Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Chaoceratodus portezuelensis

Dipnoi - Ceratodontidae

Taxonomy
Chaoceratodus portezuelensis was named by Apesteguia et al. (2007). Its type specimen is MCF-PVPH-373, a tooth (left upper tooth plate), and it is a 3D body fossil. Its type locality is Sierra del Portezuelo (non-specified), which is in a Turonian/Coniacian terrestrial horizon in the Portezuelo Formation of Argentina. It is the type species of Chaoceratodus.

Synonymy list
YearName and author
2007Chaoceratodus portezuelensis Apesteguia et al.
2023Chaoceratodus portezuelensis Panzeri p. 147

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
RankNameAuthor
—Osteichthyes()
subclassSarcopterygii()
orderDipnoi(Müller 1884)
familyCeratodontidaeGill 1872
genusChaoceratodus
speciesportezuelensis

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Chaoceratodus portezuelensis Apesteguia et al. 2007
show all | hide all
Diagnosis
ReferenceDiagnosis
S. Apesteguia et al. 2007The tooth plate is subtriangular, with four robust and short ridge crests. Clefts
between the ridges are wide and shallow. The labial profile of the crests is not steep and ends in a single last crest. The first crest is long and broad, without a marked slope. The crests are relatively straight and radiating. The fourth crest is very large when compared with the second and the third. Occlusal pits are nearly absent on the occlusal surface. There are large tubercles in the labial edge ofthe crests except in the first where the tubercle is located toward the central región.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilec
Created: 2009-07-20 21:50:54
Modified: 2009-07-20 23:50:54
Source: c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009

Age range: base of the Late/Upper Turonian to the top of the Early/Lower Coniacian or 93.50000 to 85.80000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Turonian - Early/Lower Coniacian93.5 - 85.8Argentina (Neuquén) Chaoceratodus portezuelensis (type locality: 75050)