Beishan Quarry, Boluochi (Cretaceous of China)

Also known as Chaoyang

Where: Liaoning, China (41.4° N, 120.0° E: paleocoordinates 44.6° N, 120.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: 2 Member (Jiufotang Formation), Aptian (125.0 - 113.0 Ma)

• "Nearly all the specimens from this locality (Bolouchi) were collected from a layer... about 60 cm" (the exception is Eocathayornis walkeri). Xidagou Bed = 2nd Member of Fm.

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; gray, blue mudstone

• "bluish-grey mudstone"

Size class: macrofossils

Preservation: mold/impression, adpression

Collected by Z. Zhou in 1990; reposited in the IVPP

Collection methods: salvage, quarrying,

• Chaoyangia specimen from spoils pile of quarry

Primary reference: Z.-h. Zhou, F. Jin, and J.-y. Zhang. 1992. [Preliminary report on a Mesozoic bird from Liaoning, China]. Kexue Tongbao 1992(5):435-437 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 79517: authorized by Matthew Carrano, entered by Matthew Carrano on 11.03.2008, edited by Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

• Fish, invertebrates and plants reported by not described by Hou (1997)
Aves
 Ornithothoraces - Hongshanornithidae
Songlingornis linghensis n. gen. n. sp.1
Songlingornis linghensis n. gen. n. sp.1 Hou 1997 bird
IVPP V10913 (holotype) (partial postcranial skeleton)
 Ornithothoraces -
Chaoyangia beishanensis n. gen. n. sp.2
Chaoyangia beishanensis n. gen. n. sp.2 Hou and Zhang 1993 bird
IVPP V9934
 Cathayornithiformes - Cathayornithidae
Longchengornis sanyanensis n. gen. n. sp.1 Hou 1997 bird
IVPP 10530 (holotype)
 Enantiornithes -
"Cathayornis yandica n. gen. n. sp." = Cathayornis yandica, "Largirostrornis sexdentornis n. gen. n. sp." = Cathayornis yandica1
"Cathayornis yandica n. gen. n. sp." = Cathayornis yandica Zhou et al. 1992 bird
Hou (1997) states over 30 avian specimens from Boluochi, most of which belong to Cathayornis (pp. 2 and 68 of translation)
"Largirostrornis sexdentornis n. gen. n. sp." = Cathayornis yandica1 Zhou et al. 1992 bird
IVPP 10531 (holotype)
 Enantiornithes - Longipterygidae
Boluochia zhengi n. gen. n. sp.3
Boluochia zhengi n. gen. n. sp.3 Zhou 1995 bird
IVPP V9770
 Enantiornithes -
"Cathayornis caudatus n. sp." = Houornis caudatus1
"Cathayornis caudatus n. sp." = Houornis caudatus1 Hou 1997 bird
IVPP V10917(holotype), V10533, V10904