. nodifrons Hoffmann, 1968 and “T”. squalidus Boheman, 1842 are provisionally left in their current genera, but new genera for them will be described in future papers. The genus Phaylomerinthus Schoenherr, 1842 has been redefined and redescribed. Lectotypes for the following species are designated (current names added in brackets where different): Cathormiocerus africanus Hoffmann, 1965 (Tapinomorphus sylvicola Voss, 1962), Trachyphloeus hardenbergi Marshall, 1923 (Glyptosomus hardenbergi (Marshall, 1923)), Trachyphloeus nanus Fåhraeus, 1871 (Pentatrachyphloeus nanus (Fåhraeus, 1871)), Trachyphloeus notulatus Boheman, 1842 (Glyptosomus notulatus (Boheman, 1842)), Trachyphloeus pustulifer Voss, 1959 (Platycopes tuberculatus (Marshall, 1906)), Trachyphloeus setiger Fåhraeus, 1871 (Phaylomerinthus setiger (Fåhraeus, 1871)), “Trachyphloeus” brevis Boheman in Schoenherr, 1842 and “Trachyphloeus” squalidus Boheman in Schoenherr, 1842. Two paralectotypes of Cathormiocerus africanus Hoffmann, 1965 from Tanzania are described as a new species, Tapinomorphus franzi sp. n. All type specimens are illustrated. 

Palaeozoic and Mesozoic hemiptera (Insecta)

1956 ◽  
Vol 4 (2) ◽  
pp. 165 ◽  
Author(s):  
JW Evans
Keyword(s):  
New South ◽  
New South Wales ◽  
Wide Distribution ◽  
Upper Permian ◽  
New Genus And Species ◽  
Type Specimens ◽  
New Family ◽  
South Wales ◽  
The Family

New species of Triassic Homoptera and Heteroptera from the Brookvale series of New South Wales and Mt. Crosby, Queensland, are described, one homopteron from the Upper Permian of Warner's Bay, N.S.W., and Homoptera previously recorded from Palaeozoic and Mesozoic strata in Australia and elsewhere are reviewed. New illustrations, made from type specimens, are given for some Australian species. Representatives of the family Scytinopteridae, previously known only from Permian strata, are recorded from the Triassic. Two forewings of uncertain affinities, but having venational features similar to hylicids, are ascribed to species in genera placed in a new family, the Hylicellidae. For leaf-hoppers which are regarded as transitional between the Palaeozoic and Mesozoic faunas, a new family, the Stenoviciidae, is proposed, and another new family, the Chiliocyclidae, is proposed for a group of Mesozoic leaf-hoppers of wide distribution. A forewing from the Triassic of Queensland is identified as that of a eurymelid and another as a cicadellid. The earliest undoubted cercopid, so far recorded, is described from the Triassic; a new family, the Eoscarterellidae, is defined to comprise insects of probable cercopoid affinities, and the family Dysmorphoptilidae is transferred to the Cercopoidea. As the genus Palaeontina Butler is considered not to be a homopteron, a new family name, the Cicadomorphidae, is proposed for large Homoptera with cicada-like wings, previously recorded only from the Jurassic of Europe and which formerly have been included in the family Palaeontinidae. A new genus and species belonging to the Cicadomorphidae is described from the Triassic of New South Wales. The relationships of a new family, the Cicadoprosbolidae, and of the Mesogereonidae are discussed and both are considered to be allied to the Cicadidae. Two new psylloids are described and also an aphid, the latter being the first representative of the Aphidoidea to be recorded from Triassic strata. No new fulgoroids are described but problems associated with the determination of fulgoroid venation are discussed. The genus Actinoscytim Tillyard is transferred from the Homoptera to the Heteroptera and together with three new genera ascribed to a new family, the Actinoscytinidae. The family Ipsviciidae, formerly regarded as belonging to the Homoptera is also removed to the Heteroptera. The family Dunstaniidae is reviewed in the light of a re-examination of type specimens. Fossil fragments, poorly-preserved specimens, and wings of uncertain position which have at some time been referred to the Homoptera, are listed, and some are discussed. Possible derivations and interrelationships of the various major groups of Homoptera are indicated by means of a chart.

scholarly journals On the systematic position of the genus Timmiella (Dicranidae, Bryopsida) and its allied genera, with the description of a new family Timmiellaceae

Phytotaxa ◽  
2014 ◽  
Vol 181 (3) ◽  
pp. 151 ◽  
Author(s):  
Yuya Inoue ◽  
Hiromi Tsubota
Keyword(s):  
Phylogenetic Analysis ◽  
Morphological Characters ◽  
Systematic Position ◽  
Molecular Phylogenetic Analysis ◽  
New Family ◽  
Leaf Surfaces ◽  
The Family ◽  
Molecular Phylogenetic

Based on our molecular phylogenetic analysis of haplolepideous mosses with concatenated sequences of chloroplast rps4 and rbcL genes, a new family Timmiellaceae is erected to accommodate the genera Timmiella and Luisierella, both of which have been formerly included in the family Pottiaceae.  The family Timmiellaceae is resolved as a second-branching clade together with Distichium (Distichiaceae) within the Dicranidae (haplolepideous moss) lineages and phylogenetically distinct from the Pottiaceae.  Reassessment of morphological characters suggests that a combination of the characters: 1) adaxially bulging and abaxially flat leaf surfaces, 2) sinistrorse or straight peristomes, when present, and 3) sinistrorsely arranged operculum cells is unique to Timmiellaceae and discriminates it from other haplolepideous moss families.

Proposed change in status of the Nearctic genus Charadrodromia Melander (Diptera: Hybotidae, Tachydromiinae), with description of four new species

Zootaxa ◽  
2012 ◽  
Vol 3525 (1) ◽  
pp. 35 ◽  
Author(s):  
IGOR SHAMSHEV ◽  
PATRICK GROOTAERT
Keyword(s):  
New Species ◽  
Systematic Position ◽  
Junior Synonym ◽  
Type Specimens ◽  
First Time

The genus Charadrodromia Melander is reviewed and considered here as a junior synonym of Platypalpus Macquart. All three species originally included in the former group are re-described (P. arnaudi (Melander, 1960) comb. nov., P. microphona (Melander, 1928) comb. nov., P. syletor (Melander, 1928) comb. nov.); the photos of the habitus for each species based on the type specimens are provided; the male of P. syletor is described for the first time; and the lectotype of P. microphona is designated. Also, among unidentified materials assigned to the former Charadrodromia four new species are revealed: P. cummingi Shamshev & Grootaert sp. nov. (USA, California), P. layiaphilus Shamshev & Grootaert sp. nov. (USA, California), P. submicrophona Shamshev & Grootaert sp. nov. (USA, California), P. tanbarkiensis Shamshev & Grootaert sp. nov. (USA, California). The lectotype of the related P. canus Melander, 1902 is designated, the species is re-described, and figures of male terminalia are provided for the first time. The systematic position of species assigned to the former Charadrodromia is discussed and they are provisionally assigned to the P. hackmani group previously known from the Palaearctic. A key to the eight included species is provided.

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