Gen. sp indet.

Protoceratopsid egg shells.

MIKHALOV, 1991/MIKHAILOV, SABATH, KURZANOV, 1994

P1

Locality: Bayn-Dzak, Toogreekiyn-Shrih (Djadokhta Formation), Khermiyn-Tsav (biostragratigrpahic equivalent of the Barun Goyot Formation), Ikh-Shunkht (?Barun Goyot Formation), Gobi Desert, Mongolia.

Horizon: Late Cretaceous.

Material:

PIN 614-(58,601,603), 3142-(415, 429, 447-453, 455, 489, 495, 496), 3142-(121, 122, 123), 4228-1, GI and ZPAL material: 4 whole clutches, abundant eggs, parts of eggs and shell fragments from 6 localities.

PIN uncatalogued, ZPAL MgOv-II/2, 2a, 3a, 3b, ?some clutches in Ulan Bator, numerous eggs with eggshell debris PIN 614-601, 603, ZPAL MgOv-II.20, 21.

P2

Localities and horizons: Bayn-Dzak, (Djadokhta Formation), Khermiyn-Tsav (red beds; biostratigraphic equivalent of the Barun Goyot Formation) and Khulsan (Barun Goyot Formation), Mongolia.

Material:

PIN 3142-496: 19 eggs.

ZPAL MgOv-11/23: 19 eggs.

MgOv-II/4, 5, 8, 10, 22: ca 20 eggs.

MgOv-II/1a-f: 7 eggs.

PIN 3142-415, 429, 447-453, 489, 495, ZPAL MgOv-1/5, 7-10, 12-15, 17, 20, 23, 24, 26, 27, MgOv-III/1-8, 19: Numerous whole eggs and their parts.

Note: May belong to Breviceratops kozlovskii.

P3

Localities and horizon: Toogreekiyn-Shireh, Baga-Tariach (Djakokhta Formation), Khermiyn-Tsav (Biostratigraphic equivalent of the Barun Goyot Formation) and Khulsan (Barun Goyot Formation).

Material:

PIN 4228-1: Part of a clutch, 4 eggs.

PIN 3143-121, 122, 123, ZPAL MgOv-I/1, 10, 25, MbOv-III/9: Incomplete eggs and their polar parts.

Clutches from Ulan Bator.

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Larger smooth-shelled protoceratopsid eggs

SABATH, 1991

Locality: Bayan Zag Main Field, (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation, "upper egg-bearing horizon".

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-II./2a, 2b: A nest, 8 eggs embedded in the sandstone and 7 loose egg fragments.

Locality: Bayan Zag, Dashzeveg Sayr, (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation, "upper egg-bearing horizon".

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-II./3a, 3b: A nest, 6 eggs in one block of sandstone and half of an egg.

 

 

Locality: Bayan Zag (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation, "upper egg-bearing horizon".

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-II./20, 21: Several egg fragments and shell debris.

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Smaller smooth-shelled ?protoceratopsid eggs

SABATH, 1991

Locality: Altan Ula IV, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-I/1: 1 incomplete egg embedded in sandstone, with imprints of broken eggshell in 2 pieces.

Locality: Khulsan, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Barun Goyot Formation.

Biostratigraphy:

Age: Middle –Late Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous..

Material:

ZPAL MgOv-I/10: Eroded half of an egg.

ZPAL MgOv-I/25a, b: 2 polar parts of egg(s).

 

Locality: Hermiin Tsav (Khermeen Tsav), western Ömnögov (South Gobi), Mongolia.

Horizon: Red Beds.

Biostratigraphy:

Age: Late Cretaceous.

Material:

ZPAL MgOv-III/9: 2 polar parts of eggs.

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Protoceratopsid eggs with prominent ornamentation

SABATH, 1991

Locality: Nemegt, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-I/4: Several fragments of eggs.

 

Locality: Khulsan, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Barun Goyot Formation.

Biostratigraphy:

Age: Middle –Late Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous..

Material:

ZPAL MgOv-I/5-7, 8a-b, 9a-e, 10a, 12-13, 14a-b, 15a-d, 17, 20, 23-24, 26a-f: 40 eggs and egg fragments from several distorted nests.

 

Locality: Southeast Nemegt, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-I/27a-b: Numerous shell debris.

 

Locality: Bayan Zag (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-II/a-f: Poorly preserved remains of a nest (7 partially preserved eggs, numerous smaller figments and shell debris.

 

Locality: Bayan Zag, Main Field, (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-II/4, 5a-d, 8, 10, 19, 22: 20 eggs and egg parts.

 

 

Locality: Khashaat, Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-II./23: A nest of 19 eggs.

 

 

Locality: Bayan Zag, Green Sayr (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgOv-II/24: Numerous shell fragments.

 

 

Locality: Hermiin Tsav II (Khermeen TsavII), western Ömnögov (South Gobi), Mongolia.

Horizon: Red Beds.

Biostratigraphy:

Age Late Cretaceous.

Material:

ZPAL MgOv-III/1-8, 19: 8 fragmentary eggs and shell debris.

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CARPENTER & ALF, 1994/NESSOV & KAZNHSHKIN, 1986

Locality: Tash Kumyr, Kirghizia, Central Asia.

Horizon: Ialovachsk and Nichkesaisk series.

Biostratigraphy:

Age Turonian-Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Eggs and eggshells.

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MARYANSKA & OSMOLSKA, 1975

Locality: Bayan Zag (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Nests.