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Gnathichnus

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Echinoid grazing trace  <b>Gnathichnus</b> pentax  Bromley 1975 , on the surface o...
Published: 01 November 2013
Fig. 4. Echinoid grazing trace Gnathichnus pentax Bromley 1975 , on the surface of a belemnite guard from the Speeton Clay Formation of Speeton, Yorkshire, TF 277. Scale bar 1 mm.
Image
Regular echinoid grazing traces  (<b>Gnathichnus</b> pentax  Bromley) on left valv...
Published: 01 November 2008
Fig. 6. Regular echinoid grazing traces (Gnathichnus pentax Bromley) on left valve of Gryphaea arcuata Lamarck, upper Scunthorpe Mudstone Formation (Sinemurian; Early Jurassic), 2004 exposure north of Scunthorpe, North Lincolnshire (NGR SE 8829 1461–8812 1456). Field of view is approximately
Series: SEPM Short Course Notes
Published: 01 January 2007
DOI: 10.2110/pec.07.52.0027
EISBN: 9781565761407
... and geographically recurring archetypal ichnofacies that demonstrate temporal and global recurrence have been defined. Most are named for a representative ichnogenus: Scoyenia , Mermia , Coprinisphaera , Trypanites , Entobia , Gnathichnus , Teredolites , Glossifungites , Psilonichnus , Skolithos...
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Journal Article
Published: 01 November 2013
Proceedings of the Yorkshire Geological Society (2013) 59 (4): 227–245.
...Fig. 4. Echinoid grazing trace Gnathichnus pentax Bromley 1975 , on the surface of a belemnite guard from the Speeton Clay Formation of Speeton, Yorkshire, TF 277. Scale bar 1 mm. ...
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Journal Article
Journal: PALAIOS
Published: 01 December 2011
PALAIOS (2011) 26 (12): 754–766.
... of Glossifungites (two different types), Entobia, and Gnathichnus ichnofacies. Trace-fossil analysis showed that lithology and media consistency exerted considerable control on the development of the different ichnocoenoses and that there was a clear decrease in hydrodynamic energy from a coastal to a shallow-water...
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Torrellano section. A) Outcrop view of the uppermost Miocene (Messinian)–Pl...
in > PALAIOS
Published: 01 December 2011
, which locally records the Gnathichnus ichnofacies.
Image
Agua Amarga section. A–B) Outcrop view and diagram of the uppermost Miocene...
in > PALAIOS
Published: 01 December 2011
(arrows) with hardground colonization of annelids and bivalves (Gastrochaenolites torpedo and Trypanites isp.). D) Close-up view of shell accumulation that records post-mortem superficial colonization. E) Free-lying bivalve aggregate mainly encrusted by epilithics and recording the Gnathichnus ichnofacies.
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Examples of colonization on hard substrata. A) Large oncoid (15 cm in diame...
in > PALAIOS
Published: 01 December 2011
of Pliocene, CAM section. F) Coastal rolling stone with undifferentiated Gastrochaenolites, echinoid-grazing traces (probable Gnathichnus isp.), Maeandropolydora isp., and Caulostrepsis isp. (endolithic activity of polychaete annelids); base of Pliocene, CAM section.
Journal Article
Published: 01 November 2008
Proceedings of the Yorkshire Geological Society (2008) 57 (2): 107–112.
...Fig. 6. Regular echinoid grazing traces (Gnathichnus pentax Bromley) on left valve of Gryphaea arcuata Lamarck, upper Scunthorpe Mudstone Formation (Sinemurian; Early Jurassic), 2004 exposure north of Scunthorpe, North Lincolnshire (NGR SE 8829 1461–8812 1456). Field of view is approximately...
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Journal Article
Published: 09 February 2017
Journal of Paleontology (2017) 91 (4): 643–661.
... Circolites C. kotoncensis * Mikuláš, 1992 J. / t. DO Mikuláš, 1992 Ericihnus E. bromleyi * Santos et al., 2015 L.M. / t. AGR PAS Santos et al., 2015 E. asgaardi Santos et al., 2015 “ ” “ ” Gnathichnus G. pentax * Bromley, 1975 T. / t. PAS...
Journal Article
Published: 01 January 2007
Journal of Paleontology (2007) 81 (1): 201–208.
... other ichnogenera that describe etching traces or shallow, grooves on the surface of other hard substrates. Osteocallis differs from etchings in shells and rocks, such as Radulichnus Voigt, 1977 and Gnathichnus Bromley, 1975 , by having arcuate, paired (commonly) scratches. Radulichnus...
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Journal Article
Journal: PALAIOS
Published: 15 October 2019
PALAIOS (2019) 34 (10): 453–457.
... and Palaeosabella ( Vinn et al. 2015 ). Less abundant, but still important, Ordovician bioerosion trace fossils in Baltica include Bicrescomanducator ( =Caedichnus , see Wisshak et al. 2019 for synonymy), Gastrochaenolites , Gnathichnus ?, Osprioneides , Oichnus , Pinaceocladichnus , Rogerella...
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Journal Article
Journal: PALAIOS
Published: 01 August 2010
PALAIOS (2010) 25 (8): 540–545.
... is the “ornament on a burrow wall produced by the life activity of the occupant” ( Bromley, 1996 , p. 342). We accept the more restrictive approach advocated by Bromley (1996) in order to exclude surface scratchings and gnawings (e.g., Gnathichnus and Radulichnus ) from the definition of bioglyph. Indeed, we...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 December 2004
PALAIOS (2004) 19 (6): 565–573.
... deposit is different from the diverse assemblage of borings associated with either the Entobia or Gnathichnus ichnofacies for post-Paleozoic marine rocky shores ( Bromley and Asgaard, 1993 ; de Gibert et al., 1998 ). Although sponge borings ( Entobia ) are present in oysters from limestone units...
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Journal Article
Journal: PALAIOS
Published: 01 May 2015
PALAIOS (2015) 30 (5): 353–361.
... Gnathichnus pentax , interpreted to have been caused by grazing echinoids); however, they noted an absence of evidence for the chemosynthetic stage which had been previously predicted. This was suggested to have been due either to the shallow-water nature of the fall or to the small size of the specimen...
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Journal Article
Published: 01 July 2012
Journal of Paleontology (2012) 86 (4): 616–625.
... superior de la Cuenca del Guadalquivir, (Lepe, Huelva, España) . Coloquios de Paleontología , 46 : 161 – 174 . Mayoral E. Muñiz F. 1996a . La Icnofacies de Gnathichnus en el...
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Series: SEPM Short Course Notes
Published: 01 January 2007
DOI: 10.2110/pec.07.52.0095
EISBN: 9781565761407
... and the Gnathichnus Ichnofacies to either serve as subsets of the Trypanites Ichnofacies, or as its replacement (cf. De Gibert et al. 1998 ). In reality, these new additions are closely associated with tiers. The Entobia Ichnofacies is broadly similar to the Trypanites Ichnofacies, in that it corresponds...
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Series: Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.228.01.02
EISBN: 9781862394766
...) Bromley & Asgaard (1991) Mermia Lacustrine turbidites Buatois & Mángano (1993) Entobia Subdivision of Trypanites (boring traces) Bromley & Asgaard (1993) Gnathichnus Subdivision of Trypanites (rasping traces of organisms feeding on the surface of lithic substrates) Bromley...
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Series: Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.228.01.20
EISBN: 9781862394766
... &Avni ( 1988 , in association with body fossils of the echinoid Goniopygus menardi ) and Mikuláš (1992) . Jurassic echinoid pits were reported by Fürsich (1979) . The range is from Jurassic to Recent. There are surprisingly few reports of Gnathichnus of Neogene and Palaeogene age (e.g...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 January 2010
PALAIOS (2010) 25 (1): 24–39.
..., gravels, and bivalve shells, and regular echinoid grazing marks ( Gnathichnus ) on bivalves. Irregular echinoid burrows ( Bichordites ) and polychaete trace fossils ( Macaronichnus ) also occur in some of the sandy interbeds. The abundant bioclasts show evidence of disarticulation and abrasion...
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