Genus: Osteolaemus COPE, 1860
Etymology: Greek, osteon, "bone" and Greek, laimos, "throat"; in reference to the extensive osteoderms on its neck and belly.
= Halcrosia GRAY, 1862
Etymology:
= Osteoblepharon SCHMIDT, 1919
Etymology:

Species: tetrapsis COPE, 1860 (Living)
Etymology: Greek, tetra, "four" and Greek, aspis, "shield"; referring to the cluster of four osteoderms (nuchal scales) on the back of it’s neck.
((West) African dwarf crocodile, Broad-snouted crocodile, Black crocodile, African caiman, Bony crocodile, African broad-nosed crocodile, Cocodrilo chico africano, Crocodile (à nuque) cuirassé, Crocodile nain (africain), Rough-backed crocodile, Crocodile à front (large), Stumpf krokodil (Stumpy crocodile), Bamba fiman)

Locality: Tropical West Africa.

= Crocodilus frontatus MURRAY, 1862
= Halcrosia frontata GRAY, 1862
Etymology:
= Halcrosia afzelii LILLJEBORG, 1867
Etymology:
= Halcrosia nigra GRAY, 1867
Etymology:

Referred material:

TELLES ANTUNES, 1962

Locality: Maiombe, Angola, Africa.

Horizon:

Biostratigraphy:

Age: Sub-fossil.

Material:

Number: Not given:

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Subspecies: tetrapsis tetrapsis COPE, 1860 (Living)
Etymology:

Locality: West Africa south of Sahara, including the northern and Western Congo.
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Subspecies: tetrapsis osborni (SCHMIDT, 1919) (Living)
Etymology:
= Osteobepharon tetrapsis osbornis SCHMIDT, 1919
= Osteolaemus osborni WERNER, 1933

Locality: Central Africa, North-eastern Congo.

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O. sp nova West SHIRLEY, VLIET, CARR & AUSTIN, 2013 (Living)
O. sp nova West SHIRLEY, VLIET, CARR & AUSTIN, 2013 (Living)