A new approach to the systematics of Laeviprosopon (Brachyura: Homolidae), with remarks on molting process of the early brachyurans

Our understanding of the molting process in the Jurassic brachyurans is very scarce because useful material is rare. New specimens from Poland and Germany, in addition to previously known specimens, let us further investigate the molting process. Specimens of Laeviprosopon laeve reveal characters not known before. On the dorsal carapace, molting lines are confirmed in three species of Laeviprosopon : the type species L. laeve , L. laculatum and L. fraasi . This brought questions about the systematic position of Laeviprosopon , which we here reassign to Homolidae within Homoloidea. Furthermore, two specimens ascribed previously to L. sublaeve are transferred to L. fraasi

[1]  J. Jagt,et al.  A new, highly diverse paguroid assemblage from the Oxfordian (Upper Jurassic) of southern Poland and its environmental distribution , 2022, Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen.

[2]  G. Schweigert,et al.  Systematics and convergent evolution of multiple reef-associated Jurassic and Cretaceous crabs (Decapoda, Brachyura) , 2020 .

[3]  Natalia Starzyk.  The oldest species of the genusLaeviprosopon (Decapoda: Brachyura: Prosopidae) from the Oxfordian of Poland , 2020 .

[4]  D. Guinot.  New hypotheses concerning the earliest brachyurans (Crustacea, Decapoda, Brachyura) , 2019, Geodiversitas.

[5]  Z. Vasícek,et al.  Current knowledge of ammonite assemblages from the Štramberk Limestone (Tithonian–lower Berriasian) at Kotouč Quarry, Outer Western Carpathians (Czech Republic) , 2018, Cretaceous Research.

[6]  A. Alcock.  Materials for a Carcinological Fauna of India: No; 6; The Brachyura Catometopa or Grapsoidea , 2018 .

[7]  Natalia Starzyk.  Three new species of the genus Tanidromites (Decapoda: Brachyura: Tanidromitidae) from the Late Jurassic (Oxfordian) of Poland , 2016 .

[8]  D. Felder,et al.  Possible shell disease in 100 million-year-old crabs. , 2016, Diseases of aquatic organisms.

[9]  J. Jagt,et al.  Allometric ontogenetic changes in two Late Jurassic gastrodorid hermit crabs (Crustacea, Decapoda, Anomura) from central Europe , 2016 .

[10]  A. Garassino.  A new homolid crab, Peedeehomola deanbogani n. gen., n. sp., from the Peedee Formation (late Maastrichtian), Rocky Point Member, North Carolina, USA , 2016 .

[11]  Natalia Starzyk.  Reappraisal of the primitive crab Eodromites, with description of three new species from European localities (Decapoda: Brachyura: Goniodromitidae) , 2015 .

[12]  Ovidiu D. Franţescu.  Fossil decapods from the Cretaceous (late Albian) of Tarrant County, Texas , 2014 .

[13]  Natalia Starzyk.  Jurassic crabs: new characters of carapace diagnostic to known tanidromitid species , 2013 .

[14]  F. Vega,et al.  A new homolid crab, Zygastrocarcinus carolinasensis n. sp., from the Cretaceous (Campanian) of NE Mexico: implications for paleobiogeography , 2013 .

[15]  A. Klompmaker.  Extreme diversity of decapod crustaceans from the mid-Cretaceous (late Albian) of Spain: Implications for Cretaceous decapod paleoecology , 2013 .

[16]  M. Harzhauser,et al.  Ernstbrunn Limestone and Klentnice beds (Kimmeridgian-Berriasian; Waschberg-Ždánice Unit; NE Austria and SE Czech Republic): state of the art and bibliography , 2012 .

[17]  J. Jagt,et al.  The sixth abdominal tergites of paguroid anomurans – a newly recognized crustacean macrofossil type , 2012 .

[18]  J. Jagt,et al.  The Earliest Record of Pylochelid Hermit Crabs from the Late Jurassic of Southern Poland, with Notes on Paguroid Carapace Terminology , 2012 .

[19]  R. Feldmann,et al.  A Hotspot for Cretaceous Goniodromitids (Decapoda: Brachyura) from Reef Associated Strata in Spain , 2012 .

[20]  J. Jagt,et al.  New Albian-Cenomanian crabs (Crustacea, Decapoda, Podotremata) from Monte Orobe, Navarra, northern Spain , 2012 .

[21]  J. Jagt,et al.  New Late Jurassic Symmetrical Hermit Crabs from the Southern Polish Uplands and Early Paguroid Diversification , 2012 .

[22]  E. Głowniak.  The perisphinctid genus Prososphinctes Schindewolf (Ammonoidea, subfamily Prososphinctinae nov.): an indicator of palaeoecological changes in the Early Oxfordian Submediterranean sea of southern Poland , 2012 .

[23]  Natalia Starzyk,et al.  A new crab species from the Oxfordian of Poland (Decapoda: Brachyura: Goniodromitidae) , 2012 .

[24]  Carl von Linné.  Systema Naturae: Per Regna Tria Naturae, Secundum Classes, Ordines, Genera, Species, Cum Characteribus, Differentiis, Synonymis, Locis, , 2011 .

[25]  A. Klompmaker,et al.  The Cretaceous crab Rathbunopon : revision, a new species and new localities , 2011 .

[26]  W. Krzemiński,et al.  Intraspecific variation in the Jurassic crab Bucculentum bucculentum (Decapoda: Homolodromioidea: Bucculentidae) , 2011 .

[27]  R. Feldmann,et al.  Revision of Some Fossil Podotrematous Brachyura (Homolodromiidae; Longodromitidae; Torynommidae) , 2011 .

[28]  Ovidiu D. Franţescu.  Brachyuran decapods (including five new species and one new genus) from Jurassic (Oxfordian-Kimmeridgian) coral reef limestones from Dobrogea, Romania , 2011 .

[29]  A. Alcock.  Materials for a Carcinological Fauna of India , 2010 .

[30]  C. Crônier,et al.  A new decapod crustacean faunule from the Middle Jurassic of north‐west France , 2009 .

[31]  R. Feldmann,et al.  Revision of Jurassic Homoloidea De Haan, 1839, from the Ernstbrunn and Stramberk Limestones, Austria and the Czech Republic , 2009 .

[32]  R. Feldmann,et al.  Revision of the Genus Laeviprosopon Glaessner, 1933 (Decapoda: Brachyura: Homolodromioidea: Prosopidae) Including Two New Species , 2008 .

[33]  R. Crawford.  A New Species of Fossil Homolid Crab (Decapoda: Brachyura) from the Río Foyel Formation (Paleogene), Río Negro Province, Argentina , 2008, Journal of Paleontology.

[34]  R. Leinfelder,et al.  The origin of Jurassic reefs: Current research developments and results , 1994 .

[35]  R. Feldmann,et al.  Late Cretaceous and Paleocene Decapod Crustaceans from James Ross Basin, Antarctic Peninsula , 1993, Journal of Paleontology.

[36]  G. A. Bishop,et al.  Homolopsis pikeae, new species (Decapoda), a crab from the Cretaceous of Texas. , 1992 .

[37]  R. Feldmann,et al.  Ultrastructure in cuticle from Hoploparia stokesi (Decapoda: Nephropidae) from the Lopez de Bertodano Formation (Late Cretaceous–Paleocene) of Seymour Island, Antarctica , 1987, Journal of Paleontology.

[38]  G. A. Bishop.  A new crab, Zygastrocarcinus cardsmithi (Crustacea, Decapoda), from the lower Pierre Shale, southeastern Montana , 1986, Journal of Paleontology.

[39]  K. Beurlen.  Die fossilen Dromiaceen und ihre Stammesgeschichte , 1928 .

[40]  Stanley Kemp.  Crustacea Decapoda , 1913, Records of the Zoological Survey of India.

[41]  H. Woodward.  II.—On a new Brachyurous Crustacean (Prosopon mammillatum), from the Great Oolite, Stonesfield , 1868, Geological Magazine.

[42]  A. Garassino,et al.  New Occurrences of Fossil Homolidae from the Eastern Pacific , 2017 .

[43]  B. Kołodziej,et al.  Microencruster-microbial framework and synsedimentary cements in the Štramberk Limestone (Carpathians, Czech Republic): Insights into reef zonation , 2017 .

[44]  R. Ross,et al.  (CRUSTACEA: DECAPODA: BRACHYURA) FROM THE PACIFIC NORTHWEST OF NORTH AMERICA AND A REASSESSMENT OF THEIR FOSSIL RECORDS , 2015 .

[45]  Natalia Starzyk.  New species of the genus Tanidromites (Decapoda: Brachyura: Tanidromitidae) from the Oxfordian of Poland , 2015 .

[46]  R. Feldmann,et al.  New and Previously Known Decapod Crustaceans from the Late Cretaceous of New Jersey and Delaware, USA , 2013 .

[47]  R. Feldmann,et al.  Revision of the Prosopinae sensu Glaessner, 1969 (Crustacea: Decapoda: Brachyura) Including Four New Families, Four New Genera, and Five New Species , 2009 .

[48]  Peter K. L. Ng,et al.  Systema Brachyurorum: Part 1. An Annotated checklist of extant brachyuran crabs of the world , 2008 .

[49]  P. Ng,et al.  New records and new species of Homolidae De Haan, 1839, from the Philippines and French Polynesia (Crustacea : Decapoda : Brachyura) , 2007 .

[50]  H. Karasawa,et al.  A new member of the Family Prosopidae (Crustacea: Decapoda: Brachyura) from the Lower Cretaceous of Japan , 2006 .

[51]  A. Garassino,et al.  Galicia marianae n. gen., n. sp. (Crustacea, Decapoda, Astacidea) from the Oxfordian (Upper Jurassic) of the Southern Polish Uplands , 2003 .

[52]  M. Krobicki,et al.  Jurassic and Cretaceous primitive crabs of the family Prosopidae (Decapoda: Brachyura) - their taxonomy, ecology and biogeography , 2000 .

[53]  R. Feldmann,et al.  Cuticular ultrastructure of fossil and living homolodromiid crabs [Decapoda: Brachyura] , 1998 .

[54]  R. Leinfelder,et al.  Paleoecology, Growth Parameters and Dynamics of Coral, Sponge and Microbolite Reefs from the Late Jurassic , 1996 .

[55]  B. R. D. Forges,et al.  Crustacea Decapoda Brachyura: Révision de la famille des Homolidae de Haan, 1839 , 1995 .

[56]  A. Wierzbowski,et al.  Crabs from the Oxfordian sponge megafacies of Poland , 1985 .

[57]  R. Förster.  Frühe Anomuren und Brachyuren (Decapoda, Crustacea) aus dem mittleren Dogger , 1985 .

[58]  V. V. Straelen.  Crustacés décapodes nouveaux ou peu connus de l'époque crétacique , 1936 .

[59]  V. V. Straelen.  Contribution à l'étude des crustacés décapodes de la période jurassique , 1925 .

[60]  A. Alcock.  Materials for a Carcinological Fauna of India. No. 5. Brachyura Primigenia or Dromiacea , 1900 .

[61]  H. G. Bronn,et al.  Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefaktenkunde. , 1830 .

[62]  G. L. Buffon,et al.  Histoire naturelle, générale et particulière des crustacés et des insectes : , 1802 .