Oogenus: Placoolithus ZHAO & ZHAO, 1998
Etymology: Greek, place, "plate" and Greek, oo, "egg" and Greek, lithus, "rock or stone."
= Paradendroolithus ZHOU, REN, XU & GUAN, 1998
Etymology:

Oospecies: taohensis ZHAO & ZHAO, 1998
Etymology: taohe, Xichuan, China; in reference to the locality where the specimens were collected.

Holotype: IVPP V11569.1; Field no. 7530.

Locality: Majacun, Taho, Xichuan, China.

Horizon: Majiacum Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material: A nest with 9 eggs.

Referred material:

IVPP V11569.2; Field no. 7530: A nest with 5 eggs more or less compressed.

IVPP V11569.3-5; Field no. 7530: 2 eggs and 84 eggshell fragments.

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Oospecies: tumiaolingensis (ZHANG, YANG, LI& HU, 2018) ZHANG, YANG, LI & HU, 2018
Etymology: In reference to Tumiaoling Hill, Yunxian County, Hubei Province, China; its type locality.
= Dendroolithus tumiaolingensis ZHOU, REN, XU & GUAN, 1998

Holotype: HYH 111

Locality: Tumiaoling Hill, Hejiagou Village, Qinglongshan Region, Yunxian County, Hubei Province, China.

Horizon: Gaogou Formation,

Biostratigraphy:

Age: Late Cretaceous.

Material: A nearly complete egg.

Paratype:

HYH 1331-1337: A complete egg and a clutch with six eggs.

Referred material:

ZHANG, YANG, LI & HU, 2018

TML 4: 77 eggs.

TML 7: 15 eggs and one egg impression, almost forming a circle.

TML 8: 20 eggs in a clutch.

TML 9: 13 eggs, with three or four eggs formed in a cluth.

TML 10: 18 eggs with two egg impressin.

TML 14: 30 eggs in a relatively large cluth.

= Dendroolithus hongzhaiziensis ZHOU, REN, XU & GUAN, 1998
Etymology:

Holotype: HOZ 11

Locality: Hongzhaizi Hill, Qinglongshan Region, Yunxian County, Hubei Province, China.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: Eggs and eggshells.

= Paradendroolithus ginglongshanensis ZHOU, REN, XU & GUAN, 1998
Etymology: In reference to the Qinglongshan Hill, where it was discovered.

Holotype: HYQB 811-813

Locality: Qinglongshan Hill, Qinglongshan Region, Yunxian County, Hubei Province, China.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: 3 incomplete eggs in a cluth.