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Fusioolithus berthei

Reptilia - Fusioolithidae

Taxonomy
Fusioolithus berthei was named by Fernández and Khosla (2015). It is considered to be a form taxon. Its type specimen is MML-PH 1269, an egg, and it is a 3D body fossil. Its type locality is Santos II (egg level 3), which is in a Campanian/Maastrichtian terrestrial sandstone/mudstone in the Allen Formation of Argentina.

Synonymy list
YearName and author
2015Fusioolithus berthei Fernández and Khosla p. 170
2016Fusioolithus berthei Fernández p. 93

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
RankNameAuthor
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
familyFusioolithidae
genusFusioolithus
speciesberthei

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.

†Fusioolithus berthei Fernández and Khosla 2015
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Diagnosis
ReferenceDiagnosis
M. S. Fernández and A. Khosla 2015These eggshells have a thickness ranging from 2.45 to 2.9 mm (Figure 5(c),(d)); compactituberculate ornamentation (subcircular nodes) (Figure 5(a));average node diameter about 0.66 mm with diameter ranging from 0.3 to 0.7 mm; fan-shaped units have variable width and shape; lateral margins of spheroliths are conical and non-parallel, and the eggshell units are partially fused (Figure 5(c),(d)). This is the most important difference between M. jabalpurensis, which have sharp eggshell units as its oofamily materials. The upper and external parts of the units have a big wide difference with the inner parts.The average height/width ratio is 3.27:1; growth lines moderately arched upwards and follow the contour of the external profile; pore circular to elongate in shape; tubocanaliculate pore system (pore canals subvertical and inclined); subcircular basal caps 0.1–0.5 mm in diameter.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988

Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian - Early/Lower Maastrichtian83.6 - 66.0Argentina (Río Negro) Faveoloolithidae indet. (type locality: 96094) Megaloolithidae indet. (96099)