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Subtiliolithus hyogoensis

Reptilia - Laevisoolithidae

Taxonomy
Subtiliolithus hyogoensis was named by Tanaka et al. (2020). Its type specimen is MNHAH D1-040096, an egg, and it is a 3D body fossil. Its type locality is Kamitaki Bonebed Quarry, Tamba City, which is in an Albian floodplain mudstone in the Ohyamashimo Formation of Japan.

Synonymy list
YearName and author
2020Subtiliolithus hyogoensis Tanaka et al. p. 4–5
2021Subtiliolithus hyogoensis Oser et al. p. 7

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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()
—Theropoda()
familyLaevisoolithidae
genusSubtiliolithus
specieshyogoensis

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.

†Subtiliolithus hyogoensis Tanaka et al. 2020
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Diagnosis
ReferenceDiagnosis
K. Tanaka et al. 2020Subtiliolithus hyogoensis differs from all other ootaxa in the following unique combination of traits: outer surface ornamentation consists of packed, isolated or coalesced nodes; eggshell consisting of a mammillary layer and a continuous layer delimited by a gradual boundary; mammillary layer-to-continuous layer thickness ratio of 1:0.9–1:1.3; tightly packed mammillae (mean 80 mm in diameter); blocky crystals with tabular ultrastructure in the mammillary layer.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: solitaryo
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:08
Modified: 2004-12-14 14:50:08
Source: o = order
Reference: Marsh 1875

Age range: Early/Lower Albian or 112.03000 to 109.00000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Albian112.03 - 109.0Japan (Hyogo) Dinosauria indet. (type locality: 117980) Subtiliolithus hyogoensis (224255)