{"title":"Possible sexual dimorphism in <i>Pankowskichthys libanicus</i> (Neopterygii, Pycnodontiformes) from the Cenomanian of Lebanon.","authors":"John J Cawley, Jürgen Kriwet","doi":"10.14456/randk.2017.8","DOIUrl":"https://doi.org/10.14456/randk.2017.8","url":null,"abstract":"<p><p>Sexual dimorphism is a commonly observed phenomenon in the natural world today but it is far more difficult to determine how common it was in extinct taxa. Here, we describe a new specimen of <i>Pankowskichthys libanicus</i> (Pycnodontiformes, Gladiopycnodontidae) from Haqel, Lebanon (MNHN HAK 1950), which has distinct morphological differences from the holotype of this taxon (IRSNB P9278) which occurs in Hjoula, Lebanon but has also been found at Haqel. Since most of the cranial and pectoral girdle morphologies as well as other postcranial characters are similar to that seen in IRSNB P9278, the distinctive characters seen in MNHN HAK 1950 are unlikely to define a second species but rather represent sexual dimorphic traits.</p>","PeriodicalId":33331,"journal":{"name":"Research Knowledge","volume":"3 1","pages":"33-35"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6276997/pdf/emss-75837.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36754817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"New information about late cretaceous pycnodont fishes (Actinoptergyii, Pycnodontiformes) from the near east.","authors":"J. Cawley, J. Kriwet","doi":"10.14456/randk.2017.12","DOIUrl":"https://doi.org/10.14456/randk.2017.12","url":null,"abstract":"Over roughly the last decade, the Lebanese Cenomanian localities have revealed high numbers of newly discovered pycnodont taxa and even two new families of pycnodonts. Here, two new taxa of pycnodont fishes from the Near East are presented, one from Lebanon and the other from Israel. The new Lebanese specimens show us that Lebanon is still a major site for discovering new pycnodont taxa and can give major insights into their evolution and possible life history. Conversely, the new taxon from Israel shows that lesser known fossiliferous sites may tell us more about the true state of diversity of pycnodonts in the Late Cretaceous.","PeriodicalId":33331,"journal":{"name":"Research Knowledge","volume":"3 1 1","pages":"47-48"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66676819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}