Locality 7, southwest Lachman Crags (Cretaceous of Antarctica)

Also known as D.8618, D.8621, DJ.377

Where: Antarctica (63.9° S, 57.9° W: paleocoordinates 61.7° S, 68.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Lachman Crags Member (Santa Marta Formation), Early/Lower Campanian (83.5 - 70.6 Ma)

• Early Campanian, on the basis of calcareous nannofossils, and consistent with ammonites (Guerra et al., 2015). Near the top of the section, just below the debris-covered slopes of the volcanic cap, are three prominent conglomerate beds, rich in crustacean remains; spot collections were also made in conglomerate exposures about 309 m below the base of the section.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified sandstone

• Deposited below storm wave base in mid to outer shelf depths

Size class: macrofossils

Reposited in the BMNH

• Repository: British Antarctic Survey, stored at BMNH

Primary reference: R. M. Feldmann, D. M. Tshudy, and M. R. A. Thomson. 1993. Late Cretaceous and Paleocene decapod crustaceans from James Ross Basin, Antarctic Peninsula. The Paleontological Society Memoir 28:1-41 [C. Schweitzer/E. Johnson/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 221282: authorized by Matthew Clapham, entered by Matthew Clapham on 22.07.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

 Decapoda - Nephropidae
Metanephrops rossensis Feldmann et al. 1993 clawed lobster
 Decapoda - Retrorsichelidae
Retrorsichela laevis Feldmann et al. 1993 decapod
 Decapoda - Necrocarcinidae
"Necrocarcinus wrighti" = Hadrocarcinus wrighti
"Necrocarcinus wrighti" = Hadrocarcinus wrighti Feldmann et al. 1993 crab
 Decapoda - Raninidae
Cristafrons praescientis Feldmann et al. 1993 crab
 Decapoda - Goniodromitidae
"Plagiophthalmous collinsi n. sp." = Plagiophthalmus
"Plagiophthalmous collinsi n. sp." = Plagiophthalmus crab