Jun A. Ebersole
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View article: Extinction threatens to cause morphological and ecological homogenization in sharks
Extinction threatens to cause morphological and ecological homogenization in sharks Open
Global shark biodiversity is in decline, with numerous species facing extinction because of anthropogenic influence. Loss of species richness is expected to diminish trait diversity, encompassing ecological roles and physiological adaptati…
View article: Late Oligocene fishes (Chondrichthyes and Osteichthyes) from the Catahoula Formation in Wayne County, Mississippi, USA
Late Oligocene fishes (Chondrichthyes and Osteichthyes) from the Catahoula Formation in Wayne County, Mississippi, USA Open
Isolated elasmobranch and teleost teeth, jaws, otoliths, scales, vertebrae, and fin spines were recovered from the upper Oligocene (Chattian) Catahoula Formation in Wayne County, Mississippi, USA. A total of 13 551 specimens were examined …
View article: A new species of Palaeohypotodus Glückman, 1964 (Chondrichthyes, Lamniformes) from the lower Paleocene (Danian) Porters Creek Formation, Wilcox County, Alabama, USA
A new species of Palaeohypotodus Glückman, 1964 (Chondrichthyes, Lamniformes) from the lower Paleocene (Danian) Porters Creek Formation, Wilcox County, Alabama, USA Open
The historic collection of the Geological Survey of Alabama includes several fossil shark specimens that were recovered from the lower Paleocene Porters Creek Formation in southwestern Alabama, USA. Among these specimens are 17 teeth that …
View article: A new species of Palaeohypotodus Glückman, 1964 (Chondrichthyes, Lamniformes) from the lower Paleocene (Danian) Porters Creek Formation, Wilcox County, Alabama, USA
A new species of Palaeohypotodus Glückman, 1964 (Chondrichthyes, Lamniformes) from the lower Paleocene (Danian) Porters Creek Formation, Wilcox County, Alabama, USA Open
The historic collection of the Geological Survey of Alabama includes several fossil shark specimens that were recovered from the lower Paleocene Porters Creek Formation in southwestern Alabama, USA. Among these specimens are 17 teeth that …
View article: Two new plioplatecarpine mosasaurs (Mosasauridae; Plioplatecarpinae) of the genus <i>Ectenosaurus</i> from the Upper Cretaceous of North America
Two new plioplatecarpine mosasaurs (Mosasauridae; Plioplatecarpinae) of the genus <i>Ectenosaurus</i> from the Upper Cretaceous of North America Open
Kiernan, Caitlin R., Ebersole, Jun A. (2023): Two new plioplatecarpine mosasaurs (Mosasauridae; Plioplatecarpinae) of the genus Ectenosaurus from the Upper Cretaceous of North America. PaleoBios 40 (13): 1-28, DOI: 10.5070/P9401362375, URL…
View article: Observations on heterodonty within the dentition of the Atlantic Sharpnose Shark, <i>Rhizoprionodon terraenovae</i> (Richardson, 1836), from the north-central Gulf of Mexico, USA, with implications on the fossil record
Observations on heterodonty within the dentition of the Atlantic Sharpnose Shark, <i>Rhizoprionodon terraenovae</i> (Richardson, 1836), from the north-central Gulf of Mexico, USA, with implications on the fossil record Open
The Atlantic Sharpnose Shark, Rhizoprionodon terraenovae (Richardson, 1836), is the most common small coastal requiem shark in the north-central Gulf of Mexico, USA. Despite this fact, little is known about the dental variation within this…
View article: Early Oligocene (Rupelian) fishes (Chondrichthyes, Osteichthyes) from the Ashley Formation (Cooper Group) of South Carolina, USA
Early Oligocene (Rupelian) fishes (Chondrichthyes, Osteichthyes) from the Ashley Formation (Cooper Group) of South Carolina, USA Open
Cicimurri, David J., Knight, James L., Ebersole, Jun A. (2022): Early Oligocene (Rupelian) fishes (Chondrichthyes, Osteichthyes) from the Ashley Formation (Cooper Group) of South Carolina, USA. PaleoBios 39 (1): 1-38, DOI: 10.5070/P9390569…
View article: MARINE FISHES (CHONDRICHTHYES, HOLOCEPHALI, ACTINOPTERYGII) FROM THE UPPER CRETACEOUS (CAMPANIAN) RYBUSHKA FORMATION NEAR BELOE OZERO, SARATOV OBLAST, RUSSIA
MARINE FISHES (CHONDRICHTHYES, HOLOCEPHALI, ACTINOPTERYGII) FROM THE UPPER CRETACEOUS (CAMPANIAN) RYBUSHKA FORMATION NEAR BELOE OZERO, SARATOV OBLAST, RUSSIA Open
A diverse fish paleofauna occurs in the upper Campanian portion of the Rybushka Formation exposed near Saratov city in the Saratov Oblast, Russia. Twenty taxa have been identified, including two holocephalans (Ischyodus bifurcatus and Amyl…
View article: Marine fishes (Elasmobranchii, Teleostei) from the Glendon Limestone Member of the Byram Formation (Oligocene, Rupelian) at site AWa-9, Washington County, Alabama, USA, including a new species of gobiid (Gobiiformes: Gobiidae)
Marine fishes (Elasmobranchii, Teleostei) from the Glendon Limestone Member of the Byram Formation (Oligocene, Rupelian) at site AWa-9, Washington County, Alabama, USA, including a new species of gobiid (Gobiiformes: Gobiidae) Open
The Oligocene (Rupelian) Byram Formation (Vicksburg Group) in Alabama, USA, is divided into three members, including (in ascending order) the Glendon Limestone, unnamed marl, and the Bucatunna Clay. The Oligocene marine units in Alabama ha…
View article: First description of the fossil otolith-based sciaenid, <em>Equetulus silverdalensis</em> n. comb., in the Gulf Coastal Plain, USA, with comments on the enigmatic distribution of the species
First description of the fossil otolith-based sciaenid, <em>Equetulus silverdalensis</em> n. comb., in the Gulf Coastal Plain, USA, with comments on the enigmatic distribution of the species Open
The fossil otolith-based sciaenid genus Equetulus is known almost exclusively from South America, the Caribbean, and Central America, with the various species ranging in age from the late Oligocene to late Miocene. The only exception to th…
View article: Two new species of &lt;i&gt;Mennerotodus&lt;/i&gt; Zhelezko, 1994 (Chondrichthyes: Lamniformes: Odontaspididae), from the Paleogene of the southeastern United States
Two new species of <i>Mennerotodus</i> Zhelezko, 1994 (Chondrichthyes: Lamniformes: Odontaspididae), from the Paleogene of the southeastern United States Open
Mennerotodus Zhelezko, 1994, is an extinct lamniform shark known to occur in Paleogene strata of the Tethyan region of Asia and Europe. Although only a single species has been named, multiple subspecies have been erected and used as biostr…
View article: Jefitchia claybornensis - Frizzell & Dante 1965
Jefitchia claybornensis - Frizzell & Dante 1965 Open
Jefitchia claybornensis Frizzell & Dante, 1965 Fig. 72 A–D Otolithus (Sciaenidarum) claybornensis Koken, 1888: 283, pl. 19, figs 1, 4. Otolithus (Sciaenidarum) similis – Koken 1888: 284, pl. 19, figs 10–11. Jefitchia claybornensis – Frizze…
View article: Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths
Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths Open
The Tallahatta Formation, Lisbon Formation, and Gosport Sand are the three lithostratigraphic units that make up the lower-to-middle Eocene Claiborne Group. In Alabama, these marine units are among the most fossiliferous in the state and a…
View article: Lepophidium Gill 1895
Lepophidium Gill 1895 Open
Lepophidium? mucronata (Koken, 1888) Fig. 70 M–N Otolithus (Gadidarum) mucronatus Koken, 1888: 290, 292, pl. 17, figs 10–11. Otolithus (Gadidarum) mucronatus – Posthumus 1924: 13. Bauzaia mucronata – Frizzell & Dante 1965: 712–713, pl. 86,…
View article: Carcharhinus mancinae Ebersole & Cicimurri & Stringer 2019, sp. nov.
Carcharhinus mancinae Ebersole & Cicimurri & Stringer 2019, sp. nov. Open
Carcharhinus mancinae sp. nov. urn:lsid:zoobank.org:act: C940D627-E666-474A-8383-B6B9F5A4D01E Figs 25–26 Galeocerdo alabamensis – Thurmond & Jones 1981: 63, fig. 28, left. Galeocerdo latidens – Manning 2003: 374, fig. 21.3.2. Etymology The…
View article: <i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies
<i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies Open
Resolving the phylogeny of sea turtles is uniquely challenging given the high potential for the unification of convergent lineages due to systematic homoplasy. Equivocal reconstructions of marine turtle evolution subsequently inhibit effor…
View article: Character-taxon matrix in NEXUS file format from <i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies
Character-taxon matrix in NEXUS file format from <i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies Open
Character-taxon matrix used in both the parsimony and Bayesian analyses.
View article: Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths
Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths Open
This dataset contains the digitized treatments in Plazi based on the original journal article Ebersole, Jun A., Cicimurri, David J., Stringer, Gary L. (2019): Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthye…
View article: Character-taxon matrix in NEXUS file format from <i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies.
Character-taxon matrix in NEXUS file format from <i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies. Open
Character-taxon matrix used in both the parsimony and Bayesian analyses.
View article: Character-taxon matrix in NEXUS file format from <i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies
Character-taxon matrix in NEXUS file format from <i>Asmodochelys parhami</i>, a new fossil marine turtle from the Campanian Demopolis Chalk and the stratigraphic congruence of competing marine turtle phylogenies Open
Character-taxon matrix used in both the parsimony and Bayesian analyses.
View article: New occurrences of Belonostomus (Teleostomorpha: Aspidorhynchidae) from the Late Cretaceous of the North American Gulf Coastal Plain, USA
New occurrences of Belonostomus (Teleostomorpha: Aspidorhynchidae) from the Late Cretaceous of the North American Gulf Coastal Plain, USA Open
Van Vranken, Nathan E., Fielitz, Christopher, Ebersole, Jun A. (2019): New occurrences of Belonostomus (Teleostomorpha: Aspidorhynchidae) from the Late Cretaceous of the North American Gulf Coastal Plain, USA. Palaeontologia Electronica 22…
View article: A new species of Peritresius Leidy, 1856 (Testudines: Pan-Cheloniidae) from the Late Cretaceous (Campanian) of Alabama, USA, and the occurrence of the genus within the Mississippi Embayment of North America
A new species of Peritresius Leidy, 1856 (Testudines: Pan-Cheloniidae) from the Late Cretaceous (Campanian) of Alabama, USA, and the occurrence of the genus within the Mississippi Embayment of North America Open
Late Cretaceous members of Peritresius belong to a diverse clade of marine adapted turtles currently thought to be some of the earliest representatives of the lineage leading to modern hard-shelled sea turtles (Pan-Cheloniidae). Prior stud…
View article: The first report of <em>Toxochelys latiremis</em> Cope, 1873 (Testudines: Panchelonioidea) from the early Campanian of Alabama, USA
The first report of <em>Toxochelys latiremis</em> Cope, 1873 (Testudines: Panchelonioidea) from the early Campanian of Alabama, USA Open
Toxochelys latiremis Cope, 1873 is currently thought to be one of the oldest members of the clade originating from the last common ancestor of all extant species of marine-adapted turtles (Chelonioidea). Fossil material of this species has…
View article: A new species of<i>Cretalamna sensu stricto</i>(Lamniformes, Otodontidae) from the Late Cretaceous (Santonian-Campanian) of Alabama, USA
A new species of<i>Cretalamna sensu stricto</i>(Lamniformes, Otodontidae) from the Late Cretaceous (Santonian-Campanian) of Alabama, USA Open
Decades of collecting from exposures of the Upper Cretaceous Tombigbee Sand Member of the Eutaw Formation and Mooreville Chalk in Alabama, USA has produced large numbers of isolated Cretalamna ( sensu stricto ) teeth. Many of these teeth h…
View article: The occurrence of early Pleistocene marine fish remains from the Gulf Coast of Mobile County, Alabama, USA
The occurrence of early Pleistocene marine fish remains from the Gulf Coast of Mobile County, Alabama, USA Open
We examined 91 specimens recovered as beach wash on the shores of Dauphin Island and the nearby Sand/ Pelican Island Complex located in the northern Gulf of Mexico in Mobile County, Alabama, USA. A total of 12 unequivocal taxa were identif…
View article: Anatomy and osteohistology of the basal hadrosaurid dinosaur<i>Eotrachodon</i>from the uppermost Santonian (Cretaceous) of southern Appalachia
Anatomy and osteohistology of the basal hadrosaurid dinosaur<i>Eotrachodon</i>from the uppermost Santonian (Cretaceous) of southern Appalachia Open
The cranial and postcranial anatomy of the basal hadrosaurid dinosaur Eotrachodon orientalis , from the uppermost Santonian of southern Appalachia (southeastern U.S.A.), is described in detail. This animal is the only known pre-Campanian n…
View article: Late Pleistocene fishes of the Tennessee River Basin: an analysis of a late Pleistocene freshwater fish fauna from Bell Cave (site ACb-2) in Colbert County, Alabama, USA
Late Pleistocene fishes of the Tennessee River Basin: an analysis of a late Pleistocene freshwater fish fauna from Bell Cave (site ACb-2) in Colbert County, Alabama, USA Open
The Tennessee River Basin is considered one of the most important regions for freshwater biodiversity anywhere on the globe. The Tennessee River Basin currently includes populations of at least half of the described contemporary diversity …
View article: A primitive hadrosaurid from southeastern North America and the origin and early evolution of ‘duck-billed’ dinosaurs
A primitive hadrosaurid from southeastern North America and the origin and early evolution of ‘duck-billed’ dinosaurs Open
Eotrachodon orientalis gen. et sp. nov. (latest Santonian of Alabama, southeastern U.S.A.) is one of the oldest and most basal hadrosaurid dinosaurs and the only hadrosaurid from Appalachia (present day eastern North America) with a preser…
View article: Paleocene chimaeroid fishes (Chondrichthyes: Holocephali) from the eastern United States, including two new species of <em>Callorhinchus</em>
Paleocene chimaeroid fishes (Chondrichthyes: Holocephali) from the eastern United States, including two new species of <em>Callorhinchus</em> Open
Isolated tooth plates collected from Paleocene deposits of Alabama, Arkansas, Illinois, Maryland, Mississippi, New Jersey, South Carolina, Texas, and Virginia represent four genera of chimaeroid fishes. Callorhinchus is reported in the fos…