Planolites. Planolites, although strictly a junior synonym of Palae...

Second lateral glabellar lobe lacks buttress extending into axial fur

Aug 15, 2021 · Miniaturized Planolites was found in the microbialite of the upper Cambrian Series 2. • Planolites formed near the sediment–water interface in the early diagenetic period. • Only small trace-makers survived in an anoxic environment after transgression. • Small trace-makers and Girvanella were the pioneers of ecosystem recovery. • Planolites isp . is teeming within the oolitic limestone units in the Changhsia Formation of Cambrian Series 3 in western Henan, and its morphology is characterized by a horizontal or low-angle ...Abstract. Trace fossil communities are mainly bathymetry-controlled. Their relative depth sequence has been established in sedimentary series of up to Cambrian age. Actual depth figures can now be added from counterparts in the present oceans. As exemplified by the spreite burrows, behavioural response to a bathymetric gradient in food suply is ...Download scientific diagram | -A) Flattened and stretched elliptical sections of Planolites (P), and Palaeophycus (M) composed of light-colored infill surrounded by a thin layer of black material ...Description: The studied Planolites consist of simple burrows, displaying a cylindrical to sub-cylindrical shape without branching, they are always horizontal, straight, and filled with black micritic material, with a diameter not exceeding 1 mm. Planolites isp. co-occurs with Zoophycos brianteus in the upper subunit of the marlstone ...Planolites represents active backfilling of sediment in an ephemeral burrow constructed by a mobile deposit feeder and Palaeophycus represents passive sedimentation within an open dwelling burrow constructed by a predaceous or suspension-feeding animal.3f,g), intergrading with rare spiral vertical burrows (Gyrolithes isp.), cross-cutting shallow-tier Planolites isp., and rare bivalve trace fossils 54 attributed to Lockeia siliquaria and ...(a). Arenocolites isp (b) Asterosoma ludwigae (c) Cochlichnus anguineus (d) Ophiomorpha annulata (e) Ophimorpha nodosa (f) Ophiomorpha rudis (g&h) Palaeodictyon stroziicross-cutting Planolites, The interpreted relative oxygenation curve for this section (Fig, 1) is based on general sedimentary fabric, trace fossil assemblage composition and burrow size (asThe facies of this element comprises laminated mudstone (Fl) with thin, rippled sandstone interbeds, up to 0.05 m thick (Tr and Sr, Fig. 7). it is characterized by common ichnofacies, such as Teichichnus, Planolites, as well as common syneresis cracks. Common dispersed and coalesced anhydrite nodules are encountered.Abstract The Albian-Cenomanian reservoirs of the Ivorian sedimentary basin consist mainly of conglomeratic, pebbly, and very fine to coarse-grained sandstones. In the present study, the lithologic composition, flow and storage capacities, and reservoir quality parameters were studied in detail. Some fresh, clean and non-fractured samples were …C-E) Ichnofossils common in these deposits, illustrating in C Planolites (Pl), Paleophycus (Pa), Teichichnus (Tc), and Taenidium (Tn), in D Thalassinoides (arrows), and in E Skolithos (arrows). Northward in the Potiguar Basin (Fig. 3), the Barreiras Formation also displays clear evidence of deposition by marine-influenced processes.The most common sedimentary rock type is known as shale, made up of tiny silt or clay particles cemented together. Tiny particles are easily carried along by moving water. Thus, in uniformitarian thinking, shale particles take an inordinate amount of time to fall through a column of water and settle on the bottom, even when the water is completely calm. Some shales are black in color, loaded ...This chapter focuses on the ichnology of tidally influenced environments in “shallow-water” (i.e., proximal) clastic settings: dominantly embayments, bays and estuaries (henceforth marginal-marine settings). Although tides may occur in oceanic (i.e., distal) locales, the amplification of tidal currents in marginal-marine settings leads to ...Trace fossil distribution and bioturbation index (BI) in the studied Holes U1308A and U1308B, through the differentiated intervals 18 to 7. Note the absence of discrete trace fossils in intervals 12 and 13 (BI = 0) of Hole U1308A and the presence of Thalassinoides and Planolites (BI = 2-3) in the corresponding intervals in Hole U1308B.Palaeophycus, Planolites, Scotolithus. Outer shelf with sandstones deposited . by storm-generated geostrophic . currents below storm wave base. Shale during fair weather. Water depth 50-100 m.PDF | On Jan 1, 1999, Mazlan Madon published Chapter 22. Sabah Basin | Find, read and cite all the research you need on ResearchGate8 Şub 2013 ... Planolites. In contrast, on the Gakkel Ridge only uncertain ... Planolites, or rather Planolites-like traces were observed in all cores.Chondrites targioni Brongniart, Planolites isp., and Bergaueria isp. were found in these deposits. In contrast to the other sections, the lithofacies are often arranged in fining-upward cycles (S wbiot → TS biot → T biot). Muscovite and coalified plant detritus are observed rarely. There is a slight sideritization at the top of the section.Cooper, John, Alexis Godet, Michael C. Pope, and Jeffrey Hardwick, 2017, Stratigraphic Evolution of the Upper Cretaceous Austin Chalk Group on the San Marcos Arch and its Relation to Deep Basement Structure: 67th Annual GCAGS Convention and 64th Annual GCSSEPMPlanolites, although strictly a junior synonym of Palaeophycus, can be retained as a valid ichnotaxon on the basis of stability of nomenclature. As emended by Pemberton and Frey (1982) and ...The present burrows are small and thin burrow and much similar to Planolites montanus [19]. It is also correlated to this ichnospecies from Bagh Group of Madhya Pradesh (Badve et al.; Sanganwaret ...The distinction between turbidites, contourites and hemipelagites in modern and ancient deep-water systems has long been a matter of controversy. This is partly because the processes themselves show a degree of overlap as part of a continuum, so that the deposit characteristics also overlap. In addition, the three facies types commonly occur within …Planolites is an ichnogenus found throughout the Ediacaran and the Phanerozoic that is made during the feeding process of worm-like animals. The traces are generally small, 1–5 mm (0.039–0.197 in), unlined, and rarely branched, with fill that differs from the host rock. 3 May 2015 ... The trace fossil association contains Chondrites, Trichichnus, Palaeophycus, Planolites, Protovirgularia, ?Rosselia, Schaubcylindrichnus ...Planolites is a eurybathic, facies-crossing ichnogenus, which occurs from the Precambrian to the Recent (Häntzschel, 1975). It is referred to polyphyletic, vermiform deposit feeders producing active backfilling (e.g., Pemberton and Frey, 1982; Fillion and Pickerill, 1990).Simple horizontal trails and burrows (Planolites sp.), chains of faecal pellets (Neonereites sp.) and arthropod scratch marks (Monomorphichnus sp.) also occur in this assemblage. Assemblage 3 is distinguished by its abundance and diversity of taxa, many of which are large and conspicuous — 35 ichnofossil taxa are recognised.One of the oldest quotations is from Schütte and Merckel (1761), who mentioned “Beinstein, Rhizolithi, versteinte Wurzeln oder Wurzelsteine” from Jena and obviously related these ‘bones and fossil root casts’ partly to Protovirgularia, Planolites and Rhizocorallium. Batsch (1802) meticulously described “Wurm- und Zungen-kalkstein ...Recovery – 2011 CSPG CSEG CWLS Convention 2 many of the reservoirs in the Western Canada and Williston basins (Creaney and Allen, 1990; LeFever et al. 1991). The regional stratigraphy of the Exshaw/Bakken interval has been studied extensively (ChristopherThe Palaeogene sedimentary succession of the Inner Fold Belt, exposed in Botsa, Kohima District of Nagaland, contains a rich ichnofossil assemblage, with trace fossils being common in the lower par...However, at present there exist no compelling evidence that any of the Puncoviscana trace fossils are Ediacaran (Buatois and Mangano, 2005). Several reports from the former Soviet Union of latest Vendian (Rovno, Nemakit Daldynian) trace fossils (e.g., Palij et al., 1979; Bekker and Kishka, 1991) are not included as they are likely Cambrian as ...PA to PD = parasequences A to D. TS1 to TS4 = transgressive surfaces 1 to 4. TS4 also is a sequence boundary. Figure 6 --General view of tidal-flat deposits at Waverly. Note laterally persistent sand-flat facies (unit B1) overlying mud- to mixed-flat facies (unit A1). Figure 7 --Bedding-plane physical sedimentary structures in unit A1.A - Planolites montanus Rich ter, 1937, pos i tive hyporelief on thin bed of siltstone; NiedŸwice IG-1 bore hole. B - Planolites beverleyensis (Bill ings, 1862), pos i tive hyporelief on me ...Calcareous sandy contourites with Planolites from Cyprus. Samples with Planolites from calcarenitic contourites of Cyprus were obtained from the central part of contourite bi-gradational sequences (Fig. 2A and B).The Planolites specimens were found in thin calcarenite beds displaying wavy lamination and gradational boundaries, recently interpreted as bioclastic sandy bottom-current deposits ...Planolites Nicholson, 1873 DESCRIPTION: Simple, unlined, unbranched cylindrical or subcylindrical infilled burrows, straight to gently curved, horizontal to oblique to bedding planes. Burrows may cross-over. Lithology of fill differs from that of host rock. BEHAVIOR(S): Fodinichnia (deposit feeding), domichnia (dwelling). ENVIRONMENTAL SETTINGS: Shallow marine - deep marine deposits to ...Abundant and delicate trace fossils Oldhamia are found in the Cambrian Series 2 Xinji Formation in the Shimengou section of the Lushang area, western Henan, North China, with co-occurring trace fossils Gordia, Palaeophycus, Planolites, Taenidium, and Treptichnus on the surface of sandstones. Here, we report the undermat miner structures and ...@article{osti_5953635, title = {Trace fossils of Marnoso-Arenacea Formation (Miocene), northern Italy: preliminary data}, author = {McBride, E F and Picard, M D}, abstractNote = {Many horizons in the Marnoso-arenacea Formation contain rare to abundant trace fossils at numerous localities. Slope, fan, and basin-plain deposits have trace fossils dominated by the Nereites ichnofacies but include ...This paper documents the occurrence of Skolithos linearis, Planolites beverleyensis, and Thalassinoides isp. in the Cárdenas Formation (Late Cretaceous) ...Planolites Name Homonyms Planolites Nicholson, 1873 Bibliographic References. Fedonkin, M. A. (1994). Vendian body fossils and trace fossils. Pp. 370-388 in Nobel Symposium 84 Staff and Stefan Bengtson (eds): Early Life on Earth. Columbia University Press. Fedonkin, M. A. (1994).These ichnofossils are Macaronichnus, Ophiomorpha, Palaeophycus, Planolites, Phycosiphon, Rosselia, Rhizocorallium, Skolithos, Teichichnus, and Thalassinoides. About 70% of the permeability values fall below 10mD. Bioturbation at low BI was observed to enhance permeability while increased bioturbation reduced permeability. Porosity had been ...Seven trace fossil genera and four body fossil genera have been found in the sandstone facies (Buena Vista Member) of the Cuyahoga Formation (Lower Mississippian) at Pine Quarry Park in Reynoldsburg, Ohio. Ichnogenera identified are Scalarituba, Gordia, Zoophycos, Helminthoidia, Phycosiphon, Planolites, and Laevicyclus.There are reports of simple trace fossils of Planolites type that are considered by some researchers to be older than the main Ediacaran assemblages in Australia (e.g., Walter et al., 1989; Jenkins et al., 1992). This correlation requires further confirmation but may suggest an even older zone with short simple trace fossils.The sandier upper portions of the coarsening-upward units are typically thoroughly bioturbated, showing a textural and colour burrow-mottling and obscuring any primary sedimentary structures; recognizable trace fossils include Teichichnus isp., Helminthopsis isp., Chondrites isp. and Planolites isp.The common ichnogenera are Ancorichnus, Beaconites, Cystichnium,. Muensteria, Palaeophycus, Planolites, Psammichnites,. Scoyenia, Steinichnus, Taenidium, Gordia ...Planolites is the most common ichnogenus; other common ichnogenera are Palaeophycus, Rhizocorallium, and Zoophycos. (2) Regional marker beds composed of bivalves and brachiopods place the section in the Ladinian, in agreement with the previously published stratigraphic data about the Muschelkalk facies in the Iberian Range.Jan 1, 2017 · Planolites are commonly found isolated from Thalassinoides networks within beds with relatively low bioturbation. The matrix of these beds varies from mudstone to packstone and is commonly argillaceous, though Planolites is found associated with detrital conglomeratic material in one bed ( Fig. 5 F). Remarks.—Planolites montanus is distinguished from other ichnospecies of Planolites by its tortuous course with horizontal and inclined segments, penetrative nature, and lack of …Jan 16, 2021 · Palaeophycos. Macaronichnus, Planolites and Palaeophycus are very similar burrows that are often confused with each other. All three are non-branching, curvilinear, horizontal tubes. Macaronichnus is a horizontal, active fill, unlined burrow tube made by a deposit feeder in which the fill is identical to the enclosing matrix, but has a mantle ... Interbedded sandstones and mudstones contain Teichichnus, Planolites, Terebellina, Arenicolites, Bergaueria, Rosselia, Asterosoma, Cylindrichnus, Thalassinoides, and fugichnia. Burrowed incised valley conglomerates and pebbly sandstones mainly record channel fills of tidal inlets or flood-tidal deltas at wave-dominated estuary mouths.Trace fossils Thalassinoides horizontalis, Thalassinoides callianassa and Planolites developed in the Longwangmiao Formation, and the sharp edges of mottled dolomite are similar to these trace fossils. The beds are intensely bioturbated. In the burrow network, the sediments and burrow fill were coarse and loose with little clay, and it is ...An integrated study of sediments was conducted to examine the facies architecture and depositional environment of the Cretaceous Pab Formation, Rakhi Gorge, and Suleiman Ranges, Pakistan. This research focused on analyzing architectural elements and facies, which are not commonly studied in sedimentary basins in Pakistan. To identify lithofacies, outcrop analysis and section measurement were ...The Planolites and Thalassinoides ichnofabric displays a high abundance, occupying the 50-85% of the wavy calcarenitic beds (BI=3-4), and a low diversity of traces (dominant Planolites and some Thalassinoides) (Figs. 6.3 E and F). Primary depositional structures are generally absent probably due to the abundance of bioturbation. Monospecific Planolites isp. in Facies-2 and enig- matic tubes in Facies-4 were given status of sepa- rate trace fossil assemblages following Keighley and.is ophiomorpha and planolites. High energy flow regime. Distributary Channel 21.89 8 – 29 (Estimated) 1215 510 –1800 (Estimated) b 4101 – 4106 5 Fine to very fine-grained sandstone, well sorted, wave ripple lamination, current ripple and planar current bedding. High energy regime reworked by waves Upper shoreface 25.25 16 – 29 (Estimated)Helicodromites, Nereites, Ophiomorpha, Planolites, Phycodes and Thalassinoides are observed in the marly-limestones and sandstones. The giant trace fossils, located in the lower surface of an indurated sandy marlstone bed of 40-50 cm thickness, are horizontal tubular burrows with a mean diameter of 19 cm reaching a maximum of 32 cm.Planolites ichnoassemblage: Planolites: Unlined, subhorizontal, faint tubular structures. Fill different from matrix. 1-5 mm in diameter. Represents the active backfill of a wandering deposit-feeder or carnivore (Pemberton and Frey, 1982, Keighley and Pickerill, 1995). Arenicolites: Lined U-shaped burrows. 1-3 mm in diameter. Produced by a ...Proximal Cruziana or distal Skolithos ichnofacies: Skolithos, Planolites, Ophiomorpha, Terebellina. Moderate amount of marine fossils: small-sized, randomly oriented bivalves and bioclasts. 2a. 3a. Micaceous siltstones and VFS with rare thin-shelled bivalves: 5-6: Settling from suspensionSelected Mesozoic taxa of Alaska. This list of the Mesozoic life of Alaska contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alaska and are between 252.17 and 66 million years of age. †Actinoceramus Life restoration of the Late Cretaceous dome-headed dinosaur Alaskacephale and inset diagram depicting it with an anachronistic ...Planolites is known to occur in strata of Neoproterozoic and younger ages. Introduction: Geological investigations were carried out north of Nagarjuna Sagar Dam in the Nalgonda district of Andhra Pradesh, in an area bounded by 16°35'N and 16°38'N latitudes and 79°07' E to 79° 18'E longitudes, on the northwestern flank of the Cuddapah Basin ...... Planolites, Planolites montanus, Planolites beverleyensis, Planolites annularis, Siphonites, Paleomendron, and Phycodes palmatum. All these trace fossils ...Bioturbation is the process of the biological makeover of sediments by benthic organisms (Giere, 2009) ( Fig. 2.3 ). Benthic burrowers are the major drivers of bioturbation, especially crustaceans and annelids for macrobenthos; ostracods, nematodes, and copepods for meiofauna. Bioturbation effects can extend up to 20 cm depth in the sediments.types include Planolites,Teichichnus, Chondrites, and possibly a zoned variety of Asterosoma. Sets of parallel ribs (2-3 cm wide) were found at the base of a sandstone bed (1-3 cm thick) from the base of the Chattanooga Shale. Similar features, interpreted as arthropod traces, were described from the Chattanooga Shale of Kentucky (Jordan, 1985).Duapuluh satu dari semua iknotaksa tersebut adalah dominan yang menyusun unit iknofabrik. Akibatnya, 21 asosiasi iknofosil dapat ditentukan. Namun demikian, hanya enam dari 21 asosiasi iknofosil tersebut adalah asosiasi iknofosil utama antara lain asosiasi-asosiasi Ophiomorpha, Skolithos, Paleophycus, Thalassinoides, Planolites dan Chondrites.Description: The studied Planolites consist of simple burrows, displaying a cylindrical to sub-cylindrical shape without branching, they are always horizontal, straight, and filled with black micritic material, with a diameter not exceeding 1 mm. Planolites isp. co-occurs with Zoophycos brianteus in the upper subunit of the marlstone ...Download scientific diagram | Frequency distributions of burrow aspect ratio values of (A) Planolites from the Naharigawa Formation, and (B) Planolites from modern marine sediments. (C ...Scalarituba and Planolites are found throughout the beds. Together, the trace fossils ofthe upper part ofthe quarry are indicative ofthe Cruziana ichnofacies. Lowerin the section the facies seems to beofthe Skolithos ichnofacies. Associated body fossils found are Platycrinities sp.,Chondrites (and Planolites) as an oxygenation indicator (Savrda and Bottjer, 1991; Bottjer and Savrda, 1993), and Planolites in distinguish-ing the several ichnofabrics with Ophiomorpha nodosa (Pollard et al., 1993). As Byers (1982) noted, not all au-thors have seen their ichnotaxa dis-tributions in terms of SeilacherianThe ichnofaunas of the latest Precambrian (Vendian) rocks include some forms whose range does not extend into the Cambrian (e.g. Bilinichnus, Intrites, Palaeopascichnus, Vendichnus, Vimenites) and others which continue throughout most or all of the Phanerozoic (e.g. Arenicolites, Aulichnites, Cochlichnus, Didymaulichnus, Gordia, Neonereites ...The Upper Maastrichtian fluvial Hell Creek Formation of the Fort Peck Lake area, Montana (and regional equivalents) is notable for its vertebrate fossils and for the K-Pg mass extinction at or near its upper contact. Despite intense study, internal stratigraphy of the Hell Creek Formation is still poorly constrained, hindering study. This work reviews the stratigraphy of the Hell Creek ...Ichnogenus Planolites Nicholson, 1873. Planolites isp. Fig. 6 E. One loose slab was collected in which Planolites isp. occurs as hypichnial, simple, straight to slightly curved cylindrical full-relief structures, 2-3 mm wide, traced for a distance of up to 27 mm.On bedding planes dominated by Planolites traces, at least 60% of the ichnofauna (based on visual estimation) was comprised of Planolites. Other types of ichnofossils observed on studied bedding planes, in limited numbers, included Rusophycus, Cruziana, Bergaueria, and putative trilobite scratchmarks ( Fig. 2 ). 5.2.Planolites has been interpreted as representing the active backfilling of an interim burrow by a mobile, deposit-feeding, worm-like organism (Pemberton and Frey 1982), while arthropods have been ...Planolites Allochemic Planolites beverleyensis, Palaeophycus tubularis, Rhizocorallium irregulare, Phycodes cf. Cruziana Low energy conditions limestone - GFM palmatus. of offshore-transition4.2.5 Marlstone with Nodular Bedding: Planolites montanus-R. commune Assemblage. This lithofacies occurs in the lower part of shallowing-upward cycles and consists of thinly bedded and alternating mudstone and marlstone. Various disruptions of the bedding result from synsedimentary deformation, reworking, or diagenetic overprint.Логин. Пароль. Регистрация · Забыли пароль? | Палеонтология, палеонтологический портал "Аммонит.ру" | English version of paleontological portal Ammonit.ru ...PLANOLITES-PALAEOPHYCUS DILEMMA S. GEORGE PEMBERTON* AND ROBERT W. FREY Department of Geology, University of Georgia, Athens 30602 ABSTRACT-Because of fundamental differences between trace fossils and body fossils, ichnologic nomenclature is beset with difficulties. Foremost is inconsistent treatment by the International Com-Teichichnus assemblages, forming monospecific occurrences or with Planolites, in fine-grained, heterolithic facies seem to be remarkably persistent through geologic time. The studied trace fossils yield insights on attempts of some clades to expand into stressful brackish-water settings early in their evolutionary histories.Planolites isp. is the only trace fossil observed within Facies B2. 2.2. FA1: Upper shoreface/foreshore (interpretation) Abundant scour surfaces and trough to planar cross-stratification are indicative of deposition in an environment dominated by deposition from traction, frequent wave reworking and intermittent, high current velocities.These would be given the name Planolites. In places, you can see circular cross- In places, you can see circular cross- sections of vertical burrow tubes that are filled with sandy sediment (see the snapshot).However, shallow bioturbation, dominated by small Planolites, persists for ~3 m above the formational contact at Festningen before disappearing 2.Phase II mainly consists of smaller Planolites isp. A, Thalassinoides isp. and Chondrites isp., recording a transition from softground to firmground. Only occasional smaller Planolites isp. A occur in Phase III without any associated vertical burrows. Ichnodiversity and bioturbation index from Phase I to Phase III show a step by step decline ...Simple lacustrine trace fossils (e.g., Planolites, Helminthoidichnites) are more common in sublittoral and littoral facies associated with the arkosic sandstones of the Wilkins Peak Member than with lacustrine facies of the saline to hypersaline lake not influenced by freshwater input (Fig. 12.13a). Less extreme conditions would have ...Traces include Ophiomorpha-, Skolithos-, Gyrolithes-, Monocraterion-, Siphonites-, Rosselia-, Planolites-, and Palaeophycus-like burrows. Some of the traces are relatively large (4-7 mm diameter), particularly Maldanid and …Feb 18, 2008 · On bedding planes dominated by Planolites traces, at least 60% of the ichnofauna (based on visual estimation) was comprised of Planolites. Other types of ichnofossils observed on studied bedding planes, in limited numbers, included Rusophycus, Cruziana, Bergaueria, and putative trilobite scratchmarks ( Fig. 2 ). 5.2. Planolites-Rhizocorallium ichnoassemblage (Pl-Rh; Fig. 7D-G). The Pl-Rh ichnoassemblage is common in the lower part of the successions in thin-bedded limestones with various fossils with high degree of fragmentation as well as cross-bedding and symmetrical ripple cross-lamination.Recovery – 2011 CSPG CSEG CWLS Convention 2 many of the reservoirs in the Western Canada and Williston basins (Creaney and Allen, 1990; LeFever et al. 1991). The regional stratigraphy of the Exshaw/Bakken interval has been studied extensively (ChristopherAn upper shoreface–lower shoreface trend from the Ophiomorpha–Palaeophycus ichnofabric to the Chondrites–Planolites ichnofabric represents a deepening-upward sequence. An integrated sedimentological and ichnological approach has allowed the recognition of the internal organization of the sequence and …This architectural style is observed in a single ichnospecies, Planolites isp., which is known to occur in FA2a, FA3 and FA4, only recorded on bedding surfaces. This trace is most abundant in FA2a, with infrequent dense clusters occurring on true substrates within FA3, in association with Psammichnites (Davies & Shillito, Reference Davies and Shillito 2018 ).Outcrop TR.01 (a), with inset position for (b) bioturbation of skolithos and planolites in the bottom of shales, and (c) planar crossbedded in fine to medium quartz sandstones capped by clay-plug.. Calcareous siltstone beds, which commonly occur interbedded witYou are free: to share - to copy, distribute and transmit the work; Planolites, a simple horizontal trace fossil, represents the dominant type of bioturbation in these units. Planolites is found in a range of diameters, indicating that … (An) reworking Planolites isp. (Pl) with bioclastic The Hanneh Member (Cambrian Stage 5) of the Burj Formation and the Umm Ishrin Formation of Jordan represent a transgressive-regressive succession that contains twenty-eight ichnotaxa, including vertical burrows (Arenicolites isp., Diplocraterion isp., Gyrolithes polonicus, Rosselia isp., Skolithos linearis, escape trace fossils), horizontal ...Explore Research Products in the NSF-PAR. Search For Terms: × The Cenomanian-Turonian boundary event (C/TBE) is studied in the s...

Continue Reading