Contributions to Zoology, 72 (2-3) 153-155 (2003)

SPB Academic Publishing bv, The Hague

First record of Coleia Broderip (Crustacea, Decapoda, Coleiidae) from the

Upper Triassic of Japan

3 Hiroaki Karasawa Fumio Takahashi Doi³ &Hideo Ishida ¹, ², Eiji

1 2 Mizunami Fossil Museum, Yamanouchi, Akeyo, Mizunami, Gifu 509-6132, Japan: Mine City Museum of

3 History and Folklore, Omine, Mine, Yamaguchi 759-2292, Japan; c/o Mine City Museum of History and

Folklore, Omine, Mine, Yamaguchi 759-2292, Japan

Keywords:: Crustacea, Decapoda, Coleiidae, Coleia, Triassic, Japan

Abstract Results

We record the ofColeia Coleii- The Coleiidae discovery Broderip (Eryonoidea: comprises five genera, Coleia, Hel- dae) from the Nakatsuka Formation, Mine Group, Upper Trias- lerocaris van Straelen, Proeyon Beurlen, Pseudo- sic of Japan. The specimens were collected from shales exposed coleia Garassino & Teruzzi, and Tropifer Gould at Tsubuta, Sanyo-cho (YamaguchiPrefecture). Coleia co-occurs Garassino & Te- there with Halobia (Glaessner, 1969;.Duffm, 1978; fragments of a penaeoid, bivalves, spp., the ammonites, and plants. ruzzi, 1993; Schweigert, 2000). Hitherto, known

members of Coleia have been recorded from the

Lower and Upper Jurassic, and possibly Lower

Introduction Cretaceous. Two coleiid generahave previously been

known Upper Triassic strata, viz., Pseudocoleia from

In his review of Mesozoic decapods from Japan, the Norian-Rhaetianof Italy (Garassino & Teruzzi,

from Karasawa (2001) listed 22 species in 17 genera 1993; Garassino et ah, 1996) and Tropifer from

Lower Jurassic (Toarcian) to Upper Cretaceous the Rhaetian of England (Duffin, 1978). The dis-

Uncina of Coleia in Carnian of (Maastrichtian) deposits. Amongst these, covery sp. strata Japan

Uncinidae de- the oldest for the sp. (‘Uncinidea Beurlen’, Beurlen), represents record, not only genus

scribed from the Toarcian Toy ora Group in Yama- but also for the family.

guchi Prefecture by Karasawa (2002), is the oldest The Eryonoidea typically contain four families,

record in The of the note is Triassic-Lower Creta- Japan. purpose present Coleiidae, Eryonidae (Upper

to record the discovery of Coleia Broderip (Eryo- ceous), Polychelidae Wood-Mason(Middle Jurassic-

in noidea de Haan, Coleiidae van Straelen) the Recent), and Tetrachelidae Beurlen(Upper Triassic).

Nakatsuka Formation Trias- All the have been (Mine Group, Upper genera, excluding polychelids,

Ja- sic), deposited on the Akiyoshi Terrane (SW known from the western Tethyan realm. Fossil mem-

of pan). The specimens were collected from shales bers the Polychelidae have been recorded from

exposed at Tsubuta, Sanyo-cho (Yamaguchi Pre- the Middle-Upper Jurassic of Europe (Glaessner,

fecture). Coleia co-occurs there ‘with fragments of 1969), the Upper Jurassic of Antarctica (Aguirre-

a Halobia and the penaeoid, bivalves, spp., ammonites, and Urreta et ah, 1990), Lower Oligocene of

Plants. based North America Tokuyama (1962) indicated, upon western (Schweitzer & Feldmann,

that the of the Nakatsuka Formation bivalves, age 2001). Extant polychelids are cosmopolitan in dis-

Was i.e., Late Triassic. The of tribution (Galil, 2000). Carnian, presence Amongst eryonoid genera, the ammonite Trachyceras cf. desatoyense Johnston Rosenfeldia Garassino et ah, Pseudocoleia, Tetra-

ln this formation also shows that it to be of Early chela Reuss, and Tropifer are known from Upper Carnian date (Ishibashi ct ah, 1990). Triassic deposits. The recognition of Coleia from

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I. external - Fig. Coleia sp. 1 - MMHF3-00039 (Mine City Museum of History and Folklore), mould; 2 MMHF3-00042, internal - - mould; 3 MMHF3-00043, internal mould; 4 MMHF3-00041, external mould; 5 - MMHF3-00040, external mould. Scale bars equal 10 mm.

extends the known Japan greatly geographic range Acknowledgements for the Triassic Eryonoidea to the western end of the Panthalassic Ocean. We thank J.S.H. Collins (London), A. Garassino (Milano) and

G, Schweigert (Stuttgart) for supplying items of literature.

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