Aspects of clavate borings in the type Maastrichtian (Upper Cretaceous) of the Netherlands and Belgium

2013 ◽  
Vol 92 (2-3) ◽  
pp. 133-143 ◽  
Author(s):  
S.K. Donovan ◽  
J.W.M. Jagt
Keyword(s):  
The Netherlands ◽  
Upper Cretaceous ◽  
Three Dimensional ◽  
Rotten Wood ◽  
Type Area

We describe a collection of borings in carbonate and xylic substrates (Gastrochaenolites ispp., Teredolites longissimus Kelly & Bromley), some of them containing their producers, from the Maastricht and Houthem formations (late Maastrichtian and early Danian) in the type area of the Maastrichtian Stage, but mainly from the ENCI-HeidelbergCement Group quarry, St. Pietersberg (southern Limburg, the Netherlands). Included are specimens of Gastrochaenolites dijugus Kelly & Bromley, showing different modes of formation of the figure-of-eight aperture, either as part of the lining, incorporating the substrate or both. Gastrochaenolites lapidicus Kelly & Bromley was produced by the gastrochaenid bivalve Gastrochaena, whereas G. orbicularis Kelly & Bromley is the trace of Jouannetia supracretacea (De Ryckholt). Bioglyph-like infills of G. orbicularis and G. torpedo Kelly & Bromley rather represent external moulds of the producing bivalves; they are termed pseudobioglyphs herein. Teredolites longissimus is preserved as clusters of in situ, parallel to sub-parallel tubes, although the woody substrate has decayed, and disarticulated fragments of calcareous tubes have been released from rotten wood. The latter include some specimens filled by flint and show good three-dimensional preservation. Some notes on the taxonomy of the producing bivalve taxa are added.

Jagtia kunradensis, a new genus and species of clawed lobster (Decapoda: Nephropidae) from the Upper Cretaceous (Upper Maastrichtian) Maastricht Formation, The Netherlands

2000 ◽  
Vol 74 (2) ◽  
pp. 224-229 ◽  
Author(s):  
Dale Tshudy ◽  
Ulf Sorhannus
Keyword(s):  
The Netherlands ◽  
Deep Water ◽  
Phylogenetic Relationships ◽  
Upper Cretaceous ◽  
New Genus ◽  
New Genus And Species ◽  
Type Area ◽  
Fossil Form ◽  
Upper Maastrichtian

A new genus and species of clawed lobster, Jagtia kunradensis, is described from the Upper Cretaceous (Upper Maastrichtian) Kunrade Limestone facies of the Maastricht Formation, The Netherlands. Three nephropid lobster genera and at least three species (Oncopareia bredai Bosquet, 1854, sensu Tshudy, 1993, Oncopareia sp. Tshudy, 1993, Hoploparia beyrichi Schlüter, 1862, and Jagtia kunradensis) have now been collected from limestones of the Maastrichtian type area (southeastern Netherlands and northeastern Belgium). Cladistic methods were employed in re-evaluating the phylogenetic relationships of the nephropid lobsters, including Jagtia. These analyses indicate that Jagtia is part of a clade that includes the recent Thymops and Thymopsis. The new genus is the first fossil form to be closely allied with these deep-water genera.

A new paguroid from the type Maastrichtian (upper Cretaceous, the Netherlands) and erection of a new family

2017 ◽  
Vol 188 (3) ◽  
pp. 17 ◽  
Author(s):  
René H.B. Fraaije ◽  
Barry W.M. Van Bakel ◽  
John W.M. Jagt
Keyword(s):  
The Netherlands ◽  
Upper Cretaceous ◽  
Natural Sciences ◽  
Morphological Features ◽  
Hermit Crabs ◽  
New Taxon ◽  
Close Resemblance ◽  
New Family ◽  
Type Area ◽  
Upper Maastrichtian

On the basis of a fragmentary carapace a new extinct paguroid, Annuntidiogenes massetispinosus n. sp., is described from the upper Meerssen Member (Maastricht Formation, upper Maastrichtian) of the Maastrichtian type area in the southeast Netherlands. The new taxon represents the fifth and stratigraphically youngest member of this Mesozoic genus that shows a remarkably close resemblance to the extant diogenids Aeropaguristes Rahayu and McLaughlin, 2010 (Rahayu DL, McLaughlin PA. 2010. Areopaguristes, a generic replacement name for Stratiotes Thomson, 1899 (Crustacea: Decapoda: Paguroidea: Diogenidae). Zootaxa 2509: 67–68), Paguristes Dana, 1851 (Dana JD. 1851. Conspectus crustaceorum quae in orbis terrarum circumnavigatione, Carolo Wilkes e classe reipublicae foederatae duce, lexit et descripsit. (Preprint from) Proceedings of the Academy of Natural Sciences, Philadelphia 5: 267–272) and Pseudopaguristes McLaughlin, 2002 (McLaughlin PA. 2002. Pseudopaguristes, a new and aberrant genus of hermit crabs (Anomura: Paguridea: Diogenidae). Micronesica 34(2): 185–199). Morphological features of paguroid carapaces, not previously used by neontologists, form the basis for a further systematic refinement of the Paguroidea, with the erection of a new family, the Calcinidae n. fam.

DRIEDIMENSIONAAL NIEUWS

2019 ◽  
Vol 3 (2) ◽  
pp. 128-152
Author(s):  
Tessel X. Dekker
Keyword(s):  
Nineteenth Century ◽  
The Netherlands ◽  
Mass Medium ◽  
Three Dimensional ◽  
Reciprocal Relationship ◽  
Visual Medium ◽  
The Public ◽  
Wax Models

THREE-DIMENSIONAL NEWS The Amsterdam wax museum as a competitor of the illustrated newspaper, 1882-1919 The nineteenth-century wax museum can be viewed as a contemporary mass medium that showed people scenes from the news. The Nederlandsch Panopticum was the first of its kind in the Netherlands, located in Amsterdam between 1882 and 1919. As an informative visual medium, the Panopticum had to compete with other media, like the illustrated newspaper, for the attention of the public. At the same time, the wax museum also depended on photographs published in these same papers: wax models were often, and in the course of time almost exclusively, modelled after photos. This reciprocal relationship can be seen as an example of ‘intermediality’. In the end, the wax museum lost ground, foremost, to the new mass medium of the time, cinema, which took over both as an urban attraction and as a popular visual medium.

scholarly journals New plesiosaurid material from the Maastrichtian type area, the Netherlands

2019 ◽  
Vol 98 ◽  
Author(s):  
Feiko Miedema ◽  
Anne S. Schulp ◽  
John W.M. Jagt ◽  
Eric W.A. Mulder
Keyword(s):  
The Netherlands ◽  
Caudal Vertebra ◽  
Type Area ◽  
Juvenile Individual

Abstract Here we report on a newly collected, well-preserved vertebral centrum of a plesiosaur from the type area of the Maastrichtian Stage in southern Limburg. The specimen is interpreted as a caudal vertebra that originated from an osteologically immature or juvenile individual, as evidenced by the position of the pedicular facets, the presence of a notochord pit and the absence of fused neural arches. It adds to the meagre record of sauropterygians in the area.

scholarly journals Rib fracture in Prognathodon saturator (Mosasauridae, Late Cretaceous)

2004 ◽  
Vol 83 (4) ◽  
pp. 251-254 ◽  
Author(s):  
A.S. Schulp ◽  
G.H.I.M. Walenkamp ◽  
P.A.M. Hofman ◽  
B.M. Rothschild ◽  
J.W.M. Jagt
Keyword(s):  
The Netherlands ◽  
Late Cretaceous ◽  
Upper Cretaceous ◽  
Internal Surface ◽  
Stress Fractures ◽  
Rib Fracture ◽  
Agonistic Behaviour ◽  
As Stress ◽  
Marine Reptile

AbstractTwo unusual bumps occur on the internal surface of a rib of the marine reptile Prognathodon saturator from the Upper Cretaceous (Maastrichtian) of Maastricht, The Netherlands. These bumps are interpreted as stress fractures, possibly related to agonistic behaviour.

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