Table 5.

Taxonomic referral of specimens previously referred to Callophoca obscura. Anatomical abbreviations: DPC, deltopectoral crest; DT, deltoid tuberosity; LEC, lateral epicondylar crest; ME, medial epicondyle; OF, olecranon fossa; pos., posterior; prox., proximal; PT, pronator teres, RF, radial fossa.

specimen number	locality	revised referral	anatomical differences
IRSNB 1156-M177	Antwerp Basin	Mesotaria ambigua	N/A, lectotype
IRSNB 1116-M188	Antwerp Basin	Monachinae indet.	missing: prox. portion and DPC. Thick ME; extreme pos. elongation of LEC; RF and OF absent
IRSNB 301	Antwerp Basin	Monachinae indet.	thin ME; elongated and thin DPC; elongated pos. projecting LEC; RF and OF absent
USNM PAL 186944	Lee Creek Mine	Monachinae indet.	thick ME with angular profile; small LEC; enlarged DT; deep RF; deep OF
USNM PAL 263656	Lee Creek Mine	Monachinae indet.	thick ME with rounded profile; proximal PT origin; LEC not pos. projected; wide DPC; deep RF; deep OF