Boxtel, Netherlands
Boxtel, Netherlands

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Gasparic R.,Oertijdmuseum de Groene Poort | Hyzny M.,Natural History Museum | Hyzny M.,Comenius University
Papers in Palaeontology | Year: 2015

A new decapod crustacean faunule is described from the early Miocene of the Slovenian part of the Styrian Basin. The Ivnik Beds exposed at the Činžat locality contain seven species: Calliax michelottii (Axiidea: Callianassidae), Lepidophthalmus paratethyensis sp. nov. (Axiidea: Callianassidae), Jaxea kuemeli (Gebiidea: Laomediidae), Styrioplax exiguus (Brachyura: Chasmocarcinidae), Goneplax gulderi (Brachyura: Goneplacidae), Neopilumnoplax pohorjensis sp. nov. (Brachyura: Mathildellidae) and Retropluma slovenica sp. nov. (Brachyura: Retroplumidae). Numerous specimens of well-preserved Styrioplax exiguus permitted its redescription and re-assignment of its familial placement to Chasmocarcinidae. Neopilumnoplax pohorjensis sp. nov. constitutes the first fossil occurrence of the genus known to date. The decapod association, as well as other faunal elements, suggests low-energy deep-water depositional environment with epibathyal water depth of more than 125 m. The studied locality is situated in the Ribnica-Selnica graben filled with sediments once deposited in the Central Paratethys sea. Based on the affinities of decapod genera of the Central Paratethys and the Proto-Mediterranean, we conclude that the exchange of decapod faunas between these regions was probably regulated by an anti-estuarine circulation permitting an easier incursion of species from the Proto-Mediterranean into the Paratethys and simultaneous hindering the Paratethyan endemics (Styrioplax) from entering the Mediterranean. © The Palaeontological Association.


Fraaije R.H.B.,Oertijdmuseum de Groene Poort
Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen | Year: 2014

From late Kimmeridgian (Late Jurassic) shallow-marine limestones on the Westerberg, close to Nusplingen (Swabian Alb, southern Germany), highly diverse assemblages of anomurans are recorded. The superfamily Galatheoidea is represented by abundant and relatively large carapaces of Gastrosacus wetzleri, the Paguroidea by comparatively small-sized carapaces, shields and sixth abdominal tergites that are assignable to the families Annuntidiogenidae n. fam., Diogenidae, Gastrodoridae, Parapylochelidae, Pilgrimchelidae n. fam. and Pylochelidae. Such diverse Mesozoic paguroid assemblages have never been recorded previously; they provide evidence of the relative abundance and diversity of paguroids in Late Jurassic shallow-marine settings. Species recorded are: Ammopylocheles mclaughlinae, Ammopylocheles petersi n. sp., Annuntidiogenes jurassicus n. sp., Gastrodorus spp., Housacheles ovalis n. sp., Jurapylocheles iwonae, Masticacheles minimus n. sp., Mesoparapylocheles schweigerti n. sp., Mesoparapylocheles jaegeri n. sp., Parapylochelitergites deductius n. sp., Parapylochelitergites prepustulosus n. sp., Pilgrimcheles kersteni n. sp., Pilgrimcheles vonmeyeri n. sp., Pylochelitergites westerbergensis, Scututergites anteroindentatus n. gen., n. sp., Stagmacaris subcircularis n. sp. and Ululapagurus vanbakeli n. gen., n. sp. The phylogenetic state-of-the-art, as based on carapace morphologies of Mesozoic carapace-based paguroid species known to date is outlined. The average size of Late Jurassic paguroid carapaces is considerably lesser than that of co-occurring brachyurans and galatheoids. Their small size and incomplete preservation of carapaces, with mostly only (part of) the shield retained, explains why fossil paguroids are very often overlooked in the field. © 2014 E.


Several well-preserved remains of a new munidopsid anomuran, Palmunidopsis muelleri n. gen., n. sp., are described from a Late Miocene (Tortonian-Messinian) reef-associated decapod crustacean faunule of southern Cyprus. This is the first record of a Late Miocene representative of the family. The occurrence in very shallow-water, reefal limestones of the Koronia Member (Pakhna Formation) in southern Cyprus is atypical in comparison to the ecology of extant munidopsids. © 2014, Naturalis Biodiversity Center. All rights reserved.


Klompmaker A.A.,Kent State University | Artal P.,Museo Geologico Del Seminario de Barcelona | Fraaije R.H.B.,Oertijdmuseum de Groene Poort | Jagt J.W.M.,Natuurhistorisch Museum Maastricht
Journal of Paleontology | Year: 2011

Representatives of the family Gastrodoridae were exclusively known from Jurassic deposits in central Europe. Here, the first Cretaceous species, Gastrodorus cretahispanicus n. sp., is recorded from reefal strata of the Eguino Formation (Albeniz Unit) of Albian-Cenomanian age, in western Navarra (northern Spain). Not only does the occurrence of the new species extend the stratigraphic range of the family upward for approximately 45 million years into the mid-Cretaceous, it also constitutes the first record of gastrodorids from southern Europe. For over a century, the taxonomic position of the genus Gastrodorus has been debated. It is revised here and the family Gastrodoridae is given a full superfamily status within the Anomura. The genus Eogastrodorus is also redefined. Gastrodorids underwent a remarkable size reduction from the Middle to Upper Jurassic, which may be explained by their migration into reef environments. © 2011 The Paleontological Society.


Klompmaker A.A.,Kent State University | Fraaije R.H.B.,Oertijdmuseum De Groene Poort
Palaeontologia Electronica | Year: 2011

Fossil lobsters from the Netherlands have been described only rarely. This article describes the oldest, marine lobsters from the Netherlands in Middle Triassic Anisian (Muschelkalk) sediments cropping out in the Winterswijk quarry complex. The lobsters include the erymids Clytiopsis argentoratensis and Oosterinkia neerlandica n. gen., n. sp., and the mecochirid Pseudoglyphea cf. P. spinosa. They lived in a low energy, stressed environment with fluctuating salinity levels. This fluctuation might have caused the limited size of the specimens of Clytiopsis argentoratensis compared to related stratigraphically younger and older lobsters. In addition, the low number of specimens collected over decades and the low number of crustacean species is likely to be caused by a combination of the environment itself and a limited preservation potential. © Paleontological Society March 2011.


Fraaije R.H.B.,Oertijdmuseum de Groene Poort | Klompmaker A.A.,Kent State University | Artal P.,Museo Geologico Del Seminario de Barcelona
Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen | Year: 2012

Two new paguroids, Cretatrizocheles olazagutiensis n. gen., n. sp. and Mesoparapylocheles michaeljacksoni n. gen., n. sp., both based on carapaces, are described and added to the very diverse mid-Cretaceous (Albian-Cenomanian) decapod crustacean fauna of the reefal deposits near Alsasua (Navarra, northern Spain). The description of Annuntidiogenes worfi is emended on the basis of a newly discovered, much more complete carapace. Mesoparapylocheles n. gen. is a member of the Parapylochelidae n. fam., whereas Cretatrizocheles n. gen. is a member of the Trizochelinae. These species show that the linea transversalis, introduced by neontologists for a groove lateral and/ or posterior to the cervical groove, is an evolved part of the branchiocardiac groove. © 2012 E. Schweizerbart'sche Verlagsbuchhandlung Stuttgart Germany.


Fraaije R.H.B.,Oertijdmuseum de Groene Poort | Krzeminski W.,Polish Academy of Sciences | Van Bakel B.W.M.,Oertijdmuseum de Groene Poort | Krzeminska E.,Polish Academy of Sciences | Jagt J.W.M.,Natuurhistorisch Museum Maastricht
Acta Palaeontologica Polonica | Year: 2012

Strata with cyanobacterial-sponge buildups of Middle to Late Oxfordian (Late Jurassic) age in the southern Polish Up- lands document the earliest known members of the Pylochelidae. Two new Late Jurassic species of "symmetrical" hermit crabs, Ammopylocheles robertboreki and Jurapylocheles iwonae, are described.Anew term, the massetic region, is intro- duced to describe the equivalent in paguroids of the hepatic region in brachyuran carapaces, because in the former, this re- gion does not reflect the position of the liver but rather an attachment zone of the mandibular muscles.


Klompmaker A.A.,Kent State University | Fraaije R.H.B.,Oertijdmuseum De Groene Poort
PLoS ONE | Year: 2012

Direct animal behavior can be inferred from the fossil record only in exceptional circumstances. The exceptional mode of preservation of ammonoid shells in the Posidonia Shale (Lower Jurassic, lower Toarcian) of Dotternhausen in southern Germany, with only the organic periostracum preserved, provides an excellent opportunity to observe the contents of the ammonoid body chamber because this periostracum is translucent. Here, we report upon three delicate lobsters preserved within a compressed ammonoid specimen of Harpoceras falciferum. We attempt to explain this gregarious behavior. The three lobsters were studied using standard microscopy under low angle light. The lobsters belong to the extinct family of the Eryonidae; further identification was not possible. The organic material of the three small lobsters is preserved more than halfway into the ammonoid body chamber. The lobsters are closely spaced and are positioned with their tails oriented toward each other. The specimens are interpreted to represent corpses rather than molts. The lobsters probably sought shelter in preparation for molting or against predators such as fish that were present in Dotternhausen. Alternatively, the soft tissue of the ammonoid may have been a source of food that attracted the lobsters, or it may have served as a long-term residency for the lobsters (inquilinism). The lobsters represent the oldest known example of gregariousness amongst lobsters and decapods in the fossil record. Gregarious behavior in lobsters, also known for extant lobsters, thus developed earlier in earth's history than previously known. Moreover, this is one of the oldest known examples of decapod crustaceans preserved within cephalopod shells. © 2012 Klompmaker, Fraaije.


Van Bakel B.W.M.,Oertijdmuseum de Groene Poort | Guinot D.,French Natural History Museum | Artal P.,Museo Geologico Del Seminario de Barcelona | Fraaije R.H.B.,Oertijdmuseum de Groene Poort | Jagt J.W.M.,Natuurhistorisch Museum Maastricht
Zootaxa | Year: 2012

Abundant fossil material of extinct brachyurans has revealed morphological details hitherto rarely used in palaeontological studies. Detailed comparisons between extant and extinct material have been carried out, with an emphasis on thoracic sternum, abdomen and appendages. Documented for the first time is the unique character of Raninoidea De Haan, 1839, their 'gymnopleurity', which is not found in their predecessors, the Palaeocorystidae Lorenthey in Lorenthey & Beurlen, 1929. Palaeocorystidae, together with four other families (Camarocarcinidae Feldmann, Li & Schweitzer, 2008; Cenomanocarcinidae Guinot, Vega & Van Bakel, 2008; Necrocarcinidae Förster, 1968 emend.; and Orithopsidae Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross, 2003a emend.), is assigned here to the superfamily Palaeocorystoidea, of similar rank to Raninoidea. Both Raninoidea and Palaeocorystoidea are afforded a subsection rank and referred to as subsection Raninoidia De Haan, 1839 emend. New or emended diagnoses are provided for all higher taxonomic levels, and all members of Raninoidia are listed in an appendix. A unique abdominal holding structure, the double peg, is described for the first time. Its gradual evolution is documented and the phylogenetic implications are discussed. Comparative morphology of the thoracic sternum, abdominal holding structures, the sternumpterygostome configuration, respiratory physiology and spermathecae, all reveal polarities of the raninoidian clade. The configuration of the sternum with the pterygostome, which is related to body strength and respiratory physiological efficiency, differs significantly between the two superfamilies, Raninoidea showing a derived condition. An evolutionary lineage, leading from Palaeocorystidae, via Lyreididae to Raninidae is recognised, and an intermediate form, Marylyreidus punctatus n. comb., is discussed. Several hitherto unknown structures in extant raninoids, an obstruction system for the abdomen and a telson protection valve, are documented. The cryptic spermathecal apertures of raninoids, so far barely understood, are re-examined and compared to those of palaeocorystoids. The phylogeny of Podotremata, often debated in the recent literature, is discussed anew on the basis of these observations. A position of Raninoidea within Eubrachyura, recently claimed by several authors, cannot be maintained, an observation supported by documentation of the basal condition of Raninoidia. A new basal lyreidid clade, Marylyreidinae n. subfam., is erected, whereas new genera and species include Antonioranina n. gen. (Cyrtorhininae), Bournelyreidus teodorii n. gen., n. sp. (Lyreidinae), Cenocorystes bretoni n. sp. (Palaeocorystidae), Cenomanocarcinus cantabricus n. sp. (Cenomanocarcinidae) , Eosymethis aragonensis n. gen., n. sp. (Symethinae), Eucorystes iserbyti n. sp., Eucorystes navarrensis n. sp. (both Palaeocorystidae), Ferroranina tamilnadu n. gen., n. sp. (Palaeocorystidae), Joeranina gaspari n. gen., n. sp. (Palaeocorystidae), Marylyreidus n. gen. (Marylyreidinae n. subfam.), Paranecrocarcinus balla n. sp. (Paranecrocarcininae), Symethoides monmouthorum n. gen., n. sp. (Symethinae) and Vegaranina n. gen. (Ranininae). Several raninoid and palaeocorystoid genera are revised, and emended diagnoses given. Copyright © 2012 · Magnolia Press.


Van Bakel B.W.M.,Oertijdmuseum De Groene Poort | Van Bakel B.W.M.,Naturalis Biodiversity Center
Zootaxa | Year: 2013

A new palaeocorystid crab, Joeranina houssineaui n. sp., is described from upper Cenomanian strata in southwest France. Being apparently derived from J. broderipii, the new species inhabited a sandier substrate environment than its predeces-sor. The incomplete holotype reveals portions of the internal pleurites, which are rarely seen in extinct crabs. Copyright © 2013 Magnolia Press.

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